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Catamaran vs Monohull: Pros, Cons & Main Differences

By: B.J. Porter Editor

The choice of catamaran vs monohull ultimately comes down to preference. What’s critical for one buyer may mean little to another. If your partner refuses to set foot on a boat which heels, that’s a deal-breaker for a monohull. But if you’re passionate about classic looks and styling, your quest for beauty may override other considerations and rule out catamarans.

We can’t tell you whether a catamaran or a monohull is right for you. But we can help you with the pros and cons of each for your search.

The Strengths and Pros

No matter your choice of monohull or catamaran, there are safe, comfortable, and excellent sailing boats of both types. Neither has an exclusive lock on any strength, and both sail safely and comfortably. But there’s a different emphasis on how they do it. No matter what you are trying to do – sail fast, cruise the world, or just host a crowd at the dock, there are monohulls and catamarans that can work for any requirement.

Catamaran advantages

Space and comfort: Two hulls and a wide beam make a very stable platform with lots of volume in the saloon and cockpit. Most living space is above the waterline, with wonderful light and airflow. Cabins in the hulls offer better privacy and isolation, usually with standing headroom.

Straight line speed: Most catamarans are faster in straight-line sailing speed (1) that similar sized or even longer monohulls. Without a lead keel, they’re lighter, so more driving force from the sails converts to speed, and narrower hull forms may have less drag than wide hulls with deep keels. Some heavier cruising catamarans may not be faster, especially if they keep rig size small for ease of handling.

Stability : The beam of two hulls with a bridge deck leads to much higher stability and resistance to roll (2). Waves in an anchorage that induce violent roll in a monohull may make a catamaran bounce or bob. Under sail, catamarans do not heel appreciably even when powered up.

Twin engines. : With one engine in forward and balanced in reverse, most catamarans can spin in a circle in place and make sharp adjustments to the boat’s direction. If you have an engine failure, you also have a second engine, giving a safety edge when you can’t sail. 

Monohull advantages

Upwind sailing performance: While catamarans have the edge at straight-line speed, monohulls sail closer to the wind. When you’re racing or you have to sail upwind to get to the next island, this can get you there faster.

Sailing feel and responsiveness : The “feel” of sailing a monohull is much better. With a single hull, you’ll feel wind pressure and trim adjustments immediately for a more responsive helm and a better ability to sail to the wind.

Maneuvering under sail: Monohulls are quite nimble tacking and turning under sail, and there’s less risk of slow or missed tacks.

Righting Moment: The primary offshore safety argument for monohulls is their ability to right when capsized. The heavy keel keeps the boat deck up when sailing, and most monohulls will come back upright even after a complete capsize.

Cargo and Loading: A higher displacement boat with thousands of pounds of lead hung from the bottom isn’t going to be as affected by loading as a relatively light multihull.

Aesthetics: This is subjective, as many catamaran enthusiasts love how they look. Classic sailboat styling, with swept sleek looks, springy sheer lines, and all the “right” proportions are more common on monohulls.

Also read: The 5 Best Electric Anchor Winches

Weaknesses and Cons

Like strengths, weaknesses are relative; just because one class has a strength doesn’t mean the other doesn’t. There are spacious monohulls and beautiful catamarans, just like there are cramped catamarans and unattractive monohulls. The differences have to be highlighted relative to each other, and the weaknesses of one are most apparent compared to the strengths of the other.

Catamaran Cons

Upwind performance: Cats don’t sail as close to the wind, but they make up for it by sailing faster off the wind. You’ll sail a less direct course upwind. Even if you get in at the same time, you’ll have to sail farther.

Less responsive sailing: Two hulls with two rudders and a very broad platform reduce the helm feel when sailing, cutting responsiveness sailing in shifting wind and wave conditions. It also makes tacking slower.

No-flip zone: It is very difficult, but not impossible, to flip a large catamaran (3). But if a catamaran capsizes, it will not flip back over by itself.

Large in marina/close quarters: You have two problems in marinas. Beamy cats are tough to maneuver in tight spaces because they’re big and visibility is tough over the hulls. And many marinas charge extra because the wide beam extends into the next slip. The good news is that twin engines make tight maneuvering easier.

Price point: Catamarans are more difficult to build and need more materials. This is directly reflected in the cost of the boats.

Monohull Cons

They are heavier: Every large monohull needs a keel for stability (4). They can not sail or stay upright without thousands of pounds of ballast, and this makes them heavier and slows them down. Tiny monohulls can use a centerboard or daggerboard for stability, but most boats big enough to sleep on need ballast.

Darker interiors : Most monohull living space is lower in the boat, where you can’t put enormous windows for light and circulation. It’s very hard to get space as bright and airy as catamaran saloons.

Less living space: With one hull and no bridge deck saloon, most monohulls feel cramped compared to spacious catamarans.

More prone to rolling motions : Only one hull makes monohulls susceptible to rolling in waves, and the movement can be quite uncomfortable.

Heeling: Tipping is just part of sailing monohulls upwind and is unavoidable. It can be reduced on some other points of sail, but not eliminated. Many people, especially non-sailors and new sailors, find this movement uncomfortable or distressing.

You might also be interested in: How to Buff a Boat | A Detailed Guide by a Boating Expert

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Catamaran Or Monohull? 27 Important Facts (Explained)

Catamarans and monohull boats are two very different kinds of vessels.  Each craft offers distinct advantages and disadvantages that you’ll want to consider before choosing between the two.

In this post, we’ll go over some of the important things to consider when choosing between catamarans and monohull boats:

Table of Contents

Cost & Availability

Both catamarans and monohull boats come in small recreational sailing versions, larger motorboat versions, and larger sailing models.  In all cases, the catamarans will cost more and will be harder to find.

The reason catamarans are harder to find because there are not as many of them, and they’re mostly made overseas.

Also, there aren’t as many catamaran manufacturers, so sailors have fewer options when buying them.

On top of this, catamarans have only recently become popular in the United States and other areas of the developed world.  This means the used market for boats doesn’t have as many catamarans on it.  You might find that you have fewer options when making a used catamaran purchase, which could bring costs up to a premium.

Two Times The Fun with Catamarans

Another reason that catamarans are more expensive than monohulls is the fact that catamaran buyers have to purchase two hulls, two engines, and two of all of the components that help make an engine work.

Traditional sailboats and large powerboats with one engine don’t have this cost issue.

On top of this, a catamaran is much wider than a monohull, and thus you have more space to build and equip.

On the other hand, once you’ve purchased the boat, you do get to enjoy the benefits of having two of everything.  We’ll talk about the advantages of this further down in this post.

Maintenance Cost Makes A Difference

The maintenance on a catamaran is also more expensive than the maintenance on a monohull boat.  This goes back to the fact that there is twice as much of everything to maintain.

Catamaran owners will need to do preventative maintenance on two different engines, and they’ll have two hulls and a large deck area to clean and maintain as well.  If they’re getting the bottom of the boat treated, they’ll have to do this twice (once for each hull).

Even the interior components can usually be found twice.

Each cabin will usually have a head in it, so you’ll have at least two toilets and sinks to maintain, which obviously has its plusses and minuses.

One positive aspect of this is that catamaran owners do have the option of deferring some of their maintenance.  For example, if one head is no longer functioning properly, you always have the second one that you can use.

It also adds a bit of safety as well.

This is because while the catamaran does have two engines to maintain, the owner does have power even if one of the engines happens to go down.

Some catamaran owners also like to point out that maintenance may not have to be done as frequently.  This is because the engines don’t have to work quite as hard, and other items like additional bathrooms and sinks might only be used half as much.

How Much Space Do You Need?

A catamaran has more space than a monohull.  This is because the boat is wider, and it has a much larger deck area.  It also has twice as many hulls, so you have more overall space between the two of them.

The additional space is great for people looking to throw parties on their boats.

Most boat owners would agree that the catamaran is usually the party boat of choice at the docks.

Even if you aren’t into throwing parties, the extra space can still be nice for relaxing on the deck or getting a suntan.  The wide-open space also makes it easy to use the boat as a fishing platform.

Additionally, you have more space for stuff like surfboards, rafts, and other items that can easily clutter up the deck of a monohull.  Even fishing can be easier from a catamaran as the deck provides plenty of space between different anglers.

Catamaran owners also have additional space for carrying fresh water and adding generators and solar panels.

Interior space is generally more plentiful on a catamaran, and luxury catamarans have an easier time fitting large items like washers and dryers inside of them.  You can have these on larger monohulls as well, but it will be harder to make them fit than it is in a catamaran.

On the other hand, all of the additional space means the catamaran owner has more space to maintain and clean.  Also, all of the additional items that can be brought onto the boat will make it heavier.  A heavier boat will use more fuel, and it will travel more slowly.

Living Quarters Vary Between The Two

The living quarters on a catamaran are much different than they are on a monohull.  Most people would agree that the berths in a monohull are much more spacious than in a catamaran.

A monohull offers people the opportunity to have a large bed with space on either side to walk around it.  This is great for couples who want to get out of bed without waking up their partner.

Catamarans, on the other hand, have the advantage of being able to offer large above-deck salon areas.  The galleys, the dining areas, and the living areas can all be above-deck, while the two hulls can provide heads and berths.

Some boat owners say that living in a monohull is akin to living in a basement apartment .  Other boat owners prefer the monohull because it brings them closer to the water and gives them the feeling of being at sea.

Privacy Can Be Prioritized On Catamarans

A catamaran offers up many different living areas that people can take advantage of.  For example, each hull will typically have its own bathroom and bedroom.

This gives each sleeping area complete privacy from the other.

The living quarters are usually up on the deck, so early risers can wake up and move to these quarters without waking up the others.

The same holds for night owls.  A night owl can stay up late without bothering the people who want to retire to their beds earlier.

With two hulls, large catamaran owners can hire a crew and give them their own hull to live in so that there is separation between the cruisers and the crew.  This is a wonderful advantage for honeymooners looking to have their own space.

The downside to all of this, of course, is that sometimes a family may not want the additional privacy.  For example, a family with small children might not want their children in a different hull than they are.

Additionally, the extra privacy can make it hard for people on the boat to communicate.  This could become a big problem in the event of an emergency.

For this reason, it is often recommended that each hull have a radio in it so that the occupants can quickly communicate with each other.  Remember, even in inland areas, cell phone reception may not be very good inside the boat hulls.

Recreation In a Monohull vs. a Catamaran

Most sailors agree that sailing a monohull boat is much more exhilarating than sailing a catamaran.  Traditional sailboats heel, and sailors get instant feedback while they’re sailing.  For the most part, catamarans stay stable, and you don’t get the same feeling with the movement of the wind and the water.

When it comes to monohull powerboats, you have the advantage of being able to pull water skiers, kneeboarders, and tubers with ease, as long as the boat has the power and a planing hull.  A power catamaran usually doesn’t have the speed or maneuverability to pull off these recreational opportunities because they are displacement hull designs.

Catamarans excel in more leisurely recreational activities.  A catamaran makes a great party deck as well as a great cruising deck.  Catamaran owners can comfortably walk around a catamaran without having to worry that the boat might knock them over the next time it decides to heel.  This allows boaters to sit and talk with one another comfortably.

A catamaran can also be used as a beaching vessel.  This makes it a great platform for people looking to go swimming or fishing around sand bars and other shallow water areas.  It also makes it a great boat for sailors looking to sail a larger boat on a river or lake known for having shallow areas.

Swimming and Diving

Swimming and diving off of a catamaran are usually much easier than doing the same from a monohull.  The wide stance of the two hulls offers boat designers the option to put in staircases at the back of both hulls.

In between these staircases, some boats will have an additional diving platform and/or a dedicated frame for pieces of equipment and dinghy storage.  This makes catamarans great for swimmers, snorkelers, and divers.

On the other hand, modern monohull sailboats can also have good transom stairs for easy access to the dinghy and swimming.  Both types of boats can easily travel far out to sea, giving boaters the option of diving in areas that can’t be accessed from beaches and developed areas.

Boat Draft In Shallow Waters

For the uninitiated, the boat’s draft refers to how deep the boat’s hull sits within the water.

A monohull typically sits deep within the water, while a catamaran sits much higher on the water.  This is why we stated that a catamaran is good for shallow waters.

The advantage of having a boat that can go into shallow waters isn’t restricted to just recreational activities like swimming and fishing.  A boat that can go into shallow water is safer to operate in areas where a boat with a deeper draft might become damaged.

Additionally, a catamaran has more stability on calm waters.  This helps make a catamaran more comfortable to relax or sleep on while at anchor or the dock.

The deeper draft of a monohull boat has its advantages as well.  A deeper draft provides more stability in rough waters and allows a boat to go further into the sea.

For this reason, many coastal cruisers will prefer catamarans, while many ocean voyagers will prefer monohull boats.  In fact, some areas of the Caribbean and the Florida Keys can be off-limits to boats with deep drafts as it simply isn’t safe for the boat to navigate these waters.

This isn’t to say that you can’t navigate these waters in a monohull boat, but you will have to be cautious depending on how deep your monohull’s boat draft is.  You wouldn’t have this issue in a catamaran.

Stability On The Sea

A catamaran offers a lot more stability in shallow waters, in calm waters, at the dock, and anchorage.  This makes the boat great for cruising and for relaxing in port.

A monohull offers a lot more stability in rough waters.

This makes this boat great for heading out to sea and for navigating vast distances.

Safety Issues To Consider

Both catamarans and monohulls can be built to navigate the waters they were made for safely.  This will be determined more by the boat’s category designation rather than the type of boat.

However, each boat deals with unsafe situations in different ways.  For instance, a monohull boat is likely to right itself if it is capsized.

This means that even in rough seas, you’re unlikely to find yourself permanently capsized.

The downside to this is that should you become completely swamped from a capsize in a monohull boat, you are much more likely to sink.  In fact, if there is a hull breach on a monohull boat, your boat could sink.

Catamarans are said to be unsinkable.  This isn’t completely true, but it is very unlikely that a catamaran will sink.  Even if a hull is breached, you still have a second hull to keep the catamaran afloat.

However, a catamaran can’t right itself.  If you capsize your catamaran, it will stay capsized.

One other safety concern to consider is that a monohull sailboat will heel while a catamaran will not.  This increases the chances that someone could fall off the boat or onto the deck in a monohull boat.

Catamarans Are Faster Than Monohull Boats

A catamaran is faster than the average monohull boat.

This is because they face less water resistance, and their narrow hulls don’t have to deal with their own bow waves as a monohull does.

Of course, catamarans aren’t always faster.  Old cruising catamarans may not go faster than 8 knots, and modern monohulls can exceed 10 knots.

Monohull boats tend to sail downwind and in choppy seas better than catamarans.  This gives them a speed advantage during ocean voyages.

We have a separate post with complete average speeds per type of catemaran . It’s a must read if you are at all concerned about speed!

Fuel Consumption Considerations

Catamarans have two engines to burn fuel, which can drive up fuel costs.

However, a catamaran is lighter on the water, so it usually takes less energy to move a catamaran.  This means you’ll end up using less fuel in a catamaran than you would in a monohull.

On top of this, catamarans can decide to use just one engine in low wind areas.  This further decreases the amount of fuel that a catamaran consumes.

These rules only apply to calm waters.

A monohull navigates waters with high waves and strong winds much more efficiently than a catamaran.  In this case, you’ll use less fuel in a monohull than you would in a catamaran.

Sailing Differences To Notice

Sailing a monohull boat can be exhilarating.  These boats can glide through choppy waters, and you get to feel the motion of the boat as the sea rushes by the cockpit and the wind causes you to heel.

This type of sailing also provides instant feedback as you’ll know what you need to do with the sails as you’ll feel what is going on through the boat’s motion.

Sailors all over the world have been using monohull sailboats for years, and you’ll find plenty of outlets for recreational sailing with a monohull sailboat.

Sailing catamarans do not heel like a monohull sailboat.

These boats, therefore, do not provide the sailor with instant feedback.  Also, if you incorrectly sail a catamaran, you do risk capsizing the boat more easily.

Training Can Be Quite Hard

Sailing a catamaran and sailing a monohull boat are two different experiences.  People looking to sail either should probably get professional training.

Obtaining this training will always be easier with a monohull boat.

This is because monohulls are more popular, so you’ll have more instructors available to you.

Do You (Or Your Friends) Get Seasick?

People who are prone to getting seasick easily might want to consider a catamaran.  A catamaran provides much more stability in calm waters, and you get a lot less movement.

On the other hand, people who are not prone to getting seasick might prefer a monohull in choppy waters.

This is because a monohull will deal with deep and choppy waters with high waves much better than a catamaran will.

As a result, a catamarans movement can seem extreme under these types of conditions.  People who have never gotten seasick before can end up sick under these conditions.

Here’s a separate article we wrote with everything you should know about seasickness on Catamarans . There are some things you can do and some things you should know!

Docking Is (Usually) Easier With A Monohull Boat

Docking a catamaran can be a difficult endeavor.

This is because catamarans are often too wide to be docked within the slips located in central areas of a marina.

Because of this, they need to be docked at the end of the dock.  This leaves them with fewer spots to dock.  It also makes docking more expensive.

Catamaran owners traveling through areas that are unlikely to have many catamarans in them may find it difficult to find a dock at all.  This is true in areas of the northern Atlantic where monohulls are much more popular than catamarans.

Storage Issues To Consider

Even storing a catamaran can be more difficult.  This is because storage facilities often do not have the equipment to get a catamaran out of the water.

The wide width of these boats requires special lifts, and not all boat marinas will have them.

Storage facilities that do get the catamaran out of the water will often charge more money for it.  They’ll charge additional fees for taking the catamaran out of the water, and they’ll charge additional fees for the actual storage of the boat as well.

Redundancy And Backup Equipment

We touched upon this earlier, but it is worth repeating that catamarans have many redundancy built into them.  This can be a big advantage when it comes to safety.

For example, if one rudder becomes inoperable, the boat can still be steered with the other one.  If one engine becomes inoperable, the boat can still be driven with the other one.

In extreme cases, a hull could become damaged, and you could still stay afloat because the other hull will keep the boat safely above water.  These safety advantages can save lives and keep people from becoming stranded out at sea.

The primary downside is the maintenance issue that we mentioned earlier.  All of these redundant components will need to be maintained.  As a result, maintenance costs will be close to twice as expensive in a catamaran.

Cooking Is Easier On Catamarans

Cooking on a catamaran is usually easier than it is on a monohull.  The main reason for this is that a catamaran doesn’t heel like a monohull, so you don’t have to worry as much about things falling over.

This not only makes cooking easier, but it makes cooking safer as well.

Additionally, catamaran galleys tend to have more space in them to move around.  Also, they are often up on the deck, so you don’t have to climb in and out of the hull with your dinner in hand.

Dinghy Storage

Monohulls and catamarans can both hold dinghies.  The larger the boat, the larger the dinghy can be.

However, catamarans have a wide area at the rear of the boat that is perfect for holding dinghies.

This makes getting in and out of the dinghy easier.  Also, people can often have larger dinghies on their catamarans because the boat’s stern is so accommodating.

Power Generation Is Easy On A Catamaran

A catamaran has a lot of space for solar panels and wind turbines.  Rigid panels can be placed in areas that won’t be walked on, like overtop of the bimini, and flexible panels can be placed in areas where the panels might end up getting stepped on.

The width of a catamaran even gives them more opportunities to put hydro generators into the water.

This means catamarans can generate more power than the average monohull boat can generate.

On the other hand, a monohull usually has less powered items to worry about.  Monohulls need less power to operate at full capacity, so you may not need all of the additional space for generating power.

Ventilation Issues To Think About

Some people feel that monohull boats don’t offer enough ventilation.  This is especially true in warmer areas of the world.

Catamarans also lack ventilation within their hulls, but fortunately for them, much of the living space is located up on deck.  This gives catamarans an edge when it comes to cruising in warm weather.

On the other hand, monohull owners aren’t exposed to the cold winds that you might find up on deck in harsher climates. 

This lack of airflow may actually be of benefit in this instance.

Some people find monohulls to be better looking than catamarans and vice versa.

This all comes down to personal preference, so you’ll have to decide for yourself which type of boat has the advantage in this case.

Some people think catamarans are the most elegant thing in the world while others prefer monohull boats as they look more classic.

Resale Value Is An Important Factor

If you read our extensive guide to boat depreciation per boat type , you know that no matter what boat you buy, it will always go down in value.  This is just a sad fact of boat ownership that people need to consider before buying a boat.

Many factors go into how much you’ll be able to get for your boat when you resell it.  These factors are the condition of the boat, the age of the boat, and the economy in general.  For example, people are less likely to want to buy boats during a recession.  This is especially true when it comes to smaller boats.

However, one additional factor that catamaran owners need to consider when thinking about resale value is the value of the dollar. 

People from the United States don’t have many American catamarans to choose from and will usually need to buy these overseas.

This means that a catamaran will be less expensive to buy when the dollar is strong compared to the Euro and more expensive to buy when the dollar is weaker in comparison.  This will affect the used market as well because higher values on new catamarans can help to bring up the value on the used market.

With a monohull boat, you may not have to consider situations like this as there are makers of monohull boats all over the world.

Don’t Let The Length Trick You!

One thought to keep in mind when comparing monohull boats and catamarans is that their different shapes account for different space advantages.

For example, a 40-foot long catamaran will have much more cubic space than a 40-foot long monohull.

Because of this, when comparing boats, you should look at the cubic space rather than the length. In this case, you may be comparing a 48-foot long monohull with a 40-foot long catamaran.

When you compare the two types of boats in this manner, the price differences aren’t quite as large, and the comparison is fairer.  It also may make the operating and maintenance costs more similar.

This is an important distinction to make because the length of the boats can trick you!

Consider Trying Both (Before Buying)

Boats can be an expensive purchase, so it makes sense to try them out before you decide to make your purchase.

Rent each type of boat and use it on the types of waters that you intend to cruise on the most.

Try the boat out in different weather conditions as well, and don’t be afraid to do multiple rentals before you make your final choice.  The time and money invested into making sure you get the boat you really want will be more than worth it in the end.

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Catamaran vs. Monohull: We Changed, Should You?

There are two schools of thought when it comes to monohull versus catamaran . We have done extensive cruising and lived aboard two monohulls and four catamarans over the past 25+ years . We experienced the good and the bad for both single hull and multihulls first hand. Quite honestly, the pluses for catamarans far outweigh the minuses. There are multiple benefits of catamarans. They are faster, more stable and spacious, and have shallower drafts allowing safer anchorage closer to shore. Being on a stable platform with no heeling cuts down on crew fatigue and seasickness leaving the crew more alert and in control of the vessel. Even novice sailors feel more confident on catamarans.

When we built our monohull Royal Salute in the early 90s, catamarans were not established and were looked upon with extreme suspicion by most cruisers, including ourselves. “Safety and the capsize” issue were always the first things to come up against sailing catamarans. It is a fact that monohulls can get rolled in heavy seas but will right themselves because of the heavy lead keel, and while crew and vessel will be battered, the roll is survivable.

However a catamaran once capsized, will remain upside down (jokingly referring to this state of the catamaran as “reaching its most stable position when upside down”). The inability of a catamaran to self-right was and still is a major bone of contention. However, what is not often discussed is that a monohull has about a 5,000 pound keel of lead that is constantly trying to drag the boat to the bottom of the ocean versus a catamaran that has no ballast and is in most cases with modern catamarans, unsinkable.

So the options are to either sail the world on a boat that, if it springs a leak, will sink like a stone or a vessel that cannot self-right in the event of a capsize but will not sink no matter what. So from a practical point of view, here are our observations over the last 25+ years of living aboard, on the advantages and disadvantages of a catamaran.

ADVANTAGES OF A CATAMARAN

1. speed equals safety.

The speed of a catamaran makes it possible to outrun bad weather. While catamarans do not point as high into the wind as a monohull (or if it does, it makes more leeway or slides sideways), it is about 20% faster than a monohull. This means that even if you sail upwind at a slightly wider angle to the wind than a monohull and have to cover more distance, you will still arrive at your destination long before a monohull.

A modern performance catamaran with daggerboards and good quality sails will point as high as a similar sized monohull. It will point the same as a comparable monohull and sail much faster and therefore arrive at an upwind position much sooner than a the monohull. It is important to note that most of the production catamarans on the market are under-powered and are equipped with standard smaller sails. In lighter breezes many of these designs perform poorly unless fitted with bigger headsails, a Code Zero and a square-top mainsail.

While we believe that more comfortable and safer in rough weather , we have to concede that when the weather gets really bad (60 knots of wind or more) we would personally prefer to be on a monohull from the standpoint of surviving. I would say that a monohull is preferable for serious offshore single-handed sailing because you can more easily hove-to in a monohull. We have been in some extreme weather on a number of catamarans and never really felt that we were in danger, although it takes some nifty seamanship.

A monohull could capsize in extreme weather or even roll in a storm, but they generally come back upright. A catamaran on the other hand, will not right itself. But the cat will generally stay afloat, offering a good place to survive while you wait out the storm or until help comes along. Well-designed modern catamarans are very hard to capsize though.

Having said all that, most catamarans can do 200 to 250 miles a day and with modern technology allowing one to pull down weather at will, there is no good reason why you should get caught in extreme weather. A faster boat is a safer boat as it will in many cases be able to outrun bad weather. With good weather routing information a catamaran can avoid most serious weather and, at worst, place itself in the most favorable position to avoid the brunt of a storm.

2. A Catamaran is a Stable, Safe Platform Underway

Catamarans have no ballast in the keels like monohulls do and therefor it relies on beam and buoyancy for stability. Typically cruising catamarans will have a beam to length ratio of roughly 50%, although many designs nowadays exceed the 50% rule of thumb. So, a 45-ft long catamaran will be about 22-ft wide, providing a very stable platform when sailing. Unlike catamarans, monohulls cannot overcome the rolling and pitching with their narrow beam and the lead ballast for stability.

This rolling and pitching makes the deck on a monohull very unsafe whereas on walking around on the deck of a catamaran while underway is far easier since the boat is much more stable, and it doesn’t heel. This makes sail changes and reefing much easier and a lot safer for the crew. Without the rolling and pitching motion, the danger of falling overboard on a catamaran is considerably less than on a monohull.

3. Crew Fatigue Reduces on a Catamaran

Because a catamaran does not heel over like a monohull, it offers far more comfort underway because the motion is mostly fore and aft pitching and very little beam-to-beam rolling. On all points of sail, a catamaran tracks upright and significantly reduces crew fatigue and seasickness. Seasickness is usually caused by things like anxiety, fatigue, hunger and cold, which all add to a sense of disorientation. This leads the crew to making bad decisions and seamanship errors that could be fatal to the crew and vessel. The more stable platform of the catamaran will hugely keep those issues at bay, making the crew more alert and energized.

Every action and chore including cooking is much easier on a catamaran when underway. It is much more pleasant to be on the deck level looking out rather than being stuck “down below.” It is also much nicer to sleep on a boat that doesn’t heel. I remember nights at sea in our monohull when I was rolling around in my bunk unless I was properly wedge in a little corner. That is simply not the case on catamarans.

All these factors ensure that your crew will not expend unnecessary energy to simply try and stay upright, onboard and safe on a long passage. Your crew on a catamaran will be well rested and alert and will be able to function well if a stressful situation arises.

4. Comfort at Anchor

Catamarans provide a wide platform and therefore offer lovely spaces to relax at anchor without the rolling motion that monohulls have a tendency to do in a swell. During our 15 years of cruising on a monohull, we have often had to leave anchorages that we really were not finished exploring because of a rolly, uncomfortable anchorage. Big rollers or swells coming into an anchorage can make conditions in an anchorage very uncomfortable and unsafe.

We were anchored off Funchal on the island of Madeira in our monohull Royal Salute once, when we were forced to leave our anchorage. The rolling became so bad, we were rolling from gunnel to gunnel. The anchorage became untenable to remain anchored, forcing us to go out to sea in foul weather in the middle of the night. This is an extreme case but believe me, we have left many an idyllic anchorage because of a rolling swell into the anchorage. Catamarans, on the other hand, do not roll from like monohulls have a tendency to do and are far more comfortable at anchor.

5. Anchor Bridal Setup

Catamarans are fitted with a bridle, attached to both bows and down to the anchor chain, resulting in a very stable position at anchor. What we found with our monohull was that because the bow acts as a sail (because of the high freeboard), the boat tended to sail at anchor in high winds. It sailed in one direction until the chain snatched and tacked over and sailed in the other direction, feeling like it might dislodge the anchor altogether. The catamaran on the other hand sits at anchor a lot more stable and doesn’t sail around as much.

6. Ease of Boarding on a Catamaran

Thank goodness we were much younger and more agile during our monohull days. Royal Salute and most monohulls of her generation or older, have high free-boards, making it quite a feat to get onto the boat from the dinghy. It was one of the most challenging things to do because unlike the more modern monohulls that have a scoop at the back, we had to climb up on the side of the boat to get on and off. We, of course rigged steps, etc. but it was always a hassle compared to the ease of getting on and off a catamaran from a dingy or from the water.

7. Shallow Draft Equals Better Anchorages

Catamarans have significantly shallower drafts than monohulls, allowing for safer anchorages closer to shore. Most catamarans in the 40-ft to 50-ft range draw between 3-ft to 4.5-ft, so they can anchor in places that a monohulls can not even consider. In the shallow waters of the Bahamas for example, the catamarans have a big advantage. We often anchor our own catamaran just a few feet away from a beach. It definitely allows one to be able to explore areas where the water is shallow without the fear of running aground.

The shallow draft also allows for emergency repairs in shallow water and even doing the bottom job when the tide goes out as we have done in places like Mtwapa Creek in Kenya, East Africa. The catamaran easily rests on her keels on the sand without help making it a breeze to do the “annual haul out” even in remote locations.

8. Dinghy Davits & Dinghy Size

All catamarans have a set of davits that make it very easy to raise and lower the dingy. Our monohull and most cruising monohulls do not have an efficient or easily accessible set of davits. This makes raising and lowering the dingy an elaborate production. Catamarans on the other hand, has davits systems easily accessible and some even have platforms to rest the dinghy on.

The lack of beam and difficulty of lifting the dinghy also limits the size and type of dingy that one can reasonably carry on a monohull. As we all know, the dingy is your transport to and from shore and diving or fishing spots, so the bigger and faster the dingy, the better off you are. A catamaran can carry both a heavier and bigger dinghy which makes the popular center consul dinghy so much more possible.

9. Interior Space and Comfort on a Catamaran

We sailed 32,000 NM on our 45-ft monohull, happy as clams, not realizing that sailing does not have to be done lying on your ear 24/7 while on passage or sitting knee-to-knee in the cockpit at anchor with your two other guests at the dinner table! One can liken sitting in a monohull cockpit to sitting in an empty Jacuzzi, you are always nice and close to the other folks.

Now that we are on our fourth catamaran, there are a few things that have become more evident to us than the incredible space and comfort of a catamaran, not only at anchor but also underway. The cockpit and living space in general are huge compared to a monohull, making for very comfortable and spacious living conditions. It feels more like you are at home, rather than just on a camping trip.

Knowing that one spends at least 90% of one’s cruising life at anchor, it’s important to have good open living space, which most modern cats nowadays offer. A lot of cats have walk around beds, lots of storage, every modern appliance including washer/dryer, etc. However, one has to fight the urge to fill the space if you want to keep the cat light and fast.

Sailing with guests onboard for extended periods of time, in close quarters can become claustrophobic but on a catamaran people are spread out and separated. With guests sleeping in one hull and the owners in another, catamarans offer much more privacy and separation. Some cats even have privacy doors that will close off the entire hull and has a separate entrance onto the deck, which really separates you from the guests completely.

There is very little heeling on a catamaran, so there is no need for hand grips and safety harnesses inside the boat. There is nothing better (and safer) than being able to walk from the cockpit into the living room (saloon) on one level or one step down at most. In a monohull, when heeling at a severe angle, you would have to claw your way from the companionway steps down to the living area, while fighting to stay upright, significantly tapping your energy.

Unless you hit extreme conditions, everything stays put on a catamaran reducing the anxiety before doing passages of having to stow and secure everything. This very issue makes a lot of cruisers reluctant to weigh anchor and explore more often. It is just too much effort to pack away all your stuff once comfortable in an anchorage!

One thing you will notice is that the stove on catamarans are not gimbaled like it is on monohulls and this should tell the story in itself. The stability and comfort on a catamaran is far superior. Cooking is easy and safer. I often open a nice cold beer, put it down to do something and forget about it only to find a warm beer later in the same place I left it. This is not something that happens on a monohull.     

10. Redundancy on a Catamaran

Unlike monohulls, catamarans have a lot of critical redundancies. That of course means two hulls to clean and anti-foul, double the engine maintenance, etc. but having two of the critical equipment like engines for instance, outweighs the downside.

With two engines, if one fails you still have adequate propulsion to go anywhere. If by some fluke the second engine also fails, you have a full set of spares to fix at least one of them. Our friends once hit a sleeping whale off Tanzania, and when it dove, it hit the prop, bending it. They limped into the narrow channel on the one engine but at least they could make it to a safe harbor where we surveyed and repaired their damage.

We often only use one engine when motoring while making passage in order to conserve our fuel. The one engine is totally capable of moving the boat along at a good speed unless you are in heavy seas and you may need more power. Other than that we only use two engines to dock or maneuver the boat in close quarters.

Because there are two engines there are also two independent charging systems via the alternator on each engine. If one alternator goes out, there is still another complete charging system. There are two rudders and if one fails or falls off (as has happened to our friends on a monohull off Columbia, where they almost lost their boat) you have a second rudder that is completely capable of steering the boat by itself indefinitely. That holds true for several things on a catamaran!     

11. Maneuverability

The engines are spaced far apart on a catamaran and it makes maneuvering much easier and more precise than monohulls, unless the monohull has a bow thruster. We did not have a bow thruster (not many monohulls do) and had to rely on prop-walk and using prop wash on the rudder. A modern catamaran can do a 360 turn on her own axis. A monohull cannot do this and have a bigger turning circle. However, a monohull under sail is much more maneuverable and certainly will tack a lot faster than a catamaran. The ease in maneuverability under engine on a catamaran in close quarters specifically, is vastly superior comparatively.

12. Rigging

Because of the beam on a catamaran the spinnaker pole has become unnecessary equipment. Hallelujah, I say. That pole on our monohull was a pain the behind and I always hated having to use it. On a catamaran, one can fly an asymmetrical cruising chute or spinnaker, using the bows to tack the clew or run a guy through a block so it is very much simplified, easier and safer.We also sail wing-on-wing with twin headsails when we sail downwind. We use our furling jib and furling Code Zero. It is as easy as one, two, three.

DISADVANTAGES OF A CATAMARAN

1. bridgedeck slamming.

One advantage most monohulls do have when underway is that they don’t slam. Catamarans with a low bridgedeck clearance can experience significant slamming in confused seas sailing upwind. This slamming can be quite disconcerting when you first experience it as we did on a Shuttleworth 44 design, our first ever catamaran experience, 20+ years ago. At times, it felt as though the boat was falling apart. Of course the boat was fine but nevertheless, the stress on the crew from the constant noise and discomfort was significant.

Monohulls don’t have a bridgedeck which means no slamming and are therefore a bit more comfortable than l ow bridgedeck catamarans when beating into severe confused conditions or “washing machine” conditions as we call it. Modern catamarans mostly have better bridgedeck clearance and the slamming is significantly less. However, not all cats have a good clear tunnel under the bridgedeck. Some manufacturers build beds into the bridge deck in order to make more space in the chest of the catamaran where the slamming occurs. These protuberances into the bridgedeck tunnel will likely increase slamming. So be mindful of that when selecting a catamaran. We currently own a Bali 5.4 and the bridgedeck clearance on this boat is more than adequate and the tunnel is clear. We therefor experience very little slamming compared to our Prout 45 that we previously owned (picture of sister ship below) with a much lower bridgedeck.

We Explain Bridgedeck Clearance

In the pictures below, the Bali 5.4 has very good clearance from the water to the bridgedeck and has a nice clean tunnel versus the very low bridgedeck of the Sunreef 50. 

2. Sailing Downwind

Monohull spreaders are set at 90 degrees to the mast whereas a catamaran has to have backswept spreaders. The reason is that, on a monohull, there is a backstay and using this, plus the intermediates you can get a nice pre-bend in the mast (the pre-bend is to flatten out the main sail and allow for better performance).

On a catamaran with no back stay, you need to use the back swept spreaders and the diamonds to pre-bend the mast. The reason I point this out is because on a catamaran, if you want to broad reach or run, the mainsail cannot be let out all the way because the backswept spreader tips could punch holes in the fabric.

On a monohull, the spreaders are at 90 degrees so you can let the main and the boom out much further which is, of course, much more effective. This is one of the reasons it is better to broad reach and tack downwind on a catamaran.

Whether a monohull or multihull, sailing dead downwind doesn’t usually make great VMG. Therefor a regular cruising cat, much like a monohull, needs a lot of sail area and has to sail deep downwind if it is to achieve a decent speed made good (VMG). This video demonstrates how we achieve this by sailing wing-on-wing downwind.

It is more difficult to find a dock either as a transient or a permanent slip for a catamaran in general because of the wide beam. But this is changing fast and will soon not be too much of an issue. In the USA dockage is charged by the length of the boat in feet, so there is no disadvantage there but, in some places, (the Mediterranean for example), dockage is charged at length times one and a half because of the additional beam.

Since the catamaran is stable at anchor, we mostly anchor out. We have more privacy, a better breeze and usually a stunning view.We have a nice dinghy with a good outboard engine and is big and comfortable enough to get to shore fast and together with the modern conveniences like the generator, watermaker and washer/dryer, docking becomes a non-issue.

It is definitely more difficult to find a travel lift with enough beam for a catamaran for a haulout, while, for a monohull, there are absolutely no problems anywhere. The wide beam of cats also greatly limits the number of shipyards that can haul them out. Most catamarans over 40-ft must be hauled out with a 50-ton travel lift. This not only increases the cost of the haulout, but greatly limits the choice of the shipyards for repairs and maintenance. With limited choice, prices are high for shipyard services.

Catamarans do tend to have a lot more windage than monohulls. This can be an issue especially when maneuvering in close quarters with a strong wind. But I have found that, provided the engines are powerful enough for the size of catamaran, that twin engines negate this problem. Also, many modern large catamarans now have a bow thruster fitted. It is super easy to dock.

The cost of getting into a catamaran is much higher than that of monohulls. That could put a serious dent in your cruising kitty or require you to put your dream on hold a little longer. Pre-owned monohulls on the other hand are very cheap to buy comparatively, because the supply presently far outweighs the demand.

Catamarans are in high demand and they typically hold their value much better and longer and the trend is now heavily in favor of the catamaran market. When prospective buyers contact us for catamarans under $250,000 the choices are very limited and catamarans under $100,000 is near impossible to buy. In this case, your best bet is to go with a monohull unless you go with much older boats like the Prouts or the less expensive Geminis.

Our Own Catamarans & Monohulls

FYI: Royal Salute , a Bruce Roberts 45 monohull, was the first boat we owned and sailed approx. 30,000NM on. Mythral, a Seafarer 30, was our “toy boat” while we were waiting for our catamaran to be built. Even though this classic little monohull sailed around the world, it didn’t have much in modern conveniences like running water. Siyaya was an Island Spirit 40 catamaran that we sailed from Cape Town to Florida on and then taught live-aboard sailing classes for several years. Zuri I was a Prout 45, a beautifully crafted catamaran but by today’s standards is considered old technology. Our Lagoon 450 SporTop ( Zuri II ) is a fantastic live-aboard catamaran. We lived and taught aboard her for three years but sold her last year and we currently own a Bali 5.4 ( Zuri III or Z3 as we call her now). Read about our various boats .

CONCLUSION: CATAMARAN vs MONOHULL

We were dyed in the wool monohull sailors for 15+ years. We loved the pretty lines of monohulls, the sailing ability and what we believed at the time to be much safer vessels. However, now that we have been avid catamaran enthusiasts, we simply can never go back to monohulls. Catamarans have come of age and with modern technology have overcome most objections that sailors of old had against them. They are well designed and built, are safe, and we simply love that they sail fast and upright. There is not a whole lot to dislike about a catamaran when you live aboard. We have weighed all the pros and cons of catamarans and found that the pros far exceed the cons. We made the change to a catamaran and do not regret it one bit!

We hope that this article will clear things up for all the prospective catamaran owners out there.

Contact us if you have any questions regarding catamarans, Fractional Yacht Ownership or our Charter Management Programs .

Estelle Cockcroft

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4 thoughts on “Catamaran vs. Monohull: We Changed, Should You?”

I read that the engineering on the catamarans were improved over the years. Whats the oldest year would you recommend designwise?

Scott, my apologies for the late reply. We’ve been traveling in Africa. Anyway, catamarans have come a long way and improvements in technology is happening at lightning speed. I reckon that even the older model catamarans are good. It depends on what your needs are. If you want something a little better performance wise, I would go for something no older than 15 years.

After buying a catamaran what is the difference in expense of a catamaran vs a monohull. Many articles state that not only the initial cost of a catamaran is more it the operating cost as well.

Hi Todd, it is more expensive. The annual dockage and haul out as well as maintenance will be more expensive. You obviously have two engines to maintain and various other pieces of equipment to service in both hulls. While there is more equipment there is also more redundancy and of course you have the comfort factor. So, depending on your situation, it’s probably worth it.

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Catamaran vs Monohull: The Great Sailboat Debate

16th jun 2023 by john burnham.

Do you love the natural sounds of water sliding past the boat’s hull and a breeze blowing across your rigging and sails while gliding ahead powered only by the force of the wind? If yes, you are well-suited to spending plenty of time on a sailboat, like so many generations of boat people before you. 

But do you take your lead from the Egyptians who rigged sails on their boats built of reeds along the Nile River or follow the path of the Polynesians, who used an outrigger for extra stability and sailed from one Pacific island to the next in the earliest catamarans?

The question of which is better for sailing, one hull or two, has been a matter of debate over thousands of years. Today, let’s explore these two basic types of sailboat, and while we may not settle the argument once and for all, hopefully in the process you will begin to discover which option is better for you.

What Are the Differences Between Catamaran and Monohull Boats?

The monohull and the catamaran (often referred to as “cat”) are the two most common categories of sailboats, and of the two, the monohull far outnumbers the catamaran in popularity due to its simplicity and sturdiness. Advocates of the catamaran, however, are typically even more convinced than monohull sailors that their boats are best due to performance potential and overall spaciousness.  

What are catamaran-style boats?

Catamarans are easily identified by their two-hull design. Two hulls sit side by side with an interconnecting deck or structural beams across the bap in the middle. Catamarans have been around since Pacific Islanders and other Austronesian people sailed them centuries ago, and they continue to gain popularity in a wide range of designs both as high-performance racing boats and ocean-cruising designs.

Although not part of this debate, a third sailboat type comparable to a catamaran is a trimaran. Trimaran sailboats are constructed similarly to catamarans but have three parallel hulls rather than two. Collectively, catamarans and trimarans are referred to as multihulls, and sailors of both types often refer lightheartedly to monohulls as “monomarans.”

What are monohull-style boats?

Monohull sailboats are the most common boat type because they feature a single hull, typically with a single mast and two sails. Rather than maintaining stability with a second hull creating a wider beam, monohull boats usually carry lead or other heavy ballast in their keel, or are stabilized by human weight as their crews lean out to counter the force of the wind. Monohulls can also be excellent racers and cruisers, depending on their size, volume, sail area, and displacement or weight.

Where Catamarans and Monohulls Excel 

Each type of boat has its advantages, depending on what the owner wants in a boat. Here are the main advantages of each type.

Catamaran advantages

• More space .  Catamarans have greater beam for a given length, which provides more space for the crew on a daysailer and larger living quarters on cruising designs, which are often laid out with berths in each hull and living quarters across the bridgedeck between hulls.

• Faster hull . If they are light enough, the sleeker shape and reduced wetted surface of two narrow, shallow hulls can produce quicker straight-line sailing speed than a single, deeper and wider hull.

• Comfort and stability . Two hulls provide better initial stability and generally heel less than monohulls, especially in light- or medium-strength winds and waves.

Monohull advantages

• Upwind sailing . When sailing against the wind, monohulls often sail at a closer angle to the wind and arrive more quickly at their destination.

• Easier motion . Heavier monohulls often have a slower, gentler motion in waves than a lighter catamaran. 

• Load carrying capability . A monohull’s performance is reduced less than a catamaran’s when the boat is loaded heavily with cargo or crew.  

• Righting characteristics . Larger monohulls have weighted keels that provide increased resistance to a capsize when the boat is heeled far over by wind or a wave and if capsized will return the boat to an upright position.

Catamaran vs. Monohull Sailing Speed

There are several reasons why a catamaran is often faster than a monohull boat. These include the fact that most catamaran hulls have less water resistance than monohulls, they are often lighter, and they can be more easily driven by a relatively small sailplan. At similar lengths, a catamaran can be dramatically faster than a monohull under similar sea conditions. However, weight is the enemy of a catamaran’s speed; a heavy or heavily loaded catamaran may be much slower than a lightweight monohull.

Catamaran vs. monohull power

A monohull under auxiliary power may be faster than a catamaran in certain conditions, like powering against a strong wind. In other wind and wave conditions, the catamaran is often faster. Also, with an engines on each hull, the cat is often much more maneuverable in close quarters or at the marina. While it may seem counter-intuitive, turning and controlling the boat is often less challenging than when sailing a monohull boat with the typical single engine. Monohull boats require more finesse when in tight quarters like berthing in a marina.

Catamaran vs. Monohull Efficiency

A sleek monohull may sail against the wind super efficiently, pointing close to the wind and making an excellent speed. However, the power-to-weight ratio of the catamaran allows it to make good use of whatever wind it has. Some fast, light catamarans can travel at speeds equal to or faster than the wind, something very few monohulls can achieve. When the wave action increases and you start sailing into the wind, the catamaran may lose its advantage, and in strong winds, the greater windage of the wide catamaran may have a pronounced slow-down effect compared to the sleeker monohull.  

Catamaran vs. Monohull Stability

Despite not having a weighted keel, a catamaran design is able to avoid heeling over in strong winds or bad weather due to its greater width or beam. As a result, the multihull also tends to be more stable at anchor and any time in calmer seas. However, if the winds are strong and the waves are large, a monohull, with its keel weight and ability to sail against the wind while controlling the sails, is sometimes the steadier of the two types. While a monohull with weighted keel can be knocked down by strong gusts of wind, it will only capsize in extremely large waves. Likewise, a cruising catamaran can only capsize in large ocean waves, unless it is a fast, lightweight catamaran, that can more easily tip over in gusty winds and waves.

Catamaran vs. Monohull Safety

Power catamarans and power monohulls are relatively comparable in terms of safety. But depending on the size of the mast and sails, the weight of the boat, and the wind and wave conditions experienced, many sailors believe that a monohull configuration is safer than a catamaran for a sailboat. That’s mainly because while a monohull will initially heel over further in a strong gust of wind, the weight of its keel provides increasing stability as described above and if completely capsized, the keel typically helps the boat self rescue.

It should be clarified that many sailing catamaran designs are conservatively configured and difficult to capsize except in extreme ocean wave conditions—and the same can be said for larger power catamarans. 

In terms of ultimate safety in the event of a capsize, however, the catamaran is considered safer because even should it turn once upside down, even if damaged, the catamaran with its two hulls and minimal ballast typically remains buoyant and provides a safer configuration in which to await rescue. By contrast, if a monohull’s hatches and port windows suffer damage in a knockdown, the boat can more quickly take on water and, weighed down by its keel or other ballast, be more difficult to keep afloat in extreme conditions.

Photo credit: Fountaine Pajot

Monohull vs. Catamaran Maintenance

Depending on size, age, and type of hull construction, maintenance costs will vary, but when comparing two fiberglass sailboats of similar length, the catamaran typically costs more to maintain. That’s because there are two hulls to care for, two engines, connecting structures that align the two hulls, and an overall larger boat due to the catamaran’s greater beam. Hauling and launching a catamaran can be more expensive at many boatyards, as well.

However, smaller catamarans of about 20 feet in length or less are often more comparable and sometimes cheaper to maintain than a similar length monohull. That’s because cats are often lighter and suitable for keeping on a trailer rather than in a slip or on a mooring.

Catamaran vs. Monohull Cost

Compared to similar length monohulls, a catamaran will likely cost more than a monohull boat. That’s mainly because when you purchase a 40-foot catamaran, you are buying two hulls and two engines, but you are also buying a bigger boat that typically has much more volume. In the case of a 40-footer, you end up with a boat that has a large saloon and three or four private cabins, whereas in the monohull, the saloon is smaller and you’ll have three smaller sleeping cabins. Annual maintenance will also be greater, as described above.  

Among smaller catamarans and monohulls, pricing will vary, and a lightweight beach cat may be less expensive than a heavier monohull keelboat of similar length.

Catamaran vs. Monohull, Pros and Cons

Depending on a variety of factors, there are plenty of catamaran and monohull pros and cons. These are some to keep in mind when comparing the two boat types.

Catamaran pros

• Comfort . On a cruising designed catamaran, two hulls with a wide beam create a stable and comfortable living environment with open spaces and plenty of standing room.

• Speed . Smaller, lighter catamarans are speed champions, especially in a moderate wind and modest waves. Cruising cats are often fast when sailing at reaching angles.

• Maneuverability . When equipped with two engines, a catamaran is highly maneuverable under power.

Monohull pros

• Upwind sailing . Although catamarans are often faster when sailing in a straight line, monohulls typically perform better against the wind.

• Self-righting . Except for unballasted monohulls that rely on crew weight for stability, the ballasted keel of a monohull prevents capsizing in most circumstances and the keel makes the boat self-righting.

• Maneuvering under sail . Monohulls turn more easily due to their shape, maneuvering in close quarters or tacking when sailing against the wind.

Catamaran cons

• Lack of feel when steering . Except in lighter, more performance-oriented catamarans, the broad platform with two rudders and two hulls sometimes isolates the sailor and provides little feedback through the helm when under sail.

• Sailing against the wind . Upwind sailing is generally not a catamaran’s best point of sail, but its straight-line speed can be such that it may arrive quickly at its destination, even though you will have traveled much farther than in a monohull.

• Pricing . Catamarans are typically more expensive than monohull boats due to their two hulls and other required build components and complexity.

• Not self-righting . Thanks to its wide beam and two-hull design, a catamaran is more difficult to flip, but it is not designed to right itself except for small beach cats where the crew can use their weight to re-right the boat.

Monohull cons

• Weight . Most monohulls have thousands of pounds of weight in the keel for ballast that is vital to its stability but can degrade performance.

• Wave motions .   Monohull boats are much more susceptible to rolling wave motions.

• Cabin . With the monohull cruising design, you'll typically find a darker interior with smaller port windows and fewer space options.

• Heeling effect . Monohulls will heel over in a moderate wind, which is normal but often uncomfortable for newer sailors.

Written By: John Burnham

John Burnham is a marine ​editor and writer with ​decades of journalism experience as ​Chief Editor of​ boats.com,​ Sailing World, Cruising World, and ​other boating websites. As a competitive sailor, he has led teams to world and national titles in the International One-Design, Shields, and other classes. Based in Newport, Rhode Island, John is a​ PCC leadership coach, a member of the ​America’s Cup Hall of Fame Selection Committee​, and a ​past board member of Sail America and US Sailing. For more, see  johnsburnham.com .

More from: John Burnham

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Catamarans vs. Monohulls

Which is better, a monohull or a catamaran.

This question gets asked a lot in sailing. Especially if you are looking to take your friends or family out for the week: which will be better, a catamaran (aka cat) or monohull (aka mono)? The short answer is it depends what sort of experience you are looking for. Let's explore this further.

Tell me more about monohulls and catamarans.

Monohulls are boats that have one hull. They are the classic sailing yachts that you see old black & white photos of, racing off Newport or Cowes.

Catamarans on the other hand have two hulls. They tend to be newer, and are said to be less traditional, although some of the earliest sailing boats ever developed may well have been catamarans.

Image: monohull (left) and catamaran (right)

Things to consider

Now that we understand the difference between catamarans and monohulls, let's look at attributes that are important in sailing. Once we have explained these, we can look at how each boat-type deals with them:

For obvious reasons, you want to have a stable boat. Monohulls are a bit like a roly-poly doll, where when pushed over, they tend to right themselves. That is unless they reach what is termed the "angle of vanishing stability" or AVS. Catamarans deal with stability in a different way.

Catamarans tend to be much more stable in most conditions, but should they capsize, they quickly become stable, albeit upside down.

Nevertheless capsizing is such a rare occurrence that "stability" here really means comfort when sailing.

Angle of Vanishing Stability (AVS) graph, image thanks RYA: rya.org.uk

Living area

Your boat needs to strike a balance between sailing well and being comfortable to spend time in. The layout of the boat is important in this regard: what level it is on, how large it is, and how square the space is.

Lagoon 450 Living Area. Image thanks vivisail.com

The draft of a boat is how far in the water it goes. "How much does she draw" means "what is the minimum depth of water that this boat needs so she doesn't go aground". Monohulls by definition require a keel, a heavy piece of iron or lead that goes deep into the water. Catamarans do not require this, and therefore tend to have a "shallower draft".

Draft and Freeboard explained. Image thanks thecampfirecollective.com

Maneuverability

Being able to easily maneuver your boat is clearly an advantage in tight situations, such as when docking in a crowded marina. Both monohulls and catamarans have their pros and cons here, which will be explained further below.

Maneuverability, image thanks Cruising World (cruisingworld.com)

The speed of a sailboat is not as simple as for a motorboat. The angle of the wind has a large effect on the speed of a sailboat. Some boats can sail faster when close to the wind - monohulls normally fall into this category - while others can sail very fast when the wind is on their side (aka a beam reach) - catamarans usually like this sort of "reaching" sailing.

F50 catamaran in the fastest sailing competition in the world. Image thanks SailGP and James Wierzbowski

Having natural light and a decent view can make the living space much more comfortable. With monohulls, most of the living space is "down below" whereas for catamarans, most of the living area happens "up" in the saloon which is located between and above the two hulls. This creates two different environments. One person's "cozy" is another person's "claustrophobic". Just the same, one person's "light and open atmosphere" is another person's "soulless". So there is a fair degree of taste to this particular aspect.

Interior of the incredible Nautor Swan 48, image thanks Nautor Swan

"Feeling Sailing"

By this we mean the feel of the boat responding to the wind as she slices through the water. Some people sail for this feeling, while others simply sail as an ecological, efficient way to move from A to B. Monohulls and catamarans offer very different visceral experiences here.

WallyCento Tango sails off Monaco, image thanks Gilles Martin-Raget/Wally Yachts

In breaking down the pros and cons of monohulls and catamarans, we found that a pro for one was a con for another. With that in mind, we think it is more helpful to list the pros of each, so you only read it once. Here goes:

8 Pros to Catamarans

1. catamarans are inherently stable..

Two hulls provides a wide base, which means in most sea states, less "bobbing". Every now and then, when the space between wave tops is a certain distance, the cat can lurch. But this is more the exception than the rule.

Great illustration of reduced rolling on a catamaran, image thanks aeroyacht.com

Here are some more pros of stability:

• Stability is a big factor for families with young children or seniors. It suits "non-sailors" in the group;
• Stability is very helpful for those prone to sea sickness (although scopolamine patches are probably still required if someone is very susceptible to getting sea sick);
• Stability means things are more comfortable at anchor, and for cooking;
• Because cats don’t heel over nearly as much, storage and stowing of provisions and household items is much easier.

Apologies for resolution, a brilliant graph on catamaran stability, thanks sailingcatamarans.com

2. Catamarans have more space.

Catamarans generally have much more living space in the main salon, galley and cockpit, and in the cabins. This can allow for greater privacy when chartering with friends or children, as the two sleeping areas (one in each hull) are separated by the living area. Here are some more pros of space:

• More space on a catamaran for preparing food, which means the cooking experience tends to be less a balancing act, and more like the kitchen at home;
• More space on a catamaran for storing things, which means people are not tripping over them throughout the trip.
• The space on a catamaran is square-shaped, akin to an apartment, as opposed to a monohull which tends to be more rectangular.

Interior of a Lagoon 620, image thanks Indigo Bay Yacht Charters

3. Catamaran living space is above the water line.

On a monohull, almost all living space on a is at least partially below the water line, which limits light and view, and can lead to claustrophobia in some. Catamarans on the other hand, sit above the water line. In addition:

• Ventilation in the main saloon area on catamarans is generally excellent, given their above-water design.
• Most of the living quarters are also above the water line, which allows for more light and a better view, as well as better circulation of air.

4. Catamarans can venture into shallower areas.

The lack of keel on a catamaran results in a shallower draft, allowing to anchor in shallower water, which is especially valuable around reefs in the tropics.

Shallow draft of a catamaran, image thanks aeroyacht.com

5. Catamarans can turn on a dime.

Because catamarans have two engines and two rudders, maneuverability in tight spaces is improved, with most cats being able to turn 360º within the length of the boat.

6. Catamarans (usually) sail faster.

Without the need for a heavy keel, catamarans are lighter than an equivalent monohull. That, plus the fact that they keep their sails perpendicular to the wind, means they sail faster than monohulls, especially on a run or broad reach.

The magnificent HH66 catamaran, image thanks Sail Magazine

7. Catamarans are harder to sink.

Without the need for a lead-weighted keel, catamarans are not just lighter and faster, they are also harder to sink. Monohulls have been known to "lose their keel", by hitting something such as a semi-submerged container or even a whale. When this happens, the boat will tend to sink within minutes. Catamarans do not have a keel to lose, which means in this (admittedly very rare, blue-water) event, catamarans come out trumps.

8. Catamarans allow spooning.

Most catamarans have a trampoline or net at the front. This allows for spacious and comfortable cuddling under the stars - not to be underrated.

Monohull Pros

1. monohulls look great..

You can’t beat a monohull sailboat for good looks. Classic, sleek, beautiful, there is a timeless beauty to monohull sailboats.

Catamarans on the other hand have a “non-traditional” aesthetic that some consider to be a little harsher on the eyes. Let's face it, many are downright ugly.

2. Monohulls are a romantic, evolving tradition.

Do you love the old photos of well-dressed people sailing their immaculate wooden monohulls in beautiful surroundings? If you answer yes to this question, take a good look at monohulls. That romance and tradition is still there.

3. Monohulls give you more options.

Due to the sheer volume of monohulls made over the last century, there are many more options for a boat that meets your individual lifestyle, personal aesthetic, or budget.

4. Monohulls carry a lower cost.

• Monohulls take up half the space at a marina than catamarans, and therefore generally cost you half as much.
• Monohulls are more readily available used in good shape, and cost less to charter for equal sleeping capacity.

5. Monohulls sail better upwind.

Due to their keel, monohulls can sail higher into the wind than most catamarans. Some of the more exotic catamarans have daggerboards which serve the same purpose as a keel, and therefore improve windward performance substantially. However 95% of cruising cats (ie. those you can charter) do not have daggerboards. Furthermore:

• A monohull will be far easier than a catamaran to tack.
• Monohulls slice through the water effortlessly. On some catamarans you get an irritating slapping of water on the bridge decks in rougher seas.
• A monohull is generally faster to respond to the helm (in other words, they turn faster). This is because most cruising cats have little "spade rudders", with their depth dictated by the need to have a shallow draft. Whereas with a keel, a monohull can have a far deeper (read: more responsive) rudder for its draft.

Monohull sailing upwind, image thanks Sail Magazine

6. Monohulls give you more feedback when sailing.

This factor (and lower cost) is why most sail training happens on monohulls. If you have too much sail out for the wind, your overpowered monohull will heel over and become a pain to sail, before anything breaks. 

On a catamaran you get less feedback at the wheel, which if you are not being very attentive can get you into trouble in big winds.

Then there is the visceral joy of "feeling sailing". A monohull will heel (meaning it is designed to tip over anywhere from 10º to say 50º) whereas a catamaran won't. While their increased heeling can be a performance disadvantage, it can also be an advantage as it is a lot of fun. 

7. Tacking is easier on a monohull.

While they can accelerate faster, catamarans also decelerate much quicker, and as such can have a harder time maintaining momentum through a tack. It depends what sort of sailing you are after. If it is about enjoying being outside, and not so much about the sailing itself, then a catamaran is fine. But if you are out there sailing for sailing's sake, then you will probably find more enjoyment on a monohull.

8. Monohulls tend to swing less at anchor.

While they may rock more in a side to side motion than their equivalent catamaran, monohulls tend to swing less at anchor.

Libertas on a mooring ball. Monohulls exhibit less "sailing on their anchor" when moored.

Conclusions

The above shows that there are no clear winners to the Catamaran vs. Monohull debate. At Sailing Virgins we teach and cruise on both monohulls and catamarans. If you have to make a decision yourself it really comes down to:

• How much hard-core sailing you (and your crew) intend to do;
• What your budget is;
• How much space you need;
• How shallow the bays are that you would like to visit.

We hope that helps your decision making. If you would ever like to know more, if you become a Sailing Virgins Patron, you can take part in any of our once-per-month live Q&A sessions, where absolutely any sailing-related question if yours can be asked and answered. Patron support starts from as little as $3 per episode. Click here for more information.

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Catamaran vs. Monohull: Which Is Better?

Table of Contents

It used to be that sailors and powerboaters (blowboaters and stinkpotters, respectively) used to hold the loudest arguments about which was better– sailboats or powerboats. Today, the debate is centered around catamarans and monohulls— how many hulls are best? Is there a best?

Let’s look at what each boat offers— and continue to read for all Pro Boatsetter Tips .

Got a boat? Put it to work

The benefits of catamarans

Spacious for large crews, easier on your body, shallow drafts, safety system in case of emergencies.

Pro Boatsetter Tip: Did you know catamarans have seen a great surge in popularity over the last decade?

If you’ve got a large crew or plan on throwing parties aboard, you’ll probably benefit from the catamaran’s (also known as “cats”) roominess. Cats offer separation on deck with the aft cockpit , forward lounge or trampoline, and maybe even a flybridge .

Inside, cats have cabins and multiple heads for convenience. A cat of a given length (let’s say 40 feet) has 1.25 x the space of the same length monohull. In other words, it feels the same as a 50-foot monohull. It’s also usually laid out in a more user-friendly manner.

Cats have two hulls, making walking easier for kids, older folks, and pets! Because of its steadiness, you and your crew are less likely to be fatigued by the end of your boat trip. Maybe stay out longer to catch more fish.

Best of all, you’re less likely to feel seasickness because they don’t feel “on their ear” even when sailing in high winds and rough conditions. Not to mention, they’re much easier to sleep on.

Most sailing catamarans have a shallow draft perfect for skinny water cruising like the Chesapeake Bay and Florida. They can venture into areas previously off-limits to deep-draft monohull sailboats.

Most cats have double the systems, including bilge pumps, freshwater pumps, showers, heads, engines, etc. This means if one system fails, you’ve got a backup!

Twin screws also offer easier docking and increased maneuverability. It’s much easier to drive a large sailing cat than a single-engine monohull, especially in a cross-breeze and when docking, backing, or maneuvering in tight quarters.

The benefits of monohulls

• Performance
• Easy cruising
• Familiarity
• Availability & expense

Pro Boat Type Tip: Operating a monohull can be challenging! If this is your first time sailing on a monohull , make sure to rent with one of our pro captains.

Competitive performer

If you want to win a sailboat race, use a monohull. This boat’s design makes it a favorable contender even when weather conditions are working against you.

Let’s add a caveat here for cruising under power– cats tend to be more fuel efficient because they’re lighter and they’re not dragging a heavy keel through the water.

Easier motion

Monohull sailboats have their own groove. This motion is predictable and distinguishable by pro sailors. Cats, on the other hand, depend on the body of water’s condition state. Also, cats pound when going upwind into big seas if their bridge deck is pummeled by waves, while monohulls tend to slice through the waves.

Familiar handling

Monohulls have been around for centuries, and chances are that you learned to sail or powerboat on one, so their handling is more familiar. A cat’s dimensions may seem intimidating at first, especially if you are short-handed.

Availability & cost

Monohulls are more available, especially for rent. There are simply more of them. They’re also usually less expensive to rent and less expensive to moor in a marina.

The good news about catamarans and monohulls

There’s no right or wrong choice. It all depends on your budget but, above all, your boating lifestyle. So the better question is: what will you use your sailboat to do?

Party at hidden coves with your crew. Take the kids out for a fun sailing excursion. Sunset cruises with your partner. Enter a regatta; win! Rent it out for an extra income.

Learn more about boating types, gear, and fun water toys at Boating Resources .

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Zuzana Prochazka is an award-winning freelance journalist and photographer with regular contributions to more than a dozen sailing and powerboating magazines and online publications including Southern Boating, SEA, Latitudes & Attitudes and SAIL. She is SAIL magazines Charter Editor and the Executive Director of Boating Writers International. Zuzana serves as judge for SAIL’s Best Boats awards and for Europe’s Best of Boats in Berlin. 

A USCG 100 Ton Master, Zuzana founded and manages a flotilla charter organization called Zescapes that takes guests adventure sailing at destinations worldwide. 

Zuzana has lived in Europe, Africa and the United States and has traveled extensively in South America, the islands of the South Pacific and Mexico. 

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Better Sailing

Catamarans vs Monohulls: Which is Better a Better Sailboat For You?

The question of whether to choose a monohull vessel or a catamaran is an eternal dispute between boat lovers. These arguments are usually based on one’s preferences and philosophy. In fact, the popularity of catamarans has grown significantly since their design facilitates many aspects of sailing. But, both mono-hulls and multi-hulls have their advantages and disadvantages. So, in this article, I’m going to list some details about both cats and monohulls so as to help you understand which one is better for you. Remember it all depends on what sort of experience you are looking for. Keep reading!

What is a Monohull?

In general, boats float due to the fact that they displace more water than they weigh. The hull is in “displacement mode” while a boat is stationary or moving slowly. That is, all of the upward forces that keep it afloat come from flotation, which is achieved by displacing water. With certain hulls, increasing the boat’s speed beyond a particular point causes the hull to lift up and skim along on top of the water. This is referred to as “planning.” Monohulls can be divided into two types; displacement and planing hulls.

Some hulls are only capable of moving at displacement speeds . This style of boat has generally slow speed, but it is incredibly efficient to operate. While moving, most have a smooth motion , though rolling (side-to-side movement) might be an issue. On the other hand, while on the sea, achieving fast speeds requires a hull that can readily transition onto a plane. Flat bottom surfaces from amidships aft, or from the middle to the back of the bottom, and a flat transom, or the back of the hull, are the main characteristics of a planing hull. Keep in mind that at a sharp angle, the transom must contact the bottom.

What is a Catamaran?

Nowadays, catamarans are becoming more and more popular. They’re particularly appealing to fishermen since they combine high-speed performance and a smooth rough-water ride with a solid angling platform. Catamarans have two primary disadvantages . Firstly, they require twin engines. Also, larger catamarans may be too broad to fit into standard marina docks. Another disadvantage is that there is less usable interior space than on a monohull of comparable length.

The two hulls of a catamaran are known as amas. These days, the popular phrase is “sponson,” but ama is still acceptable. Note that in comparison to its entire length, each ama is quite short. The narrow amas of a catamaran travel quickly through the water with little power. This allows for fast speeds even when the amas aren’t actively planning.

Trimarans on the other hand have three separate hulls. Sailboat designers have successfully employed this design to provide a large central hull for cabins. But, also for two outrigger amas for stability. The trimaran concept hasn’t been used much in powerboats, despite the fact that several “cathedral” hulls are related. Instead of three independent hulls, a cathedral design squishes them together to the point that they often share a similar planing surface near the transom.

Monohull or Catamaran? Let’s Take a Look at Their Pros and Cons

Catamarans are unsinkable because they are incredibly stable and have natural buoyancy. Yes, they can capsize in a major accident. But, being rescued while floating on the water’s surface is preferable to plunging to the bottom in a monohull. Furthermore, moving around on a flat deck is far safer than on an angled deck.

Classicists have long claimed that catamarans are not as safe as their keelboat counterparts. However, this remark is now regarded as archaic. Since it dates from the mid-nineteenth century when the majority of catamarans were made by amateurs. They could readily tip over even in calm weather, especially if one of their bodies became leakproof owing to damage. Sinking is extremely difficult, if not impossible, for a well-built modern catamaran. Modern structures are designed using computer simulations of various water conditions. Bear in mind that the maximum potential safe sail area is available to cruisers and charter possibilities in particular.

Monohulls , particularly sailboats, offer significantly stronger “self-righting” capabilities in the event of a worst-case knockdown situation. In a catamaran, once you’re upside down, you’re stuck there…And, who wants to be upside down in the middle of the ocean? Returning to an upright position gives you complete access to onboard safety equipment. This includes a liferaft, dinghy, flotation devices, EPIRBs, and strobe lights, which can save you if the boat sinks.

Generally, a catamaran’s high speed allows it to avoid adverse weather . While catamarans do not point as high into the wind as monohulls they are around 20% faster . Or, if they do, they create more leeway or slide sideways. This means that even if you sail upwind at a slightly broader angle to the wind than a monohull and cover a more distance, you will arrive at your destination sooner than a monohull.

A modern performance catamaran with daggerboards and strong sails may point as high as a monohull of comparable size. It will point similar to a comparable monohull but will sail far faster. This allows it to reach an upwind position far sooner than a monohull. However, it’s worth noting that the majority of production cats on the market are underpowered and have standard smaller sails. Many of these designs perform poorly in light breezes. Unless they’re equipped with larger headsails, a Code Zero, and a square-top mainsail.

While cats are more comfortable and safer in rough weather, we must admit that if the weather gets extremely terrible (60 knots of wind or more), it’s better to be on a monohull for survival reasons. For serious offshore single-handed sailing, I believe a monohull is superior since it is easier to hove-to in it. Bear in mind that when you’re in a cat during severe storms you won’t feel any danger, but it demands some nifty seamanship. And, keep in mind that even though a monohull can capsize in bad weather or even roll in a storm, they usually right themselves. A catamaran , on the other hand, is incapable of self-righting . However, the cat will usually stay afloat, providing a safe haven to wait out until aid arrives. Modern catamarans, on the other hand, are extremely difficult to capsize.

That being said, most catamarans can travel 200 to 250 miles per day, and with contemporary technology allowing one to control weather, it’s difficult not to deal with bad weather. In many circumstances, a faster boat is a safer boat because it can outrun heavy weather. A catamaran can avoid the worst weather and, at worst, put itself in the best position to avoid the brunt of a storm if there’s good weather routing information.

So, to sum up, cruising catamarans are quicker than monohulls, and sailing catamarans, depending on their angle, can sail at half the speed of the wind. It’s great to be on a boat that can swiftly attain high speeds and get you to your destination safely and on time. However, catamarans are faster because of their lower surface area , but their prices are generally higher than those of monohulls. Instead of fighting the elements, monohull designs operate in harmony with them . In addition, keep in mind that when sailing upwind, sailing catamarans are inefficient and tack slowly.

Fuel Consumption

Do you want to save money on gas? Then, in most cases, catamarans have less fuel consumption than monohull boats. Catamarans save a lot of gasoline since they have a less wetted surface area on their hulls. They can propel the boat with just one engine in weak winds. Also in flat water, and if the engines have the same number and horsepower. However, in heavier weather , where the higher efficiency of a monohull design provides less resistance , this is not the case.

Generally, catamarans have two fuel-burning engines, which can raise fuel expenses . However, because a catamaran is lighter on the water, it requires less energy to move. In a catamaran, you’ll use less fuel than you would in a monohull. Furthermore, in low-wind areas, catamarans might choose to use only one engine. This reduces the amount of fuel consumed by a catamaran even more . But, only calm waters are subject to these laws. A monohull is far more efficient than a catamaran in navigating waters with heavy waves and heavy winds. A monohull will consume less fuel than a catamaran in this situation.

The best feature of catamarans is that all of the rooms are on the same level. The four-cabin arrangement is common with sailing cats and is popular among charter companies. Owner versions usually feature three staterooms, with one hull serving as a big cabin for entertaining. Most catamarans have a big central living room with not one, but two narrow staircases leading down into the hulls—one on each side. It’s a little like living in a tube in the hulls. They’re too thin to accommodate walkaround double/queen berths like those found in monohulls. But, in case of an emergency, it would be impossible to communicate with someone in the opposite hull.

Obviously, a monohull has less space than a catamaran. This is due to the fact that a cat is broader and has a larger deck surface. It also has twice as many hulls as the other, giving you greater total space between them. People who want to host parties on their boats will appreciate the extra space. The catamaran is usually the party boat of choice at the docks, according to most boat owners. Even if you don’t like to host parties, the extra room might be useful for lounging on the balcony or tanning. The boat’s large open space also makes it simple to utilize as a fishing platform.

You also have more room for equipment like surfboards, rafts, and other equipment that can easily clutter a monohull’s deck. Even fishing from a catamaran can be easier because the deck allows for plenty of space between anglers. Owners of catamarans also have more room for carrying fresh water and installing generators and solar panels. A catamaran’s interior room is often larger, and in luxury catamarans, it’s easier to install heavy appliances like washers and dryers inside. These can be fitted to larger monohulls as well, though it will be more difficult than on a catamaran.

All of the extra space, on the other hand, means the catamaran owner has more room to maintain and clean. Furthermore, all of the other stuff that can be brought into the boat will add to its weight . And, as well all know, a heavier boat will consume more fuel and move at a slower speed.

Maneuverability

With their twin motors, catamarans are incredibly agile . On a catamaran, the engines are widely apart, making navigating more easier and more precise than on a monohull, unless the monohull incorporates a bow thruster. Most of the time, a bow thruster isn’t required because the engines are around 20 feet apart. When there’s no bow thruster (as do few monohulls) you have to rely on prop-walk and prop wash on the rudder. On her own axis, a contemporary catamaran can turn 360 degrees. A monohull would be unable to accomplish this while it has a larger turning circle.

A monohull under sail, on the other hand, is far more maneuverable and will tack much faster than a catamaran. But, the ease of movement under motor on a catamaran, especially in close quarters, is substantially superior. They also feature shallow drafts , allowing you to maneuver into areas that a monohull cannot, as well as anchor closer to shore . However, monohulls are more maneuverable as you don’t have to deal with two hulls. They can make sharper turns and travel through small channels and small areas easier than cats. In addition, their hull displacements lessen the negative impacts of crosswinds in confined spaces.

Anchoring and Docking

While docking a catamaran is simple, its big size makes it difficult to fit into a standard slip. However, with some skill and good planning, finding room should be no problem. You may even anchor or moor the boat and dock it with the dinghy, which is much easier than a monohull. However, keep in mind that in most cases docking, hauling, and slipping a monohull is significantly easier, takes up less room, and is far less expensive.

Moreover, docking a catamaran can be a challenging task. This is due to the fact that catamarans are frequently too wide to dock in the marina’s core regions. As a result, they must be docked at the far end of the dock. Therefore they have fewer docking options and raise the cost of docking. Owners of catamarans sailing through places where there aren’t many catamarans may find it difficult to find a dock at all. This is especially true in the northern Atlantic, where monohulls outnumber catamarans.

Keep in mind that one of the most significant advantages of a sailing multihull is its stability . Not only at sea, when heeling simply does not – or should not – occur to any significant extent, but also at anchor. It also greatly expands one’s anchorage options to include areas influenced by the swell. This is quite common in the Caribbean, where a slight shift in wind direction may make a previously flat, quiet anchorage intolerable in a monohull. In addition, its fairly shoal draught expands the options even more.

Catamarans have a large platform, making them ideal for relaxing at anchor without the rolling motion that monohulls are prone to in a swell. Many monohull sailors had to leave anchorages because of the uncomfortable anchoring. This is because large rollers or swells entering an anchorage can make the situation extremely uncomfortable and dangerous.

Also, a bridle is tied to both bows and down to the anchor chain on catamarans , resulting in a fairly secure position at anchor . In heavy winds, many monohulls tend to sail at anchor since the bow acted as a sail (due to the high freeboard). They sail in one direction until the chain snatches, then tack across and sail in the opposite direction, almost completely dislodging the anchor. The catamaran, on the other hand, is much more stable at anchor and does not sway as much.

Sailing Abilities

Most cruising multihulls won’t point like a monohull with a deeper keel upwind, and the motion may be rather unpleasant when sailing in rough weather. You must also keep a close eye on the sail area, but we’ll analyze this further below.

Moreover, catamarans are not suitable for racing and sailing sports. They can be fantastic for a holiday or even living aboard, but most racers would never buy one because of the stability. There is no sense of wind, waves, flying, or the boat itself on a catamaran. It’s quite tough to tell when it’s time to reef. While this can be done by feel on a monohull, there is specific instruction for catamarans as to what winds the sail area should be reduced.

When sailing to higher latitudes, like the North Atlantic, then a monohull would be a better solution than a catamaran. Residential areas are easy to heat and keep warm, and traditional metal may even melt thin ice. The contrary is true in the tropical zone, where huge catamaran salons would be unbeatable.

Monohulls can sail higher into the wind than most catamarans due to their keel. Daggerboards, which serve the same role as a keel and boost windward performance significantly, are common in some catamarans. However, daggerboards are not seen on 95 percent of cruising cats (those available for charter). Also, a monohull will be much easier to tack than a catamaran and glide lightly through the water. Moreover, in rougher seas, certain catamarans experience an annoying slapping of water on the bridge decks. A monohull responds to the helm more quickly than a multihull (in other words, they turn faster). This is due to the fact that most cruising cats have small “spade rudders” whose depth is dictated by the need for a modest draft. While with a keel, a monohull can have a more responsive rudder for its draft.

Monohull spreaders are 90 degrees to the mast, however, catamaran spreaders must be backswept. The reason for this is that a monohull has a backstay, and by combining it with the intermediates, you can achieve a lovely pre-bend in the mast. Keep in mind that the pre-bend is to flatten out the mainsail and allow for better performance.

Also, in order to pre-bend the mast on a catamaran without a backstay, you’ll have to utilize the backswept spreaders and diamonds. The reason I bring this up is that if you want to broad reach or run on a catamaran, you can’t let the mainsail out all the way because the backswept spreader tips could puncture the cloth. Because the spreaders on a monohull are at 90 degrees, you can let the main and boom out much wider, which is obviously more effective. This is one of the reasons why a catamaran should broad reach and tack downwind.

• Maintenance

Because catamarans have two of everything, there is a clear trade-off between maintenance costs, reliability, and redundancy. One of the most significant advantages of having two of everything is that you have a backup . As a result, even if one component fails, you can typically still utilize the boat, such as running on one engine while the other fails. While redundancy is fine, lower maintenance and repair costs are generally preferable. Although having two of everything provides you some redundancy, I doubt you’ll want to take the boat out if one of the two hulls “fails.” Of course, this means two hulls to clean and antifoul, double the engine maintenance, and so on , but having two of the important pieces of equipment, such as engines, outweighs the disadvantages.

Due to their weight-bearing, catamarans have minimal to no heeling and do not roll at anchor. With sudden gusts, heeling on a monohull can be dangerous and uncomfortable, not to mention seasickness. Again, the trade-off is a noisy ride and fast movement, which many people find uncomfortable in bad weather. However, the heeling action of a monohull sailboat offers stability, spills wind from the sails, and provides safety.

Catamarans, unlike monohulls, do not have ballast in their keels, therefore they rely on beam and buoyancy for stability. Typical cruising catamarans have a beam-to-length ratio of around 50%, while several modern designs exceed this figure. A 45-foot catamaran will be around 22 feet wide, offering a highly solid sailing platform. Monohulls, unlike catamarans, cannot overcome rolling and pitching because of their narrow beam and lead ballast.

Rolling and pitching on a monohull while underway is quite dangerous. But, walking around on the deck of a catamaran while underway is easier because the boat is considerably more stable and does not heel. Sail adjustments and reefing are also significantly easier and safer for the crew as a result of this. The risk of falling overboard on a catamaran is far lower than on a monohull because of the rolling and pitching motion.

Generally, buying a catamaran is substantially more expensive than a monohull. So, if you opt for a cat you should also consider your budget before even starting your research. Pre-owned monohulls, on the other hand, are extremely inexpensive to purchase due to a current supply that considerably outnumbers the demand.

Nowadays, catamarans are in high demand , and they normally keep their worth far better and longer than other types of boats. And that’s why the market is currently centered to manufacture lots of them. Bear in mind that looking for a catamaran under $250,000 your options will be limited, and finding a catamaran under $100,000 is nearly difficult. Unless you opt with older boats like the Prouts or the less priced Geminis, a monohull is your best bet in this instance.

The cost of a cat rises if you need at least two of everything. But, keep in mind that due to their popularity, catamarans have a high resale value and a low depreciation rate , and they normally sell faster than monohulls. Due to the fact that most catamarans are not made in the United States, delivery expenses must be considered when purchasing the boat. Multihulls are becoming more popular, and as a result of the increased demand, they command greater prices in both the new and brokerage markets. Lastly, when considering a purchase, keep in mind that maintenance costs are substantially higher than on a monohull.

Catamarans vs Monohulls – The Bottom Line

So, this is it! We’ve come to the end of this highly discussed topic among sailors. Obviously, everything would be determined by two basic factors: personal preferences and budget considerations. Both monohulls and multihulls have their pros and cons and it’s totally up to you to decide which one suits you best. Because the two types of vessels provide such a different experience, it is highly recommended that you rent and test each one before purchasing to compare everything. In any event, it’s reasonable to say that a catamaran is an excellent choice for a charter, if not for purchase. Despite its high price, it provides comfort, space, and stability but you have a better overall sailing experience with a monohull. So, I hope that this article will help you make the right choice according to your needs. I wish you good luck with your research!

Peter is the editor of Better Sailing. He has sailed for countless hours and has maintained his own boats and sailboats for years. After years of trial and error, he decided to start this website to share the knowledge.

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Catamaran vs Monohull - 6 Points To Consider Before Choosing Your Boat

Multihull or monohull? It’s an age-old (and ongoing) debate, and each option certainly comes with its own set of pros and cons. Whether you’re thinking of investing in a boat of your own, or planning on chartering one for a sailing holiday, one thing’s for sure: the type of vessel you select will have an impact on your cruising experience. Ultimately, what you intend to use it for will determine which type of boat would be best suited for the job. In this article, we considered the aspects of space & design; safety; stability; speed; manoeuvrability and cost, so do read on for our comparison of the multihull catamaran vs the monohull sailboat.

THE CATAMARAN VS THE MONOHULL – A COMPARISON

1. stability . which is more stable, a catamaran or a monohull.

Fact – by virtue of having two hulls, both under sail and at anchor, catamarans are more stable than monohull boats. If you are sailing with young children, seniors – or anyone who’s not all-too steady on their feet – a catamaran will provide you with a much smoother and stable cruising experience than a monohull. Being multihulled, catamarans are not nearly as susceptible to the action of the ocean’s waves. This prevents them from heeling as much as monohull vessels would under the same conditions. As anyone who suffers from seasickness will tell you, this can be an enormous bonus. What’s more, a cat’s multihull stability will also be highly appreciated by anyone prepping food in its galley (two hulls make for a somewhat more pleasant dining experience, too). Lastly, because of its superior stability, walking around the deck (and moving around the interior) of a catamaran is much easier than it would be on a monohull. The verdict? Catamarans are more stable than monohulls.

2. SAFETY . WHICH IS SAFER – A CATAMARAN OR A MONOHULL?

The inherent stability and natural buoyancy of a catamaran automatically increase its safety while out at sea. As catamarans don’t have heavy, lead-loaded keels, they will remain afloat, even when (heaven forbid) they are holed. This is because most modern catamarans have such a large amount of buoyancy built into them that they are almost unsinkable, making them much safer than monohull sailboats in this regard. Sure, catamarans can capsize, but being rescued from an upside-down, still-floating multihull is definitely preferable to sinking to the bottom in a monohull! The verdict? Contemporary catamarans are incredibly buoyant and virtually unsinkable, making them safer than monohull sailboats.

3. SPACE & DESIGN . WHICH IS MORE SPACIOUS AND PRACTICAL – A CATAMARAN OR A MONOHULL?

Due to the boat's shape (and the amount of usable space each design allows), when compared square-foot-for-square-foot, every area of a monohull vessel is usually smaller than its catamaran counterpart. Generally, catamarans offer more room to move in its galley, cockpit and saloon areas than similarly priced monohull boats. Often, catamaran cabins are more spacious too, with cabins of even the smallest cat offering stand-up headroom. Catamarans are also generally more private than monohulls, and more straightforward when it comes to separating living spaces. This can be a significant advantage when you are cruising with children or guests. As most of a cat’s living spaces are above the waterline (on a monohull, only the cockpit is above the waterline), you’ll also enjoy superior airflow through ventilation on a catamaran. If you’re a scuba-diving enthusiast, carrying all of your diving equipment will be easier on a cat. What’s more, catamarans have trampolines, which make them perfect for onboard sunbathing as well as stargazing in the moonlight – a big, romantic plus for sure! Catamarans also have shallower drafts, allowing you to drop anchor closer to the beach than a monohull would. The verdict? Compared square-foot-for-square-foot, catamarans are more spacious than their monohull counterparts. In terms of design, a catamaran is perfect for onboard sunbathing and stargazing and will allow you to anchor closer to shore.

4. MANOEUVRABILITY . WHICH IS EASIER TO STEER, A CATAMARAN OR A MONOHULL?

Most catamarans can turn 360 degrees within their own length, something very few monohulls are capable of doing. However, generally speaking, monohulls are quick to tack, more manoeuvrable, and quicker to respond to the helm than catamarans. At the helm of a catamaran, you’ll get less feedback from the wheel than you would from a monohull. This will require you to be vigilant in rough conditions, and you’ll also have to know when to reduce sail. Compared square-foot-for-square-foot, catamarans are much lighter than monohulls, which means they also slow down a lot quicker. For the most part, catamarans are easier to dock than monohulls, as they have two motors and two rudders which simplify things a lot. This also does away with the need for a bow thruster. The verdict? We’re calling it a tie. Although monohulls are generally more manoeuvrable than catamarans, thanks to their two motors and two rudders, cats are easier to steer than monohulls.

5. SPEED . WHICH IS FASTER, A CATAMARAN OR A MONOHULL?

Although catamarans cannot sail as close to the wind as monohull sailboats, most cats do sail faster than a monohull on a reach. On downwind runs, reaches, and broad reaches, in particular, catamarans usually beat monohulls when it comes to speed, going about 20% faster than a monohull (even outrunning bad weather when necessary!). Another plus is that sailing a catamaran requires less physical exertion than sailing a monohull. The verdict? Even if they don’t point as high into the wind, catamarans are faster than their monohull counterparts.

6. COST . WHICH IS MORE EXPENSIVE, A CATAMARAN OR A MONOHULL?

Generally speaking, catamarans with similar sleeping capacity and equipment are more costly than their monohull counterparts (both to own or to charter). Just keep in mind that catamarans typically hold their value better and longer (and tend to be in higher demand) than monohulls. Comparatively, previously owned monohulls are cheaper to purchase than cats, as supply tends to outweigh demand by a large margin. The verdict? Catamarans are more costly than monohull sailboats. However, a read-through of Points 1 to 5 might convince you that they are worth the extra expense.

CATAMARAN OR MONOHULL? – YOUR NEEDS WILL DETERMINE YOUR CHOICE

Looking at the list of pros and cons above, it would seem that the catamaran comes out the clear winner – at least when judged on aspects of safety, space & design, speed and stability. However, your budget, the requirements of the people in your sailing group, as well as your own needs and preferences will all play a significant role in the boat you end up choosing. Both catamarans and monohulls offer unique advantages, and whichever choice you go with, we wish you many happy ocean voyages and an abundance of adventure! Ps. If you’re still unsure which option is the right one for you, why not check out the verdict from ocean adventurers who have lived aboard two monohulls and four catamarans over the past 25 years?

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Catamaran and Monohull Compared: Which is Better, Faster, Safier, and More Stable in Rought Sea?

Catamarans and monohulls are two vessels that have distinct features from each other. Catamarans have two hulls connected by a bridge structure whereas, as the name suggests monohulls have a single hull.

Both types of vessels have different features in terms of both aesthetics and function, let’s get into the details to find out more.

Do Catamarans Have More Space?

Since catamarans have two hulls, they are normally wider than monohulls. This gives the designers and owners the flexibility to maximize the space requirements in terms of space and function.

Vessels can be designed for either commercial or recreational uses. The additional space can serve as an advantage in both fields. In terms of recreational vessels such as yachts, the accommodation can be split up between the two hulls and can be well designed in such a manner that separate spaces can be allotted for the owner, guest, and crews with separate passages such that the path between the primary guests and the crew don’t collide.

In terms of interiors, the huge space addition can give the owners much more flexibility in choosing furniture without size restrictions and more space for additional appliances such as washers, dryers and so on which can make life on board much easier.

The deck can also house more people without the feeling of being enclosed in a closed space and for this reason, catamarans are normally used as party boats with wider deck space and more space to move around.

In terms of storage, catamarans have better storage options than monohulls as both the hulls can be utilized for different functions which not only increases the overall capacity of storage in terms of fuel , fresh water , cargo, and so on but also gives the designer an option to segregate the storage areas for different uses.

Catamarans are also now a growing trend in the fishing industry as the wide decks provide more area for the fisherman to move around without any obstructions making fishing much easier also, catamarans tend to roll less which stabilizes the vessel better than monohulls, giving more stable conditions for fishing without the risk of going aboard.

Due to the wider proportions, the spaces can also be designed in such a way so as to house tenders, jet-skis, and so on, on either of the deck spaces normally aft of the vessel mostly functioned by a small crane which can launch the vessel into the water.

Recreational activities such as swimming and diving can be performed with ease on both types of boats. On catamarans, the wide aft spaces also provide effective spacing for housing equipment and accessories such as dive tanks, telescopic staircases and so on which can serve as must-haves for similar activities.

The same can also be performed on monohulls with limitations to the width of the vessel. The wide superstructures on catamarans can also be used to house solar panels for green and renewable energy solutions which surely is going to be a great advantage in the near future.

Monohulls have the advantage of having wider compartments below the deck when compared to catamarans, as the overall width of the hull is larger than a single hull on a catamaran. This gives room for larger living spaces below the deck, which can have the option to walk around on either side of the bed.

Why Are Catamarans More Expensive Than Monohulls?

Catamarans are normally priced more than monohulls. This is because they have more overall area which requires more raw materials in the production stage than monohulls.

In terms of machinery, they have two or more engines on each hull depending on the width of each semi-hull and its supporting machinery which can increase the overall cost of the final product.

In terms of engines, maintenance is less frequent when compared to monohulls as they don’t need to operate on their maximum limits to push the vessel.

Maintenance costs can also be higher for catamarans as they have more machinery and more deck space, but on the contrary, the ease of maintenance will be much better in catamarans than monohulls as they have better accessible spaces.

The preventive maintenance for corrosion and marine growth on catamaran hulls is also higher as they normally have more area to treat than monohulls.

Are Catamarans Faster Than Monohulls?

Catamarans tend to outperform monohulls due to their slender hulls which help in reducing the drag forces. On performance power catamarans the space between the two hulls is called a “Tunnel” which is designed in a similar manner to an aerofoil so that it acts like a wing, which increases the aerodynamic lift forces thereby increasing overall efficiency and top-end speeds of the vessel.

The balance between the hydrodynamic and aerodynamic forces is the key aspect that determines the performance and stability of high-speed catamarans.

Fuel economy is normally better on catamarans due to the higher lift forces and lower water friction compared to monohulls which thereby reduces the overall load on the engines, reducing fuel consumption.

Is A Catamaran More Stable Than A Monohull?

Catamarans are generally more stable than monohulls in terms of roll stability. Let’s take an example of balancing a stick in the middle compared to balancing it by supporting the two ends, obviously, the second case has an advantage. In a similar manner, we can observe that catamarans have better roll stability when compared to monohulls.

This gives them an upper hand in terms of comfort and executing different operations onboard the vessel with ease, also reducing the risk of people falling on board the vessel. Catamarans are mostly used as ferries or passenger vessels as people tend to get less seasick on these kinds of vessels.

The deeper the deadrise the better the sea-keeping characteristics, most monohulls are designed with a deep v deadrise and tend to outperform catamarans which normally have displacement or semi-displacement hulls, in rough waters.

The typical catamarans are better in shallower water than rough water due to this reason and that’s why we see most of the coastal or inland cruisers as catamarans and most ocean-going vessels as deep v monohulls.

The draft can be defined as the distance of the waterline to the keel of the vessel. Catamarans normally tend to have a lower draft compared to monohulls which gives them an advantage of plying over shallower waters without the risk of grounding.

The lower the draft of the less the vessel, the less it is in contact with water, and therefore the overall water friction resistance is reduced leading to the need for lower power to push the vessel and better fuel efficiency.

What Is Easier To Sail A Catamaran Or Monohull?

For the thrill of sailing most sailors prefer monohulls over catamarans. They are sensitive to different forces like wind and waves acting on the vessel and there is an immediate response on the vessel. They ride through rough and choppy waves; this is the experience the sailors look forward to, giving them an adrenaline rush.

Sailing catamarans do not respond similarly to monohulls as the overall motions are reduced and also monohulls maneuver much easier than catamarans at high speeds.

Docking in marinas usually is easier with monohulls than catamarans as they require lesser space to mauver into the docking space.

Which Is Safer Catamaran Or The Monohull?

Catamarans normally tend to be on the safer side than monohulls in terms of backups and safety. If any machinery fails there is always a backup, say for example if rudder machinery fails on the port hull we can always get back ashore with the help of the starboard rudder, similarly if an engine fails there is always the second engine which can be used as a backup.

In terms of reserve buoyancy, if the port side hull gets damaged, the vessel will still remain afloat. These advantages can help people on board keeping them safe and saving a life.

The only downside to the above aspects is the maintenance costs which come up with the same as we discussed earlier.

Which One Should I Get?

The type of vessel should depend totally on your end goals in terms of functionality, performance, region of operation, and so on.

But always keep in mind never to get blinded by the length when you compare a monohull to a catamaran. A monohull in comparison might be longer but the overall space which is measured in cubic space will be higher in the shorter-length catamaran.

Going through the pros and cons the final decision should be made depending on your personal requirements.

About the author

I worked as an officer in the deck department on various types of vessels, including oil and chemical tankers, LPG carriers, and even reefer and TSHD in the early years. Currently employed as Marine Surveyor carrying cargo, draft, bunker, and warranty survey.

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Monohulls or Catamarans – Which is Best for the Cruising Sailor?

The debate between catamarans vs monohulls still rages, and most boaters are firmly on one side or the other. The truth is, either a catamaran or a monohull can provide a wonderful way to enjoy sailing, traveling, and being on the water. 

Both have advantages and disadvantages, and both have large and loud fan clubs. The choice between a catamaran and a monohull depends on your budget, lifestyle, and personal preferences.

My wife and I have owned both types of vessels over the years. After five years of cruising on a Lagoon catamaran, we decided to go old school and bought our current boat—a heavy, full-keel monohull. The catamaran was fun, for sure—but it wasn’t for us in the end. Here’s a look at all of the differences we learned about during our journey.

Table of Contents

Life at anchor, life at a dock, life underway, living space, storage space, ride comfort and motion at sea, maintenance time and costs, docking and maneuvering, capsize risk, hull breach scenarios.

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Life on Sailing Catamarans vs Life on a Monohull Vessel

At anchor, a catamaran provides superb comfort and living space. The “upstairs” cockpit and salon mean that boaters can enjoy non-stop wrap-around views.  Monohull boaters are stuck in their caves and must peek out of their small portlights or climb into their cockpits to view the world. 

A modern catamaran will also have swim steps that make it easy to get on and off the boat and provide easy access to dinghies and water toys. 

If there’s an uncomfortable roll or swell in the anchorage, the catamaran’s stability will make the roll a bit less noticeable. Monohull boaters are more likely to be adversely impacted in a rolly anchorage. This does not mean that the cat owners are getting a perfect night’s sleep every evening, however. Catamarans just have a different motion in rocky anchorages, not a lack of motion.

Life at a dock gets a little more tricky for catamarans. Most marinas were built long before the catamaran trend and feature traditional slip sizes meant for monohulls. Marinas have to put catamarans on t-heads or make other accommodations. Therefore, it can be harder and more expensive to find a catamaran-friendly dock. 

Once at a dock, the massive space of a catamaran can be harder to heat and cool efficiently. Catamarans usually need several air conditioners or heaters installed, whereas a monohull can get by with only one or two. That also means that cats might need more power (50 or 100 amp service instead of 30 amp) than some marinas can provide.

Monohulls will have fewer issues finding marinas that can accommodate them, and they pay standard rates. 

When sailing in protected waters, catamarans usually speed past their monohull friends. A catamaran provides a flat ride and sailors can move around their boats easily to make sail changes as needed. Walking on a catamaran’s deck is undemanding. 

Catamaran sailors also have many options to rest comfortably underway. Because catamarans don’t heel over, catamaran sailors can sleep in their usual cabins. They can move about the interior of the boat with ease. Cooking in the galley doesn’t usually look any different underway.

In similar conditions, a monohull will heel over. Some sailors love the feeling of being heeled over and feeling the wind in their hair. Some don’t. It can be more challenging to walk the decks and work sails on a monohull vs a catamaran. While in the cockpit, monohull sailors will want to sit on one side and may even need to brace themselves to stay comfortable. For long trips, there is no doubt that living while heeled over for days at a time is exhausting. 

Moving around the interior of a monohull boat at sea is also more challenging. Monohull sailors usually sleep in sea-berths with lee cloths instead of their usual quarters. It would be very uncomfortable to sleep in a v-berth underway, as the bow may be continuously pitching in seas. The lee-cloth in the sea-berth helps keep a resting sailor in their berth instead of falling onto the floor. 

Monohull boats have gimbaled stoves. Even while the boat is heeled over, the galley stove will remain level. However, cooking in a monohull while underway is still more challenging than cooking in a catamaran since the cook needs to constantly brace themselves against the heel and rolling motion. 

At the same time, none of this is to say that catamaran sailors have it easier at sea. In reality, catamarans may be more level, but they feel every wave in the ocean twice. The result is a choppy, bumpy ride with no rhythm. It can be just as tiring as being heeled over in a monohull.  

Catamaran vs Monohull Sailing Compared

Here are just a few ways that catamarans differentiate themselves from monohulls as platforms for living aboard.

• Living space—quantity and quality
• Storage space and weight
• Budget—purchase and routine maintenance
• Maintenance
• Catamaran vs Monohull for Circumnavigation
• Docking and close-quarters maneuvering

Catamarans have significantly larger and often more attractive living spaces. On the other hand, the living space on a monohull is usually small and can be dark due to small windows.

A monohull’s cockpit tends to be small and focused on safety. Families are more likely to feel in each other’s way, and moving around while others are seated can be awkward. On a catamaran, the cockpit is likely to be large and social. Catamaran cockpits have large tables and lots of lounging space in the cockpit.

Catamarans have large trampolines forward, which provides another comfortable, social lounging space that monohulls lack. Many catamarans also feature additional lounge space via the large cockpit roof. 

The salon on a monohull is located in the main cabin. A monohull’s salon will be smaller than a similarly-sized catamaran. Often there is a small table, room for several people to sit, and a single sleeping berth. 

Catamarans feature a wide bridge deck that crosses both hulls. This large living area features great visibility, ventilation, and natural light. On some catamarans, the galley is located on the bridge deck (called “galley up”), and on others, the galley is located in one of the hulls (called “galley down”). 

Monohulls have sleeping quarters in the bow and stern of the boat. On smaller monohulls, the main sleeping area is usually a v-berth. Older, smaller monohulls usually have just one head. 

On a catamaran, the sleeping quarters are located in each hull. These cabins often feature regular-sized boat beds and large en-suite heads. Cabins on a catamaran usually offer more privacy than monohulls. 

Catamarans are popular with charter companies because large families or groups of friends can enjoy living on a boat together in style and comfort. Each will have a private cabin and a private head. In addition, if you want to find space to exercise, do yoga, or watersports, you’ll find these activities much easier and more comfortable on a catamaran. 

Catamarans have more space in general and certainly have more storage space. The additional deck space catamaran designs offer lends to easy storage for larger items, such as paddleboards and kayaks. Catamarans can often hoist and store larger dinghies than monohulls can. Large compartments make storage easy. 

However, many catamaran owners are very cautious about storing too much. Additional weight can slow down a catamaran’s performance speeds. With so much space to put things in, it’s remarkably easy to overload a cruising catamaran. Many owners complain about the performance of smaller cats, when in reality they are often just badly overloaded.

Monohulls have less space and less storage. Finding space for big items like water toys can be challenging. But monohullers worry less about weight and freely carry around their cast iron skillet collections—because weight doesn’t impact performance on a monohull nearly as much. 

This is a consideration when cruisers consider adding additional equipment. For example, a catamaran owner will have to consider the added weight of a generator and its detriment to sailing speed. In contrast, a monohull owner will have to consider finding space for the new generator. 

Some prefer the motion of a monohull while sailing. Monohulls heel over but are steady, and sailors usually get used to the heeling motion. On a catamaran, if conditions are good, the boat won’t heel and will provide a comfortable ride. 

When sailing upwind, some catamarans experience bridge deck slamming. Waves get caught between the two hulls and create a slamming motion and sound. It’s hard to predict the timing and strength of each slamming motion, so some catamaran sailors can find it tiresome. 

The amount of bridge deck slam varies from boat to boat. Catamarans with higher bridge decks will experience less slamming, while boats with bridge decks closer to the water experience more. 

Beyond that often-discussed issue, there is also the issue of the boat’s motion. It’s very difficult to imagine how different the motions are when compared to one another. The monohulls slice through the waves, usually with a predictable rhythm. A catamaran, built lightly to sail fast, feels more like it bounces over the tops of waves. The crew will feel each impact as each hull hits each wave. The result is a choppy, unpredictable motion—but it’s generally flat and level.

Monohulls have been around for ages. Therefore, sailors just starting out can find inexpensive, older monohulls. If you have a tight budget, you’ll probably start looking for a monohull.

Catamarans are newer to the market. Therefore, the initial purchase price of a catamaran is likely to be higher. Monohull buyers can often find a used, well-equipped, comfortable monohull for less than $100,000. Catamaran buyers usually spend upwards of $250,000 for a used cruising catamaran. 

Because monohulls have been produced for so long, there is much more supply. The catamaran’s more modern pedigree means that there are always fewer catamarans on the market than monohulls. As more and more customers are drawn to the attractive living space and stable sailing offered by catamarans, demand keeps going up, while supply remains low.

Besides the higher up-front costs, catamarans are more expensive to keep and maintain. A monohull usually just has one engine. A monohull might have one head (bathroom) and will generally have less equipment. Monohulls have less space and storage, after all. Catamarans have twin engines, multiple heads, more hatches—more everything. 

With more equipment, catamarans have higher maintenance costs. When a monohull owner services their engine, they have just one engine. A catamaran owner will need to service twin engines. Furthermore, each hull on a catamaran usually has separate and independent systems like bilge pumps, plumbing, fuel, water tanks, holding tanks…the list goes on. 

A monohull owner will paint one hull bottom and wax only one hull. A catamaran owner will do everything twice. Therefore, the effort and cost of maintenance are often doubled on a catamaran. 

Not only does it cost more money, it can also be harder to accomplish maintenance on a catamaran. You see, catamaran owners have fewer options to haul out. Most older boatyards have travel lifts that only accommodate boats up to 18 or 20 feet wide. Therefore, catamarans need to find a boatyard that has a large enough travel lift or a trailer to haul them. Because there is less supply and more demand for these larger travel lifts, the cost of hauling out a catamaran is often higher. 

While some monohulls have lifting or swing keels and can reduce their draft, most catamarans have a shallow draft. This allows them greater flexibility while choosing anchorages. Even if a catamaran and monohull boat choose the same anchorage, the catamaran can get closer to shore and get better wind protection. 

One final big difference between these two types of vessels is their ability to maneuver in tight spaces. Monohull sailboats are notoriously difficult to maneuver around docks and marinas. They often have poor visibility from the helm and difficult handling, especially in reverse. The single-engine design often requires a bow thruster, even on smaller boats. 

The contrast that catamarans offer is pretty stunning. Even though they appear massive and ungainly in comparison, their twin engines mounted far outboard enable them to spin in their own length. Catamarans can be maneuvered in pretty much any direction using only differential thrust from the engines–all without a bow thruster.

Safety Considerations — Are Cruising Catamarans Safe?

Since most people have only limited experience with these vessels, many people wonder are catamarans safe. Even though they have been making large cruising cats for decades now, most of us have only really played on Hobie cats at the beach. And if there’s one thing we know about Hobie cats, it’s that they’re a lot of fun until you flip it over!

Here’s a look at a few safety considerations and how catamarans stack up against monohulls. 

• Catamaran stability — capsize potential 
• Hull breaches and sinking risk
• Rigging failures
• Designing for speed
• Redundancy on board

So, can you capsize a cruising catamaran? The answer is yes, no matter what the fanboys and girls say. It is technically possible but highly unlikely. Cruising cats are massive, and in all likelihood, you’re more likely to break the rigging than flip the boat. But in rough seas and extreme conditions, it does happen even on modern catamarans.

If a monohull encounters strong winds and rough weather, it will heel and roll significantly—but it will keep righting itself. In dire conditions, the vessel could suffer a knockdown. But a monohull will always right itself after a roll—it has tens of thousands of pounds of heavy keel to ensure that it does. Of course, the rig and anything on deck will sustain serious damage in the process, but the boat will be upright in the end. 

In the same scenario, while unlikely, a catamaran can capsize. And the catamaran will then remain capsized, with no possibility of righting itself.  

One of the scariest risks at sea is that of a serious hull breach, one that a bilge pump couldn’t keep up with. For example, a boat could be holed by an errant floating object or suffer a stuffing box or through-hull failure.

If a monohull sailboat is holed, it could sink straight to the bottom of the ocean. The crew would be left with only a liferaft and whatever they were able to recover before the sinking.

But a catamaran is filled with foam and is (more or less) unsinkable. If a catamaran experienced a hull breach or capsizes, it would take on water and may become less habitable. However, it will still float. In many cases, not much of the boat is left above the water—but it’s still at the top of the water.

Boaters may be able to perform emergency repairs and get the boat to port themselves. Or, they may have to stay with their vessel until help arrives. In either scenario, the crew maintains access to supplies and can stay with a much larger vessel, increasing the likelihood of being found and rescued. 

Some catamaran sailors are so certain of their vessels floating in all scenarios that they don’t even carry a liferaft aboard. This is fool-hearty, to say the least, given the crazy and unpredictable things that can happen to any boat on the ocean. But one scenario is equally scary for the monohull or the catamaran sailor and should convince everyone that any offshore vessel should have a liferaft—the possibility of an uncontrollable fire.

Rigging Safety

When wind speed increases, a monohull will heel over. This heeling motion sheds the excess power of the wind. Monohull boaters should pay attention to the weather and reduce sail to ensure they aren’t overpowering the boat. This is why knowing how to reef a sail is so important for all sailors.

However, on a catamaran, the sails and rigging take the increased load when wind speed increases. Catamarans don’t heel, and therefore, don’t shed excess power. If the weather becomes gusty and a catamaran has too much sail up, all that extra power is transferred to the sails and rigging.

This can cause a dangerous situation. For example, there have been reports of catamarans being de-masted in sudden gusts of wind. In a worst-case scenario, a catamaran could capsize if they are over-canvassed when experiencing extreme wind conditions.

Most monohulls have strong standing rigging. The forestay is connected to a solid structure, the hull. This means that the forestay has a strong, stable platform and gives a monohull better upwind performance. Monohulls also usually have backstays, which provide rigging redundancy.

On a catamaran, the forestay is attached to a crossbeam. Because the platform is not as rigid as a monohull’s hull, the forestay is not as strong. In addition, catamarans usually don’t have backstays, and therefore have less rigging redundancy. 

The configuration of the rigging is another rigging consideration. On a monohull, the spreaders and shrouds are perpendicular to the mast. Most catamarans come with fractional rigs that don’t have backstays, and their shrouds are set far back. Because of this configuration, catamaran sailors can’t let their mainsails out all the way on a downwind run because the shrouds are in the way. This leads to less efficient sail shapes when sailing downwind.

However, catamaran sailors can rig their sails to sail wing-on-wing. While monohull sailors can also use this configuration with the help of a whisker pole, catamaran sailors have a nice, wide, stable platform to fly large downwind sails. 

There’s no doubt about it–catamarans sail faster. Most articles and comparisons state that catamarans are about 20% faster than a similarly sized monohull. Catamarans have a lower wetted surface area and less drag than monohulls. They’re especially nice to sail in light winds, conditions that heavy cruising monohulls tend to not do well in.

While most cruising cats can’t sail upwind as high as monohulls can, they still win the race. However, if a catamaran has daggerboards and a good sail inventory, it can point as well as a monohull. 

Many boat owners believe that speed equals safety, as you might be able to outrun an impending storm. That’s a debatable strategy since weather systems often move faster than any cruising boat can move. It has a lot more to do with planning and the decisions made by the skipper, in the end. 

Furthermore, more speed means a rougher ride. A heavy, full-keeled monohull might not move very fast, but the sea-kindly and forgiving ride means a more comfortable and better-rested crew. This only goes to illustrate that the “more speed” argument is far more of a personal preference than many sailors admit—especially when it comes to long-distance cruising.

A faster boat provides a skipper with more options, but it does not ultimately equal inherent safety. That will always come down to the skipper and the crew, and the choices they make. A slow boat in the hands of an experienced and careful crew will always be safer than a fast racer under the command of an inexperienced and green crew. In other words, there is no replacement for seamanship and careful planning.

Catamarans have two of everything. While this does equal double the cost and maintenance, it also provides redundancy. If a monohull’s single engine dies and there is no wind, they may have to call for a tow or wait for wind. If a catamaran’s left engine dies, sailors can just continue on the right engine. 

Twenty years ago, the majority of boats completing circumnavigations were classic bluewater monohulls. Monohulls are considered safe and capable circumnavigators.

But today, catamarans are establishing themselves as the more desirable choice for many circumnavigators. Catamarans are fast, stable, and capable of crossing oceans. In addition, catamarans can carry significant supplies and offer redundancies. Plus, the extra space that catamarans provide also means that the crew will enjoy watersports like diving, paddle boarding, and surfing. 

Since nearly all traditional routes are downwind “milk runs,” catamarans naturally excel along the way. If you take a look at the competing boats for the World ARC rally for the last few years, a definite trend is growing. More catamarans compete every year. Common entrants include Lagoon 450s and Antares 44s.

One of the most significant decision points when thinking about catamarans versus monohulls is your budget. If your budget is under $100,000, a monohull will be your best bet. If your budget is between $100,000 and $250,000, you can consider a smaller, older catamaran. Catamarans such as PDQs, Prouts, and Geminis will be in your budget. If you have a budget of over $250,000 and can afford higher dockage and maintenance costs, you can consider a catamaran.

Next, consider your comfort level. To try it out, you might want to charter both a monohull and a catamaran. Check out a sailing vacation in the BVI or with a company like Cruise Abaco. Taking classes at our local sailing school might also be helpful. https://cruiseabaco.com

Many folks are attracted to the larger, more comfortable spaces of a catamaran. However, some people feel more seasick on a catamaran and can’t get used to the motion.  So a lot of your decision will come down to personal preference. 

If you can’t imagine squeezing into a darker, smaller cabin in a monohull, then a catamaran might be calling your name. On the other hand, if you are a traditionalist who loves heeling and boats with a lot of teak, a monohull might be your dream boat. It’s just impossible to know how a boat will make you feel until you’ve experienced both.

Boaters often discuss the compromises involved in boat choices. Whether you choose a monohull or a catamaran, there will be some compromises involved. However, no matter which boat you choose, you can enjoy smooth sailing, beautiful anchorages, and some adventure along the way.

Worried about getting caught in severe storm conditions in your boat ? Visit our guide!

Which is better monohull or catamaran?

Both monohulls and catamarans are popular choices for cruising sailors. Which one is better depends entirely on your personal preferences and which boat is more comfortable and appealing to you. If you are on a tight budget, a monohull is your best choice. On the other hand, if you love large open living spaces, a catamaran will be the better option.

Which is safer catamaran or monohull?

When wondering are catamarans safe, always remember that the primary determinant of the safety of a vessel is its captain, not the vessel itself. Both monohull sailboats and cruising cats have important limitations that their skippers must know and abide by. 

Some consider catamarans safer because they are virtually unsinkable. If it has a hull breach or capsizes, it will still float. 

Others see the sea-kindly monohull to be the safer bet, as they are better designed to protect their crews from the elements in severe weather. They also cannot capsize, as their ballast provides a righting moment in all conditions. But on the other hand, if a monohull experiences a hull breach, it can sink.

Can catamarans handle rough seas?

Modern cruising catamarans are built strong enough to cross oceans and survive in all kinds of conditions. It might be an uncomfortable ride, but not an unsafe ride. In the end, it is the skipper of the boat who ensures its safety at sea. Good seamanship makes a far bigger difference in how a boat handles rough seas than the design of the boat does. 

In extreme conditions, such as hurricanes or sudden gusty winds, catamarans can capsize. Once a catamaran has capsized, it won’t right itself. However, it will still float, although upside down. Heavy seas are more likely to cause maintenance and chafing issues on both catamarans and monohulls.

Matt has been boating around Florida for over 25 years in everything from small powerboats to large cruising catamarans. He currently lives aboard a 38-foot Cabo Rico sailboat with his wife Lucy and adventure dog Chelsea. Together, they cruise between winters in The Bahamas and summers in the Chesapeake Bay.

Catamaran vs Monohull in Rough Seas: Which is Better?

Catamarans and monohulls have different designs that affect how they handle rough sea conditions. In fact, they have an advantage over each other when sailing in heavy seas. Let's try to compare each type of vessel based on their performance, design, and stability, to help you decide which can give you a safer and more comfortable journey on the open water.

Regarding speed, efficiency, and stability, a catamaran may be the better option for you. Because they have twin hulls, they are more comfortable to sail in rough seas. A monohull can become more advantageous in rough seas when sailing upwind since it can point higher into the wind and can handle strong winds easily.

Catamarans with two rudders also allow for better control and maneuverability in rough seas compared to monohulls, which only have one rudder. Let's look at more of the comparison between these two types of boats when sailing through big waves in the sea.

• When it comes to stability and comfort, catamarans can provide more stability. They are also less likely to cause seasickness and offer more living space and privacy.
• In terms of speed, catamarans are also faster than monohulls because they have a smaller displacement. Their structure also makes them less likely to capsize or sink.
• A monohull is advantageous when it comes to sailing upwind, and handling stronger winds. Their deep keel also provides them with increased stability and reduces drag, which can be an advantage in rough seas.

Catamarans Vs. Monohulls in Rough Seas

If you're planning to buy a boat, and you're deciding whether to go for a catamaran or a monohull, one of the many things you may need to consider is how they perform in rough seas. Rough seas can be challenging for any vessel, but some boats are better equipped to handle them than others. Below is a table summarizing how well these boats perform in rough seas:

A catamaran is a boat with two hulls connected by a deck. Because they have two hulls , catamarans are known for their speed, stability, and spaciousness. They are often used for cruising and chartering, as well as racing. They also have a wider beam than monohulls, which means they offer more living space and stability. They are less likely to heel or tilt to one side, are more buoyant, and have a shallow draft.

On the other hand, monohulls are the most common type of boat with only one hull. They are known for their simplicity, versatility, and affordability. Monohulls are often used for day sailing, racing, and cruising.

When it comes to rough seas, catamarans are generally more stable than monohulls in terms of roll stability. Monohulls, on the other hand, are better at handling heavy seas and high winds, but they can be more prone to rolling and pitching, and can significantly heel more than a catamaran.

If you are aiming for speed, efficiency, and stability, then a catamaran may be the better option for you. They are generally faster and more efficient due to their twin hulls, and their stability can make for a more comfortable ride in rough seas.

On the other hand, if you prioritize upwind sailing performance, sailing feels and responsiveness, and the traditional look and feel of a sailboat, then a monohull may be the better option for you. Monohulls sail closer to the wind and have a unique feel to them that some sailors prefer.

Detailed Comparison Between Catamaran And Monohull

Catamarans provide better stability and comfort

Catamarans are more stable, less likely to cause seasickness and offer more living space and privacy. Below is a table summarizing why catamaran is more advantageous in this category:

In terms of motion in rough seas

Catamarans are more stable in rough seas because they have two hulls instead of one. This means that they are less likely to roll or heel, which can make for a more comfortable ride. Monohulls, on the other hand, tend to pitch and roll more in rough seas.

In terms of handling seasickness

If you are prone to seasickness, a catamaran may be a better choice for you. The stability of a catamaran means that it is less likely to cause seasickness than a monohull. Additionally, the living space on a catamaran is often spread out between the two hulls, which can help to reduce the feeling of confinement that can contribute to seasickness.

In terms of living space and privacy

Catamarans also tend to offer more living space and privacy than monohulls. Because the living space is spread out between the two hulls, each hull can function as a separate living space. This can be especially beneficial if you are traveling with a group of people and want to have some privacy.

Both boat types have specific advantages in performance and speed

A catamaran is generally faster and more stable than a monohull, but a monohull can be easier to handle in certain conditions.

In terms of navigating upwind

When sailing upwind, a monohull has the advantage over a catamaran due to its ability to point higher into the wind. This means that a monohull can sail closer to the wind than a catamaran, which will need to tack more often. However, a catamaran can make up for this disadvantage with its speed. A catamaran can sail faster than a monohull , which can help it to cover more distance in less time.

In terms of handling strong winds

In strong winds, a catamaran is generally more stable than a monohull due to its wider beam. This means that a catamaran is less likely to heel over, making it more comfortable for passengers. However, a monohull can be easier to handle in strong winds due to its ability to reef the sails. By reducing the sail area, a monohull can reduce the amount of wind it catches, making it easier to control.

Catamarans and monohulls have different designs and function

Catamarans offer more deck and cabin space, shallow draft, and increased buoyancy, while monohulls have a deeper draft, reduced drag, and increased stability.

In terms of the deck and cabin space

One of the advantages of catamarans over monohulls is their wider beam, which provides more deck space. This means more room to move around and increased stability, which is important in rough seas.

Additionally, catamarans usually have two hulls, which means more cabin space and privacy for the crew and passengers. On the other hand, monohulls have a single hull, which means less deck and cabin space. However, monohulls usually have a deeper draft, which allows them to sail closer to the wind and tack more efficiently.

In terms of draft and buoyancy

Catamarans have a shallow draft, which means they can sail in shallow waters and anchor closer to shore. This makes them ideal for exploring shallow coves and bays. Also, catamarans have two hulls, which provide increased buoyancy and stability in rough seas.

Monohulls, on the other hand, have a deeper draft, which makes them less suitable for shallow waters. However, their deep keel provides increased stability and reduces drag , which can be an advantage in rough seas.

Both boat types have unique safety considerations

Safety is a top priority when sailing in rough seas. Catamarans are generally more stable and easier to control, while monohulls have a greater risk of capsizing but are also more maneuverable in certain situations.

In terms of the risk of capsizing

One of the biggest safety concerns when sailing in rough seas is the risk of capsizing. Catamarans have two hulls, which make them more stable than monohulls. This means that they are less likely to capsize in rough seas. Catamarans are also technically unsinkable , meaning that they will not sink even if one hull is damaged or flooded.

On the other hand, monohulls have a keel and ballast, which provide stability but also increase the risk of capsizing. If a monohull capsizes, it can be difficult to right the boat and prevent it from sinking.

In terms of navigational control

Catamarans have two rudders, which provide additional control and maneuverability in rough seas. This means that you can steer the boat more easily and avoid obstacles like rocks and other boats. Meanwhile, a monohull only has one rudder.

However, despite the number of rudders involved, the ability to control and maneuver the boat, whether a catamaran or a monohull, still depends on the design and construction of the boat, as well as the skill of the captain and crew in handling the boat.

Other practical considerations when choosing between catamaran and monohull

In terms of docking and anchorage.

Docking and anchorage can be easier with a catamaran due to the wider beam, which provides more stability. However, catamarans can be more difficult to maneuver in tight spaces due to their size. On the other hand, monohulls are generally easier to maneuver in tight spaces, but they may be less stable in rough seas.

For docking costs, catamarans tend to have higher docking rate costs due to their size and wider beam. Read this article to know more about the costs of docking a catamaran in different locations.

In terms of storage and equipment

Catamarans typically have more storage space than monohulls due to their wider beam and larger deck area. This means they can carry more gear and supplies, making them a good choice for longer voyages or liveaboard situations. They can accommodate larger equipment such as dinghies, kayaks, and paddleboards - making them a great choice for water sports enthusiasts who want to bring their gear along.

Monohulls, on the other hand, have less storage space due to their narrower beam and smaller deck area. This means they are better suited for shorter trips or day sailing, where less gear and supplies are needed. Monohulls may also be better suited for certain types of equipment, such as fishing gear or diving equipment, due to the layout of the boat.

In terms of crew accommodations

Catamarans tend to have more spacious accommodations than monohulls, which can be an advantage for longer trips or when traveling with a larger crew. However, monohulls may offer more privacy for individual crew members due to the separate cabins and tighter quarters.

Catamarans generally have more living space than monohulls so they can offer more room for sleeping, lounging, and cooking, which can be especially beneficial for larger crews or families. They also often have large, open salons and cockpits that allow for easy socializing and entertaining. This can be a great feature for crews who enjoy spending time together.

Monohulls, on the other hand, have less living space than catamarans due to their narrower beam. This means they may be better suited for smaller crews or shorter trips. They often have cabins located closer together, which can make it easier to communicate and work together as a crew, which is a plus for racing or cruising in crowded areas.

Choosing boat type based on personal preferences

In terms of aesthetics and personal taste.

One of the first things that come to mind when choosing between a catamaran and a monohull is aesthetics. Both types of boats have their unique look, and it is up to personal preference which one you find more appealing. Some people prefer the sleek and modern look of a catamaran, while others prefer the classic look of a monohull.

Another thing to consider is personal taste. If you are someone who prefers a more spacious and open boat, then a catamaran might be the right choice for you. On the other hand, if you prefer a more traditional sailing experience, then a monohull might be the better option.

In terms of suitability for families and couples

Basically, catamarans are known for their stability and spaciousness, making them a great choice for families with children or couples who want to have more space and privacy.

Monohulls, on the other hand, might not be as spacious as catamarans, but they offer a more traditional sailing experience. If you are a couple or a small family who wants to experience the thrill of sailing and doesn't mind being in close quarters, then a monohull might be the right choice for you.

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Catamarans - Monohulls: Pros and Cons

With catamarans vastly popular in the charter industry, and showing no sign of abating, let's compare the pros and cons of monohull and catamaran strictly on the charter work point of view . The reason why this distinction is important – and I write this as a monohull fanatic myself - is because for charter companies, catamarans are in huge demand due to the overwhelming number of advantages they offer. Out of charter use, there is no question for me that, when the offshore going gets tough, I would much rather be on a solid monohull than on a catamaran - although the catamaran builders have come a long way to strengthen comstruction. But this is just a matter of opinion!

Catamaran Pros

On deck The cockpit, highlight of catamarans, is usually huge, since it spans over both hulls. The cockpit and the salon are on the same level, which enhances the feeling of light and spaciousness, along with the typical huge panoramic windows. The foredeck area is very large as well and sports a big pair of nets between the hulls, the notorious trampolines, which make a great sun bathing area. In any case, it is a great observation spot and a kids' favorite. As a result of this roominess, a catamaran rarely feels crowded, as it is relatively easy to get some seclusion and quietness from other members of the party. Most cats are equipped with dinghy-davits at the transom, which is absolutely great: no more towing the dinghy, thus no more drag on the boat speed.

Down below The catamaran will provide you with considerably more room than a monohull almost everywhere on the boat: in the cabins and in the salon. Besides, there is ample headroom everywhere. A typical 43/47 ft. cat will have 4 large staterooms, with rectangular queen-size beds – no more of those pointy beds! - each with en-suite bathroom. A 38 to 42ft. will have 3/4 staterooms and 2/3 bathrooms. Most cats have an enormous salon/cockpit combination capable to entertain about 20 people in style! Because of the cats’ layout configuration, there is full privacy in every cabin and one does not hear anything from one cabin to the other.

Stability The key fact is that catamarans have a phenomenal stability: they do not heel under way and do not roll at anchor. This usually makes seasickness a non-event. Incidentally, it makes it somewhat safer for kids running around. Whether at anchor or under way, a catamaran is always much more stable than a monohull. Stability is also a good factor for elderly people and/or first time sailors. As a matter of fact, a catamaran will give the latter an excellent impression for their first cruise, instead of memories of being seasick!

Speed & maneuverability There is no question that catamarans are faster under power or sail. Whatever your cruising goals are, catamarans will usually move you about more quickly than a monohull. Catamarans have shallow drafts. This means catamarans can get into places monohulls yachts often cannot reach, and that they can also anchor closer to shore. However, more and more charter cats now have small "sacrificial" keels to improve close-hauled performance. Lastly, I personally enjoy the phenomenal maneuverability of the cats. With 2 engines spread apart, you can pivot a cat of any size literally around the boat's central axis – and without the help of the rudders. The autopilot works particularly well on cats, on a tracking standpoint.

Catamaran Cons

A hard-core monohull sailor once said: "When I sail a cat, it feels like I am driving my living room!" He meant that a cat does not convey the "real" feeling of sailing, with the "rail in the water" as sailors say. That is precisely because a cat does not heel, whereas a monohull does, and sometimes a lot. So if you are in for hard, pure sailing, you will not get that felling on a cat. Only a monohull will give you the full experience!

A cat does not typically sail well upwind and needs a different technique for tacking and anchoring. ( See tips for cat handling ).

It is often said that anchoring a catamaran can be more difficult. This is due to the fact that catamarans have more “windage” than monohulls, and, without keel and ballast, they have a tendency to “bob” on the water when a gust hits. ( See tips for cat anchoring )

Obviously, catamarans take up twice as much docking space as monohulls. This can be a bit of a problem in chartering areas where spending nights in marinas is a necessity.

If you are bringing with you a party of first-time sailors, or older people, or people who could feel apprehensive at sea, you probably will better off with a cat.

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How Fast Do Catamarans Go?

Last Updated by

Daniel Wade

August 30, 2022

‍ Catamarans are known for their speed, and some vessels are fast enough to break world sailing speed records.

Catamarans can go between 15 and 30 knots, with the fastest achieving speeds well in excess of 60 knots. Sailing catamarans are sometimes twice as fast as monohulls and cut through the water with greater efficiency.

In this article, we’ll cover how fast catamarans can go based on factors such as size, sail area, and design category. Additionally, we’ll compare catamaran speeds to monohulls and trimarans and cover the reasons why multi-hull sailboats blow monohulls out of the water.

We sourced the information used in this article from sailing guides and hull speed calculations. Additionally, we sourced information directly from the manufacturers of common catamarans.

Table of contents

‍ Catamaran Speed by Type

Catamaran design can be split into different categories. After all, different vessels are designed for different tasks, as speed isn’t always the most important design consideration.

The fastest type of catamaran is the ultralight racing catamaran. These vessels have extremely narrow hulls and a remarkable planing ability. They’re designed to pierce waves and often achieve speeds in excess of 45 knots or greater, depending on conditions.

The second fastest catamaran variety is the sport catamaran. Sport catamarans often include a fairly good level of creature comforts in the cabin. They’re technically hybrid designs, because they are envisioned as a combination between a racer and a cruiser. Sport catamarans can achieve 30 knots or greater.

Cruising catamarans are designed primarily for safety and comfort. They’re often used for long offshore passages, where speed is important, but comfort is king. Despite their accommodations, cruising catamarans can still achieve a respectable 15 to 20 knots of speed—sometimes 50% faster than similarly-equipped monohulls.

Why are Catamarans So Fast?

Catamarans are remarkable vessels that can achieve amazing speeds. As a result of their unconventional design, typical calculations for hull speed (such as those used for monohulls) don’t always apply.

But what makes catamarans so much faster than equivalent monohulls? The first and most obvious speedy design element are the hulls themselves.

Catamarans don’t have a deep keel or a centerboard. This is because the second hull acts as a stabilizing device, and it helps the vessel track straight. The lack of a keel reduces weight (and equally important). It also reduces drag.

Additionally, catamarans behave in strange ways while underway. The hulls have a tendency to rise out of the water further the faster they go. This further reduces drag and makes it easier for the vessel’s speed to climb once it starts to move.

One additional characteristic is how the vessel’s sails point relative to the wind. Catamarans keep their sails perpendicular to the wind, which allows them to harness energy more efficiently. This is because, at a perpendicular angle, less wind energy is lost by spillage over the edge of the sails.

Are Catamarans Faster than Monohulls?

Yes, catamarans are typically faster than monohulls. They’re also a lot more stable, as their spaced-out hulls provide better motion comfort in rough seas. Catamaran hulls are narrower than monohulls, which also reduces drag and increases speed.

Catamaran vs. Monohull Speeds

We know that catamarans are faster than monohulls in most situations. But how much faster are they? Here’s a table of hull speeds for monohulls, which is a useful reference when comparing speed. Hull speed isn’t the absolute fastest that a boat can go, but it’s a good practical estimate for understanding the hydrodynamic limitations of single-hull designs.

Hull speed calculations for catamarans are more complicated. This is because catamarans have a greater length-to-beam ratio. And due to their narrow hulls and open center, they aren’t affected by the same hydrodynamic drag forces that monohulls are limited by.

For example, a 55-foot monohull sailboat with a waterline length has a hull speed of 9.4 knots or 10.9 mph. Its actual speed could exceed that in the right conditions, but rarely by more than a few knots.

Compare that to an efficient 51-foot catamaran, which can easily achieve speeds in excess of 20 knots in reasonable winds. That’s more than double the hull speed of a monohull with a similar waterline length and proves that catamarans operate under a completely different set of rules.

Wave Piercing

One aspect of catamaran design that makes them superior speeders is their ability to pierce waves. Specially designed catamarans have minimal buoyancy at the bow, which allows them to slice through waves instead of going over them.

This increases the speed at which catamarans can cover the distance. Think about it—a boat going over a wave has to use more energy to reach the same destination, as the height of the wave almost makes the distance further.

It’s like walking over a hill or on flat ground—you’ll take more steps walking up and down the hill than in a straight flat line. Wave piercing catamarans enjoy better stability, and they ‘take the flat road’ to a greater extent than monohulls.

Do Catamarans Plane?

Planing is when a boat’s hull rises out of the water due to hydrodynamic lift. This increases speed and efficiency, as there’s less drag but sufficient contact for stability. It also reduces rolling, as the bow only contacts the taller portions of the waves.

Catamarans have planing characteristics, but they generally don’t plane as dramatically as powerboats. This is still worth noting, as catamarans are specifically designed to use the phenomenon of hydrodynamic lift to gain speed and efficiency.

You’ll visibly notice a catamaran’s hull rising out of the water as it increases in speed. Compare that to a displacement monohull design (such as a classical cruising sailboat with a deep keel), which won’t rise out of the water in any significant way.

Are Catamarans Faster than Trimarans?

A trimaran is a catamaran with an additional hull in the center. Trimarans are usually less common than catamarans, but they have some of the same design benefits as other multi-hull sailboats.

At first glance, it would seem logical that trimarans are slower than catamarans. After all, they have an extra hull in the center, which likely increases weight and drag. However, there are more important factors at play here.

Trimarans are almost universally faster than catamarans. This has to do with weight distribution. Trimarans center their weight over the middle hull, using the outer hulls primarily for stability. This allows them to reap the benefits of a catamaran while increasing the efficiency of the wind power it captures.

Fastest Catamarans

Catamarans are popular for racing. There are several world records held by catamarans and numerous production boats with especially impressive speed-to-size ratios. Here are a few of the fastest racing and production catamarans ever built.

Fastest Sailboat Ever—Vestas Sailrocket 2

The Vestas Sailrocket is a specialized racing boat designed only for speed. This incredible vessel is actually the fastest sailboat ever built—and no wonder it’s a catamaran. A monohull simply can’t achieve record-breaking speeds when put head-to-head with a lightweight multi-hull.

The vessel, which earned the world sailboat speed record in 2012, has a modest 150 to 235 square feet of sail. Nonetheless, it managed to achieve a remarkable top speed of 65.45 knots in only 25 knots of wind. That’s about 72 miles per hour—in a sailboat.

Soon, a team of Swiss engineers will release their own version designed to beat the 65-knot speed record. Their vessel, which is a hydrofoil, will attempt to hit an incredible target speed of about 80 knots.

Outremer Catamarans

But what about production catamarans? How do they stack up, and how fast can they go? French boat builder Outremer Catamarans builds some of the fastest production catamarans ever built. These are not specialty racing boats—in fact, they’re average-sized cruising catamarans.

Let’s use the larger Outremer 51 as an example. This high-end cruising cat is known for its almost outrageous speed capabilities. In ideal conditions, owners of the Outremer 51 have reported speeds exceeding 20 knots for extended periods.

That’s a production catamaran with speeds that rival 20th-century warships. With such a fast boat, the world’s oceans start to appear a lot smaller. Plus, the genius design of the Outremer 51 allows it to be crewed by just two people.

But how do Outremer catamarans achieve such high speeds? The secret is in precise engineering and hull design, along with a sail plan that’s perfectly catered to the vessel. The hulls are sleek and narrow and designed to cut through the water with minimal drag.

From the bow, the Outremer 51 hulls look paper-thin. They increase in width gradually, which eliminates areas of sudden drag. These narrow hulls evenly distribute the vessel’s 21,825-lb displacement. Its low-buoyancy bows reduce drag and blast through waves instead of riding over them.

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I've personally had thousands of questions about sailing and sailboats over the years. As I learn and experience sailing, and the community, I share the answers that work and make sense to me, here on Life of Sailing.

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Catamaran vs monohull

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A Catamaran sailboat has become a very popular type of boat to charter, offering comfort and a laid-back experience. But if you’re more interested in traditional sailing, you might want to consider a monohull sailboat. Adrenaline seekers will also have more fun sailing a monohull, especially under full sails. Read on to find out more about the difference between catamarans and monohulls.

Catamarans 

A catamaran hull is the water tight body of the boat that allows it to float. Catamarans are multi-hulled vessels, which means they combine two or more hulls, also known as pontoons. A catamaran’s two-hull design offers a higher degree of stability and comfort in comparison to a monohull boat, which also helps in reducing seasickness. Catamaran sailboats are propelled by the wind, and can travel a lot faster than traditional sailing boats due to the needle-like monohulls or multihulls. A catamaran charter offers a great balance between sailing performance and comfort. 

A Catamaran yacht offers more space both on deck and inside, making it an ideal choice for larger groups. A no sail catamaran, i.e. power catamaran, often offers a grand sundeck and sky lounge with a panoramic view of the sea. It also allows easy access to the water through the stern of the catamaran, which is great for all kinds of watersports. Catamarans offer a good level of stability thanks to the two hull design.

You don’t have to be a professional sailor to maneuver a catamaran. Its twin propellers and light weight make it very easy to handle. A catamaran sailboat usually has a smaller draft and is able to sail in shallow bays or closer to the beach. Another advantage of catamarans is that they have two separate engines which allow you to easily turn the boat around, and can come in handy in the unlikely event one of the engines fails. Catamaran sailing is as dangerous as sailing any type of sailboat if not handled properly, but if you’re a skillful sailor or have a knowledgeable skipper onboard, sailing a catamaran is a walk in the park. 

Some monohull sailors claim that sailing a catamaran isn’t an authentic sailing experience. Unlike a monohull boat, catamarans won’t heel, which might be seen as a disadvantage if you’re a thrill seeker. Catamarans can be difficult to anchor, and take twice as much docking space as a monohull. Although catamarans are fast when sailing downwind, monohulls can be faster sailing upwind. Catamarans are usually more expensive to buy or rent and to moor and dock than monohull sailboats, but they do offer a lot for their price.

Monohull sailboats

Monohull sailboats are the most widespread type of boats out there. An important characteristic is their stability. A monohull sailing boat is almost impossible to capsize, making it extremely safe at sea. This stability is provided by the keel and ballast. 

Sailboats are mostly equipped with one mast and two sails, but depending on the size of the sailboat can have more. The front sail can be rolled up and is called the genoa, jib, (genny jib) or rolfok. The rear sail is the main sail and can either be a conventional sail that is hoisted up the mast or a roll main sail that is rolled into the mast. 

A big pro many monohulls have compared to catamarans is that when in motion they don’t pound or slap against the water. Catamarans with low bridge deck clearance from the water tend to hit and slap on the undercarriage in lumpy seas when sailing upwind. This can sometimes feel as though the boat is getting a beating.

When not using the sail, monohull sailing yachts are propelled by just one engine which can combine with a bow thruster on the front. The bow thruster is a small electric engine on the bow of the yacht that moves the bow sideways with the press of a button, making it easier to maneuver in tight spaces. 

Sailing boats range in size from the smallest with only one cabin, such as the Seascape (a sailboat commonly used for sailing courses), to medium sized sailboats with two cabins, to the largest with six cabins. The saloon is used as a dining area and common room and can also double up for sleeping. If the saloon is used for sleeping, the table folds away and combines with the bench to create a large double bed.

Catamaran vs monohull charter options 

A catamaran charter can be expensive. Prices vary depending on when and where you are chartering the catamaran, and also the age and model of the boat. There are two catamaran rental options:

• A sail catamaran, propelled by sails
• A power catamaran, powered by an engine. 

A power catamaran can reach higher speeds, and often offers more space than a sail catamaran. The no-sail design offers more space and a better panoramic view of the sea, with no sails to block the view. 

Skippered vs bareboat

A bareboat charter is a sailing boat rental that you sail by yourself, without a skipper or any crew members. You are in charge of everything, from navigation, sailing and mooring to cooking and cleaning. At least one member of your group must be an experienced sailor with a valid licence. Bareboat sailing is also the cheapest option. Bareboat charters offer the freedom to explore the sea wherever and whenever your heart desires. It’s a great way to have a truly unique holiday.

If comfort and relaxation are top priorities on your vacation, you might want to consider a skippered charter. You won’t need a license and your skipper will steer the boat, decide on the best route and keep you safe! Skippers are carefully chosen individuals that aren’t only known for their sailing skills and experience, but also for being very knowledgeable about the area and destinations you’ll be visiting. They often act as your personal local guide. On top of all that your skipper will share tips on how to become the best possible sailor. Skippered sailing charter is the best option for less experienced sailors.

Catamaran vs monohull: interiors and layouts

Catamarans have an eye-catching exterior due to their two-hull design, but are also very impressive on the inside. On the exterior they have a flybridge with a helm station, offering 360-degree views of the sea, a spacious main seating area, and an easily accessible sunbathing platform. Layouts are often open, with a well-equipped L-shaped galley connected to a dining area consisting of comfortable seating and a table. Behind the seating, there are usually glass doors that open to an aft cockpit where you can watch sunsets and sunrises. Below deck, you’ll find cabins with double beds and bathrooms. All in all, a catamaran’s biggest advantages are its open layout and awesome panoramic views you can enjoy from every part of the boat.

Here are your catamaran options:

• 3 cabin catamaran - ideal for three individuals or three couples. This cat comes with a kitchen, sitting area and a few restrooms.
• 4 cabin catamaran - this cat includes a sitting area, multifunctional kitchen, four bedrooms and a few restrooms.
• 5 cabin catamaran - this cat comes with four larger bedrooms and one smaller one. It has a bigger kitchen and a large sitting area with a nice deck where you can enjoy dinner under the stars.
• 6 cabin catamaran - this cat offers large bedrooms and a big deck.
• 7 cabin catamaran - king’s catamaran offering maximum comfort for you and your crew. Comes with a fully equipped kitchen and a large beautiful deck.
• 8 cabin catamaran - traveling in a large group, or part of a big family? We’ve got you covered with the largest catamaran in our fleet, this cat is the definition of comfort and is called a ‘house on water’ for a reason!

Monohull interior options:

• 1 cabin sailboat - ideal for couples and adrenalin lovers. This sailboat wasn’t built for long travels. It comes with one restroom and a small kitchen.
• 2 cabin sailboat - great for couples with children. Comes with a comfortable lounge area.
• 3 cabin sailboat - if you have two or more children, this is the perfect choice for you! Comes with two restrooms, a kitchen and a lounge area.
• 4 cabin sailboat - if you’re spending your holiday with friends and family, this is the right choice for you. It comes with a big sitting area, two restrooms and a big kitchen.
• 5 cabin sailboat - big kitchen, grand sitting area and three restrooms make this sailboat ideal for larger groups.
• 6 cabin sailboat - king of our sailboat fleet. If you’re looking for uncompromising comfort this is the sailboat for you!

Best catamaran and monohull destinations

Whether you’re a seasoned sailing purist who will never abandon your loyalty to monohulls, or a catamaran fan prioritising space and stability, all sailors can agree on one thing – there’s no such thing as a bad day on the water. Every experience is different from the last, and the opportunity for new adventures is infinite. There’s certainly no shortage of phenomenal places to sail to, but here are a few of our favourites:

• Mediterranean - the picturesque and idyllic landscape of the Mediterranean, with plenty of ports and favorable winds, attracts sailors all year round. Famous destinations are the Balearic Islands, the Amalfi coast and the Ionian Islands. 
• British Virgin Islands - known as the mecca for sailing, with its numerous islands that are rich in culture. Its weather conditions make it ideal for sailing all year around.
• Caribbean - warm winds, crystal clear water and the reflection of the moon on the midnight waves make the Caribbean a unique destination for sailing enthusiasts.    

In conclusion

The choice of a monohull vs catamaran comes down to a personal preference and budget. If you’re traveling with a large party or you want an easy laid-back experience, catamarans are the way to go. If you’re looking for an adrenaline-rushed adventure, a monohull might suit you better.

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We get these questions all the time: Are catamarans and trimarans really superior to monohulls? In what ways? Does it matter to me? What are the key differences between catamarans and trimarans? Here are the basics:

Reefing: Sailing catamarans and, to a lesser extent, trimarans too, require vigilance when it comes to reefing. Since they don’t heel much, almost all additional wind force is converted to load on the rig. That’s where the speed comes from. But since the pressure on the sails quadruples as the wind speed doubles, crews must keep an eye on the weather and reef in good time to keep the boat safe and sailing flat. In fact, a properly reefed cat or tri will sail faster too, in freshening breezes. All manufacturers supply written guidelines denoting apparent wind speeds that require additional reefing.

Safety – Unsinkability There are many aspects to safety where catamarans and trimarans shine. Often overlooked is the safety margin introduced with level sailing (see above). It is much easier to keep crew aboard in rough weather when the boat stays level and is pitching less. Large cockpit spaces keep crew well away from the lifelines as well.

The speed of a multihull is another safety factor, as with decent weather information it’s relatively easy to sail around severe weather systems before they can bear down on you. Should something go horribly awry, and the boat get flipped (VERY rare – see below), the lack of ballast, and additional positive flotation, means that nearly every catamaran and trimaran produced in the last few decades will remain on the surface of the water, rightside up or not, until a rescue can be made. Nearly all cruising cats and tris have a substantial amount of reserve buoyancy, in the form of closed-cell foam, stashed in the nooks and crannies of the boat. Because of this, most could literally be cut into pieces and all pieces would still float. This makes fire your biggest safety concern aboard a cat. And the anchor windlass, but that’s a story for another day.

Can my catamaran or trimaran flip over? This is theoretically possible, and has happened in very rare heavy-weather situations when EVERY vessel is in distress. It takes very high winds, too much sail (see reefing, above), and large breaking waves to flip a modern cruising cat or tri. Multihull sailors find it reassuring to know that their cat or tri will remain on the surface, as a big liferaft and spotting target, while ballasted monohulls caught in the same situation are more likely to end up on the bottom of the sea, with their crew bobbing around (if they are lucky) in an inflatable liferaft.

Motoring Performance/Maneuverability Cruising catamarans and trimarans, with their easily driven hull forms and light weight, enjoy excellent fuel efficiency when compared to monohulls, and track very straight. Cats almost always have twin engines, set many feet apart, which allow for tremendous control in tight situations. In fact, the boat can be spun in place or crabbed sideways without any way on. Try that on a monohull. Prop walk is minimal or nonexistent as well, and the redundancy of a second engine is appreciated should a mechanical issue arise underway. Nearly all trimarans have just one engine, so the differences there are slight.

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Monohull Vs Multihull

There has been a debate in the world of sailing foe some year over monohull vs multihull. Is one superior? What are the benefits and drawbacks of each? It’s a layered question and both have some great upsides and a few downsides. Is one better? That’s likely up to the individual sailor. But we can help you make that decision by breaking down each one.

What are Monohull Sailboats?

A monohull vessel is a boat with one single hull. This is your traditional sailboat , fishing boat, yacht, whatever you please. As long as you only see one hull in the water, it’s a monohull.

What are Cruising Catamarans?

Multihull boats are often called catamarans or cruising catamarans. That’s how you describe a boat with two hulls side by side. If you have three hulls it’s still a multihull but you might call it a trimaran. The word “catamaran” is from the Tamil language. It means “logs bound together.” Ironically, these older catamarans which gave us the modern word were not multihulled boats at all, but monohulled rafts. Go figure.

Are Cruising Cats Better than a Monohull Sailboat?

Here’s the question every new sailor wants to know. Which boat is best? It’s not as easy as all of that, though. Let’s break down some of the differences.

Monohull Design: These boats have a keel under the hull to aid in balance and stability. If a monohull sailboat were to be pushed over, gravity would help that heavy keel right it again assuming it wasn’t capsized and taking on water. That said, a monohull may heel as much as 20 degrees at speed. The interesting thing about this is that it’s either a benefit or a drawback depending on how you like to sail. For some sailors, this heeling is part of the adventure of being at sea. For others it’s a nuisance that spills drinks.

Monohulls are traditional boats and the oldest sailing vessels. They are well balanced and sleek. For a lot of sailors, a monohull is ideal because there seems to be less boat to worry about. A lot of sailing is based on the idea that you’re in a monohull vessel. You might consider this classic sailing.

Multihull Design: Because the boat is balanced on multiple hulls, they do not displace as much water as a monohull. The weight of the boat covers a much larger area. Living quarters on a catamaran can be above deck and below.

The stability of a multihull cat is superior because of this larger area. A monohull can tip with too much sail where most cruising cats will not. Multihull boats rarely heel more than 5 degrees up to 10 degrees or so at speed. As such, sailing in a multihull is often considered more relaxing, if that’s what you’re looking for.

One thing to be aware of is that, with little heeling, you may be slow to notice bad weather. A harsh wind will push a monohull around a lot more than a multihull. Since the heeling is so slight in a multihull, the wind can really pick up before you start to notice you may be heading into dangerous weather.

Monohull Space: The living space in a monohull is typically secluded below deck. This is a limitation of the design because where else would you put any living quarters?

Multihull Space: Many sailors looking for creature comforts at sea prefer multihull sailboats because of the extra space. A multihull vessel will offer as much as 50% more space than a similarly sized monohull. Remember, you have two decks here and maybe a flybridge. This means more storage space as well. But, as we will see when we cover boat speed, this does come at a cost.

Monohull Comfort: A monohull boat will have some sway and that can lead to seasickness for some people. You get some roll and pitch that can’t be avoided. That said, for those who are used to it, it’s a very smooth motion.

Multihull Comfort: Seasickness is much less of an issue on a catamaran. The ride is stable and it means sleeping and cooking are relatively safe and comfortable as well. The big downside for comfort with a multihull is the slapping. It takes a while to get used to the water slapping against the hull in a catamaran. This is something you don’t experience in a monohull.

Monohull Appearance: This is a tough one to judge. After all, beauty is in the eye of the beholder, right? But many people do consider monohull boats to be sleeker and more visually appealing. Does that mean much on the open water? Maybe not. But think of it like a sports car. No one “needs” a Ferrari when a Volvo will get you there, too, but they certainly look cool.

Multihull Appearance: Because of the wide construction, catamarans are somewhat clunkier in appearance than a monohull boat. Not everyone feels this way but some people do consider multihulls uglier overall. This won’t affect performance in any way, of course.

Monohull Speed: The speed of a monohull boat is consistent and reliable but it’s generally slower than what you’d experience in a multihull. In fact, most cruising multihulls can get close to 25% more speed than a monohull sailboat. If you bump up to a trimaran they even sail faster. But that does come at a cost.

Multihull Speed: Even though a cruising cat can be faster, it won’t always be faster. A monohull sailboat is very consistent when it comes to speed. A catamaran is not. If you have a multihull boat that’s loaded with gear, it’s going to slow down noticeably. They have to stay light if you want to experience that speed. This is something most people do not consider, that the potential speed advantages will almost certainly be wiped out for any kind of serious blue water cruising.

So on a day trip for fun, you might choose a catamaran for the wind in your hair. But if you wanted to go on an extended voyage and still make good speed, a monohull could prove superior or at the very least equal. In practical terms, we don’t think there’s really much of a difference overall.

Monohull Sailing: When you’re pointed upwind, a monohull sailboat really shines. While a multihull is more stable much of the time, on rougher seas a monohull’s keel gives good balance and displacement. That makes for a better experience overall.

Multihull Sailing: Multihulls don’t point the same upwind as a monohull. As the waves pick up and the water gets rough, the feeling on a multihull goes from being stable and steady to decidedly unpleasant.

Monohull Anchoring: You do have to deal with limited anchorage when you’re in a monohull. A little bit of swell or shifting wind can make anchorage in a monohull a real problem. When you pull into a slip, docking and slipping fees will be much less in a monohull thanks to the limited space you’re taking up.

Multihull Anchoring: It’s typically much easier to manage this in a multihull. Changes in wind and swell have little effect on a multihull. You can also make use of many more locations not accessible to a monohull boat. The downside to this is trying to find space at a slip. Many slips won’t have room for a larger catamaran which is why you’re so likely to see them all anchored in a little bay or cove.

Monohull Maneuverability: Maneuvering a boat with a single engine or sails can take some practice and effort. This again is one of those things that some think is a drawback but others enjoy. There’s also the possibility that you’ll have better luck maneuvering a monohull in tighter spaces. If draft is not a concern, a monohull handles narrow rivers and channels better.

Multihull Maneuverability: The maneuvering of a multihull vessel can be a lot tighter and easier than a monohull. If you have two engines on a catamaran you can pull off a very tight 180 turn in a pinch, at least compared to a monohull. This makes navigating some marinas a lot easier.

Monohull Reliability: There is nothing inherently unreliable about the design of a monohull boat. These are, afterall, the old standby. But as we’ve seen there are some aspects that can be considered drawbacks. But a well made monohull boat should be reliable for many years.

Multihull Reliability: Like a monohull, there’s nothing that would make a multihull inherently unreliable. But it’s worth noting that if you have a catamaran with two engines, you have added reliability. If the engine on a monohull fails, you may end up stranded. If a multihull engine fails, you may still have a second to get you home.

Multihull Safety : Generally speak, a multihull boat is safer. Less heel means they are less likely to flip or capsize. And, if they do, multihull boats are far less likely to sink. The speed of a multihull can be considered a benefit as it can give you an edge both in outrunning poor weather or getting to help in an emergency. Enhanced maneuverability can help avoid danger. Finally, the potential for an extra engine can also get you out of trouble as well.

It is possible to flip a multihull boat, but not easy. You’d likely need to be experiencing very high winds and waves to do this.

Monohull Draft : Your monohull boat will have a sizable keel under the water. For that reason, you’re going to need to avoid shallow waters. This can be a drawback for navigating some rivers and inlets, as well as getting closer to shore.

Multihull Draft : The shallow draft on a multihull means it’s easier to get a catamaran closer to shore. You can also make your way down some rivers more easily as a result. It’s entirely possible to take a catamaran right up onto some beaches. This is an absolute impossibility for monohull boats.

Monohull Costs : A monohull will almost certainly cost less to buy than cruising multihulls. Maintenance and upkeep costs are usually lower as well. If you’re on a tighter budget, a monohull is typically a better choice.

Multihull Costs: Aside from initial costs, catamarans often have higher associated costs. You’ll need double dock space and that means double dock fees. Also, because you have two of everything, you need to essentially do double maintenance. The major cost benefit for a cruising multihull is that you can expect it to have a higher resale value one day as well.

Fuel efficiency is a point in favor of the cruising catamaran. Less drag means it uses fuel more efficiently so you spend less to go further.

The Bottom Line

There are a lot of advantages to sailing with a multihull vessel these days. In fact, sailing catamarans really outshine monohull boats in nearly every regard that we have listed. But does that make them better? Honestly, it’s not a fair question. They’re two different things. They have advantages and they may be better for you and how you want to sail. But you may also really prefer sailing a monohull. You may like the look and the challenge and the feel of the boat better. Any sailor who has tried both knows there really is a totally different feel to taking on the sea in a monohull versus a multihull.

We recommend trying both if you get a chance. You may agree that a multihull has many more benefits for you and your family. But maybe a monohull is still the best choice

About Chris

Outdoors, I’m in my element, especially in the water. I know the importance of being geared up for anything. I do the deep digital dive, researching gear, boats and knowhow and love keeping my readership at the helm of their passions.

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