is a catamaran a canoe

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A complete catamaran guide.

• Post Written By: Boater Jer
• Published: January 26, 2020
• Updated: November 27, 2020

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There you are, out on the water when a strange craft approaches.  Is it a sailboat? It sure looks like one until it turns to face you.  That’s when you notice this boat doesn’t have just one hull. It has two hulls and it’s called a catamaran.

Catamarans are unique, and highly stable watercraft.  We’ll explore all the ins and outs of sailing the waters in one of these weird, and awesome multi-hulled craft.  Join me as we explore the wild world of sailing catamarans.

A History Of The Catamaran

It is believed that the first people to use a catamaran design were those living in Australasia.

The succession of boat design in this region was actually very interesting.  The beginning of boats in the area was simple, albeit conventional rafts. These were fashioned from logs strewn together with plant fiber lashings such as those formed using bamboo fiber.  

Catamaran Evolution

The conventional raft gave way to a minimal raft.  This design was basically a conventional raft with two cross beams added in the form of logs.  These would be eventually hollowed out to improve buoyancy.

The next step in the evolution of boats in the Australasian region was the double canoe.  This proved to be the first real catamarans.  

After some time, the form evolved further into the asymmetrical double canoe design.  In this design, one canoe was large and the other attached canoe was smaller.

The asymmetrical design quickly evolved into the single-outrigger boat like the one shown in the photo below.

The final stage of the evolution of the catamaran in the region was to gain a second outrigger.  This in effect created the trimaran with the single central hull and dual outriggers.

Eye Witness Accounts Of Catamarans

In 1697, William Dampier wrote of witnessing a type of seafaring vessel off the coast of Coromandel.  He noted how the locals called the type of boat a catamaran. He also noted that it had multiple hulls (logs) and that they were small vessels that the person operating would have to hang partway into the water, straddling the hull (log).

The name catamaran came from the Tamil.  And yet, it was easily applied by the European visitors to the two hulled sailing vessels that sped across the water in the region.

Although Dampier may have described the catamaran in the 1690s, the type of boat was actually used as early as the 5th century by the Tamil Chola dynasty.  They used boats to move their troops from one island to another. Using this design of boat allowed them to travel heavy, travel quickly and was partially responsible for the conquering of neighboring Burma, Malaysia, and Indonesia.

Building A Boat – Basics Of Catamaran Construction

A boat is usually thought of as being a single-hulled vessel that travels along the surface of the water.  It can have multiple types, shapes, and designs of the hull. However, it is often only thought of as having a single hull.  But, what if it had two hulls? Would that be like taking two separate boats, and making a raft over both of them? In essence, that is exactly what a catamaran is:  two boats made into one.

Advantages Of Multiple Hulls

• More stability than a monohull
• Wide supporting base allows for larger sails than monohull craft of the same length
• Hull does not require the deep-running keel of a standard monohull sailboat
• Less hull drag in the water than a monohull
• Less power required to drive a catamaran forward than a monohull boat

Disadvantages Of Multiple Hulls 

• Due to multiple hulls, construction is more expensive than a monohull design
• Catamaran speed relies on lightweight materials to make a lightweight craft.  This also drives up the cost of construction.
• Extra engineering requirements for multi-hull craft also increase the cost of construction.

Conclusion?  Well, it looks to me like everything about catamarans points towards superiority over monohulls in nearly every way.  But, you get what you pay for. I think the same thing likely applies to cars too. For instance, I have a performance car that cost me about 10k more than the equivalent non-sports car within the same class. 

Yet to drive the vehicle, it performs so much better than the normal version of the car, it really speaks volumes to the difference between a common vehicle, and a performance one.

Speaking of performance vehicles, let’s take a look now at the different kinds and uses of a catamaran.

Catamaran Types

Commercial catamarans – ferries.

One of the most common uses for a catamaran is the commercial use of the vehicle design when it comes to ferries.  This is likely due to the wide, flat deck possibilities of a catamaran versus a monohulled boat. Not only that, but the catamaran is also a much more stable bodied vessel.  This again makes it a superior design for transporting larger land vessels like trucks and so forth. They can easily drive on the ferry without fear of the ferry tipping over.

Some ferries are designed for taking vehicles, like the one you might find in the city of Toronto.  Where it transports cars from the mainland to Toronto Island. Others are designed specifically with the sole purpose of transporting people. I took a look at one such ferry that operates in Germany.  Take a look at the following case study.

Commercial Use Case Study – The Ferry

The FRS Helgoline is a ferry catamaran operating out of Flensburg, Germany, close to the Danish border.

According to the ferry company’s website, the ferry runs using four main engines which are run to a capacity of 12,182 hp combined.  This blasts this ferry at a speed of 35 knots or 65 km/hour. This is equivalent to 40 miles per hour. That’s pretty good considering the size and weight of the ship body this catamaran can carry.

Speaking of capacity, the ship can carry 680 passengers. At 56.4 meters long (185 feet) by 14 meters wide (45.9 feet), that’s a decent passenger capacity. 

Catamaran Passenger Capacity Versus Monohull Boat Passenger Capacity 

The general rule for calculating passenger capacity for a boat is as follows.

Length x Width / 15 = Passenger Capacity

Therefore, the FRS Helgoline should have a calculated capacity calculated as follows.

185 x 45.9 / 15 = 566  

But it actually has a capacity of 680 which is a 20% increase in capacity over a standard monohull.

For comparison, let’s look at a superyacht.  A 48.5m (159 feet) long by 10.7m (35 feet) beam (width of the boat) Palmer Johnson Supersport 48 (valued at about $28.5 million dollars) should have a capacity calculated as follows.

159 x 35 / 15 = 371

In short, 26 feet of difference in length equates to 309 fewer passengers.  It is almost half of the capacity of the catamaran at 26 feet longer length.

Photo courtesy of https://sysyachtsales.com/

Commercial Catamarans – Service Vehicles

Although Catamarans are typically used as ferries due to their stability and ability to carry wide loads on their flat decks, there are many different service catamarans out there as well.  From a support vessel to a crew transfer or search and rescue, catamarans are a solid and stable platform to build a ship on.

This is the Ardea which is a 20 meter (65.6 feet) catamaran to be used for crew transport and as a support ship.  This ship was built by the Echo Marine Group and delivered to Western Australia in early 2019. This particular vessel is in the service of the Cape Preston Sino Iron Project.  

Catamarans are used all around the world, for a variety of tasks, not just ferries or support craft.

Commercial Catamarans – Cruise Lines

Now these are the catamarans we all want to be aboard, aren’t they?  Due to the wide stance, these ships can feature massive halls and wide-open interior areas.  These ships are stable, and some would say even more stable and safer than monohull design ships.  

There are many cruise ship catamarans in use today around the world.  Some of the more ‘famous’ catamaran cruises are those which investigate the Galapagos Islands.  There are several high-end, small fleet, cruise lines operating to the Galapagos which utilize catamaran design vessels as their primary ship type. 

These ships can be extremely comfortable and stable and often offer some reprieve to those who may otherwise feel seasick. It won’t stop the feeling, but the more stable the hull, the less the boat rocks around.

Military Catamarans

Catamarans make excellent military transport vessels.  They are stable and the potential to have a large, flat and wide deck for transporting land craft, troops or acting as a landing pad for vertical take-off aerial craft.  The stability of the two hulls makes the vessel an excellent candidate for military use, and thus it is used for said purpose.

As you can clearly see in the image of the USNS Spearhead, the rear of the vessel has a moveable ramp that can be used for loading and unloading land vehicles.  The interior bay of the craft is visible in the image as well, a large area for storage of vehicles, supplies and more. The crane arm on the back of the ship also shows how it is a versatile craft, set up to act as an excellent support craft with a helicopter landing pad and ample storage and freight capacity.

Recreational Catamarans

Catamaran Personal WatercraftThe wind is in your hair, the warm spray from the hull cutting over the edge of each wave as you skip over the water.  That is life, let me tell you. Personal watercraft have come a long way over the years and the small one, two, three and four-person catamarans have come a long way as well. 

Depending on the options, you can get a small one or two-person catamaran for as little as $1500 new.  That might be an inflatable though. There are some very nice, rigid hull designed catamarans for 1-4 people that range from $3500 to $15000.  And these are basically open, personal watercraft like that shown in the image below.

Using a small catamaran can be quite challenging to learn at first.  Sailing is not for the faint of heart. It requires skill, technique, knowledge of the wind and sea, and a bit of hard work.  But it can be fun, rewarding and a great way to catch some sun and fresh air out on the water. It’s a relatively GREEN sport as well.   Given the use of sails over gas-powered motors that is.

‘Sailing Cats’ – Sailing Catamarans – Yacht & Luxury Class

Here’s where we get into the dreamy boats of the rich and famous.  I priced out a small 43’ luxury Leopard 40 sailing catamaran. Even before I added any extras at all, the base price was $399,000 USD.  I imagine if I added a few of the multiple extras available, and some tax, freight and that sort of thing, I’m easily in half a million dollars.  And that’s the smallest base model.

There are all kinds of luxury catamaran shipbuilders across the world.  From Asia to Europe and The Americas, it seems any major boating country has at least one company building luxury catamarans.  It’s weird that you don’t see more of them on the water though, don’t you think?

Being sailing vessels, these luxury cats require some training in sailing before you get behind the wheel.  And considering the price point, I would definitely want to be at least a semi-decent sailor with some good few years experience under my belt before I would comfortable at the helm of a half-million-dollar sailing cat.  It’s all relative I suppose. I imagine a billionaire might bat an eye at the prospect of wrecking a half-million-dollar boat. But to me, and most of you reading this, that’s likely a lot of money.

‘Power Cats’ – Powered Catamarans

The powered catamaran is one of my favorite boats.  They have sort of a muscle car appearance with the wide and often tall front end of the boats.  I find it to be reminiscent of a large air intake on the front hood of a rally race car like the Subaru WRX, for instance.  These boats are fast, they are stable and handle very well. Catamarans are often considered the boat of choice for long sea voyages due to their stability.  

A powered catamaran will definitely cost more than a powered monohull boat of the same length.  Why? Well, the powered catamaran has one crucial downside. That is, it needs two engines. One for each of the two hulls.  Otherwise, it’s off balance for propulsion. These two engines or motors have to be in sync with each other or again, the propulsion will be off-balance.  Because they have two motors, they have double the maintenance when it comes to maintaining the propulsion system.

More components also means a greater chance of things breaking down.  In essence, it doubles the chances of the ship having a motor break down. The saving grace is that should one motor break, they have a backup, even if it does mean very unbalanced propulsion.  In contrast, a monohull vessel of the same length may only have half the chance of motor failure due to only having one motor, but if that one motor breaks, then what? Call for help, that’s what.  A cat would have a struggling chance to get itself back to port. A monohull would be dead in the water unless it was carrying spare parts or another motor onboard somewhere.

Catamaran Frequently Asked Questions

What is a catamaran cruise.

A catamaran cruise is simply a cruise on a dual hull design boat.  Often used for river cruises, the catamaran which is used as cruise ships are often considerably smaller than their giant monohulled counterparts.

What is the purpose of a catamaran?

A catamaran is a design for a boat that utilizes two hulls.  Due to the flat, platform-like-potential for the deck of the boat, the catamaran is often purposed with transporting materials, vehicles, and people.  For instance, catamarans are quite often used as ferries.

Is catamaran safe?

Catamaran are very safe water craft.   The design of riding on two hulls separated by a gap in between, in essence is like giving a car a double-wide wheel base.  The wider the stance, the more stable the craft, from side to side anyway. And if the length of the boat is proportional to the width, then it becomes an extremely stable craft.  That is why catamarans are often considered the best to be used for long voyages. Yes, catamaran are safe.

What is the difference between a catamaran and a sailboat?

A traditional sailboat is a deep, monohull vessel that has at least one mast extending high into the air above the deck to hold sails.  A catamaran refers to the design of a dual-hull boat and really has nothing to do with sails. Although, catamaran do make excellent sailing boats as well, they are quite capable of acting as power boats and do not require sails if they have the correct amount of powered motors to propel them.  Sailboats, although also able to be powered if a motor is provided, are traditionally monohull and wind-powered exclusively.

Do catamarans have small interiors?

The size of an interior cabin on a boat is typically proportional to the size of the boat itself.  If a catamaran has above-deck cabins, they will likely be able to be of a larger design than those you would find on deck of a monohull boat.  This is because a catamaran has a much wider footprint than a monohull boat of the same length. This extra width would allow for larger on deck cabins.  

How much does a catamaran cost?

A personal watercraft (1-2 person) inflatable catamaran will run you anywhere from $1500-$12000 USD, depending on the quality and features.  The rigid hull catamarans of the same size start at about $4500 USD.

A small cabin cruiser type of catamaran will typically start at about $60000 for a small base model and the price just goes up and up depending on size and features.

For Instance, a 40’, 3 cabin with 1 washroom cat will cost you about $500,000 USD for the base model.  They are considerably more expensive that a monohull of the same length. However, the trade-off is greater stability and a smoother, more comfortable ride.

Is a catamaran more work to maintain?

Technically yes.  Due to having two hulls and if powered, two motors and likely also water jets, this means you have double the oil changes of a boat that would have a single motor.  Once you get past the basic engine and hull maintenance, a catamaran is not that much more work than a monohull ship of the same length.  

The trouble with catamarans in terms of maintenance, is that once they reach a certain length, the width becomes more than a standard lane on the road.  That being said, if you ever need to transport the boat via land, it can be quite the challenge. Especially if you need to pay to have a police escort for an extra-wide trailer.  And special licensing might be involved as well.

What is the difference between a catamaran and a trimaran?

A catamaran is a dual hull boat.  In other words, it has two hulls. A trimaran has three hulls.  

Is a catamaran considered a yacht?

According to Oxford dictionary, a yacht is a medium-sized sailboat equipped for cruising or racing.  A catamaran, on the other hand, is a boat with two hulls. Therefore, a catamaran can most certainly also be a yacht.  And likewise, if a yacht has two hulls, then it is a catamaran as well.

Can you get seasick on a catamaran?

Seasickness occurs when a person feels nauseous from the swaying motion of a rocking ship.  These feelings may be lessened on a catamaran, due to their extra stability. However, a catamaran may be slightly more stable than a monohull of the same length, but it is still a boat.  And it will still make someone who experiences seasickness continue to feel the ill effects.

Are catamarans more stable in rough seas?

Catamarans are known to be more stable than monohull ships of the same length.  This is why catamarans are often the ship type of choice for long sea voyages due to their stability.

Why do catamarans capsize?

Catamarans are not known for capsizing.  The larger vessels that is anyway. But, it does happen from time to time.  Catamarans are known for their stability, so typically if a capsize event should occur, it is typical for them to be extreme circumstances.  

Personal watercraft catamarans are a different story though.  These are in fact known for tipping over. Not because they are less stable than their monohull counterparts of the same length.  But instead, because they are able to go considerably faster than monohull personal watercraft of the same length (not including powered craft though).  This is due to the sailing cats being able to have a larger sail than a small monohull sailboat of the same length.

Due to the extra sail, they are able to travel faster than monohull sailboats of the same length.  This allows them to whip around on the water and at higher speeds, whipping your cat about quick can easily send it over sideways. Extra speed means fast turns carry momentum in the direction of travel and that extra speed equates to tipping over if turned too fast.  To sum up, they capsize due to user error or extreme events.

Which is safer, a catamaran or a monohull?

Due to the extra stability of having a wider footprint than a monohull, a catamaran of the same length is the safer vessel.

Are catamarans safer than sailboats?

The same rule applies to stability versus the length of the hull.  A cat will always be the more stable length for length. However, due to their ability to go much faster than a monohull sailboat, this kind of cancels out some of the added safety due to stability.  With that in mind, they may just be about the same but there is one generalization we can make when comparing the safety of catamarans vs sailboats: At the same speed, and of equal length, sailing or power catamaran will be safer than a monohull sailboat.

How fast can catamarans go?

The speed a catamaran can go is entirely dependent upon the hull design, weight of the vessel, the strength of propulsion (be it wind or powered) and so on.  The general rule is that in terms of sailing cats vs monohull sailboats, a cat of equal length can typically go faster than a sailboat.  

In terms of powered cats vs powerboats, a powered catamaran will typically require less energy to move forward than a monohull of the same sort of hull design (but monohull of course) and thus a cat should, in theory, be able to go faster than a monohull when both are using propulsion that is equal in power.

Bibliography

• Wikipedia – Catamarans
• Mahdi, Waruno (1999). “The Dispersal of Austronesian boat forms in the Indian Ocean”. In Blench, Roger; Spriggs, Matthew (eds.). Archaeology and Language III: Artefacts languages, and texts . One World Archaeology. 34 . Routledge. pp. 144–179. ISBN 0415100542 .
• Wikipedia – Spearhead -class expeditionary fast transport
• https://www.tiki-toki.com/timeline/entry/169516/Origin-of-the-catamaran/#vars!panel=1620923!
• https://www.austal.com/ships/passenger-express-56
• https://www.adventure-life.com/galapagos/galapagos-catamaran-cruises

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Advertisement There you are, out on the water when a strange craft approaches.  Is it a sailboat? It sure looks like one until it turns to face you.  That’s when you notice this boat doesn’t have just one hull. It has two hulls and it’s called a catamaran. Catamarans are unique, and highly stable watercraft. 

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What Is A Catamaran Sailboat? (And What It Looks Like)

Last Updated by

Daniel Wade

August 30, 2022

Catamarans are increasingly popular for sailing and commercial use, but what sets them apart from monohulls and other multihulls?

A catamaran is a twin-hull boat with two equally-sized hulls placed side by side. They’re powered by engines, sails, or both—and they’re known for efficiency and speed. Catamarans are the most common kind of multihull boat.

In this article, we’ll go over the characteristics of catamarans and how to differentiate them from other types of boats. Additionally, we’ll cover the advantages and disadvantages of catamarans and compare them to trimarans and monohulls. We’ll also go over the most common types of catamarans and their uses.

We sourced the information in this article from marine design guides, boat identification resources, and the online boating community.

Table of contents

‍ How to Spot a Catamaran

Spotting a catamaran is easy. Simply look at the hulls and count them. Catamarans have two hulls side by side and a relatively large gap between them where you can see light on the other end. Catamarans are distinct from trimarans, which have an additional hull between the two outer hulls.

How do Catamarans Work?

The principle behind the catamaran is simple. You can think of catamarans like cars and monohulls like motorcycles. Catamarans distribute their weight between hulls on either side, whereas monohulls utilize only one hull.

Evidently, cars are much more difficult to tip over and can hold much more weight. Additionally, cars are wider, as they have much more contact with the road. Catamarans work in a similar way, as they have a wide stance and contact with the surface on both sides.

Obviously, that isn’t the most precise comparison. But the basic principle is the same, and catamarans have a few notable benefits over monohulls.

Catamaran Vs Monohull

Catamarans are easy to distinguish from monohulls. A monohull is just a regular old boat with a single hull. The vast majority of boats and ships are monohulls. Catamarans have two hulls, which are usually sleek and narrow.

Here are some comparisons of catamarans and monohulls, along with the advantages twin-hull designs have over most single hull types.

Benefits of Catamarans

Catamarans have numerous benefits. The first is speed. Catamarans produce less drag than monohulls and thus can achieve excessive speeds both under sail and power. They don’t need to plane like monohulls to achieve these high speeds, and they use less fuel.

Catamarans are also much more stable than monohulls. They have a wide stance and shallow draft, and many waves and swells can travel between the hulls instead of below them. This effectively reduces an entire axis of movement and prevents catamarans from rolling excessively.

Drawbacks of Catamarans

Catamarans aren’t advantageous in every way, or else we wouldn’t bother building monohulls. The disadvantages of catamarans limit their use to niche commercial applications and high-end yachts. But what are the drawbacks of a twin-hull design?

Sailing catamarans don’t follow many of the traditional boat handling rules and characteristics that sailors pass down for generations. Some, such as hull speed limitations, are good to do away with—while others, such as responsiveness, are not.

Catamarans aren’t as quick to the helm or responsive as monohulls. There are some exceptions to this rule, but for the most part, you’ll get a lot more feedback from a single-hull vessel. Additionally, the large section of deck between the hulls of a catamaran is prone to pounding in rough seas, which is loud and uncomfortable.

Catamarans can sometimes be twice the width of an equivalent monohull sailboat, which can increase mooring fees and limit docking options.

The final major drawback of catamarans is a consequence of their stability. Traditional full-keel monohull sailboats have a very low center of gravity, which makes them roll in heavy seas but ensures a recovery.

Catamarans have a higher center of gravity, and they can’t right themselves after a knockdown. And though catamarans are less likely to roll, a severe list on a multihull is a much more serious concern than on a ballasted monohull.

Catamaran Vs Trimaran

Catamarans and trimarans are often lumped together, but they have very different design and performance specifications. Trimarans have three hulls, whereas catamarans have two.

Trimarans look a lot like catamarans from the side, but a quick glance at the bow or stern can set them apart. Trimarans are faster than catamarans, as they distribute their weight across three hulls instead of two. This helps them stay centered and reduces interference from pitching and rolling.

Catamarans are fast, but they lose out to trimarans when going head to head. However, catamarans are much less expensive to build and maintain and often have roomier cabins due to their larger hulls.

Types of Catamarans

There are numerous types of catamarans, and their uses vary widely. The catamaran is one of the oldest and most useful hull types, and some variants have been used for thousands of years. Here are the most common kinds of catamaran boats and their uses.

Sailing Catamaran

Sailing catamarans are probably what you think of when you hear the name. Sailing catamarans are sailboats with two identical hulls connected by a center deck. The largest sailing catamarans are spacious and stable vessels that are capable of serious offshore sailing.

Sailing catamarans have a number of notable advantages over monohulls. Monohulls, which are traditional sailboats with a single hull, are limited by a simple concept called hull speed. As the bow and stern wave of a monohull intersect, they cause drag which limits the top speed of the boat.

Catamarans are not bound by hull speed limitations, as they have two hulls. Catamarans can go twice or even three times as fast as similar monohulls and achieve excellent travel times.

Catamarans are also more stable than monohulls, as their wide stance and shallow draft reduce the effect of rough water. They don’t heel, as the force of the wind is counteracted by the double hulls. Additionally, modern sailing catamarans can ‘wave pierce’ by cutting through swells instead of riding over them.

Sailing catamarans come in many shapes and sizes. Small sailing catamarans, such as those used in races and regattas, are known for their speed and relative stability compared to light racing monohulls. Sometimes, they feature a smaller second hull for stability—these are called outriggers.

Sailing catamarans have spacious interiors thanks to the large cockpit between the hulls. This cockpit usually contains cooking and eating spaces, a place to sit, and a hallway between the hulls. The hulls usually contain living quarters and often mirror each other.

Power Catamarans

Power catamarans have an even greater variety than sailing catamarans. These vessels are used for everything from party platforms to ferries and patrol boats.

Power catamarans are a recent development, as engineers and marine architects now realize they have numerous hydrodynamic advantages over other hull types.

Catamarans are much more efficient than other hull types, as they have less drag relative to their size. Additionally, you can build a much larger catamaran with less material. This makes them popular for car and rail ferries, as builders can construct a very wide vessel with two small hulls rather than a narrower vessel with a large single hull.

Military and Commercial Catamarans

Even the military has found a use for the catamaran hull shape. The Spearhead class EPF is an expeditionary fast transport vessel designed for carrying capacity and speed. It has two sharp hulls and a huge cargo capacity.

The Spearhead class EPF is 337 feet long, which is about the same length as a WW2 escort destroyer. Yet despite having a similar length and displacement, these catamarans can travel more than twice as fast—43 knots, or nearly 50 miles per hour. Their great speed is a direct consequence of their catamaran hull type.

Power catamarans are also used as patrol and utility boats on a much smaller scale, with either outboard or inboard motors. The State of Texas uses catamarans to patrol shallow rivers and lakes. Texas Game Wardens utilize state-of-the-art aluminum catamaran patrol boats, which are fast enough to outrun most fishing boats.

There’s another form of power catamaran that you may not have considered. Pontoon boats are technically catamarans, and they’re enormously popular on lakes and rivers throughout the country. Pontoon boats aren’t known for speed, but they’re a great platform for a fun and comfortable outing.

Catamaran Houseboats

The final common type of power catamaran is the two-hulled houseboat. Houseboats don’t always use the catamaran hull type, but it’s common enough that most major manufacturers offer it as an option.

Catamaran houseboats have a few notable advantages over monohull designs. For one, they’re easier to build—especially when pontoons are chosen. Additionally, they’re better suited for navigating shallow water. These vessels can support more weight across their two hulls, offer increased stability, and they’re also efficient.

Why Aren’t Catamarans More Common?

With all the advantages listed in this article to consider, it may seem strange that the use of catamarans is still somewhat limited. At the end of the day, it comes down to economics—as monohull boats and ships are simply cheaper to build.

Additionally, catamarans have some distinct limitations. Monohulls have lots of storage space in their hulls and can carry thousands of tons of cargo safely in all weather conditions. Catamarans lack this space and low center of gravity, so they’re not ideal for transporting cargo past a certain point.

Additionally, monohulls work, and many people are reluctant to experiment with new designs when old designs work just fine. This rule applies to both large and small boats.

A large monohull sailboat can be constructed at low cost from stock plans and reliably sail almost anywhere. Very little complex structural engineering is involved, and looser tolerances reduce cost and maintenance requirements.

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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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What Is A Catamaran? Does It Have Engines Or Can It Only Sail?

Catamarans are a type of boat that has two hulls connected by a platform. They offer many advantages over traditional monohull boats, including increased stability and improved speed. This article will explore what exactly catamarans are and how they can be powered. We’ll also look at the differences between sailing and motor-powered catamarans to help you decide which one is right for you.

What Is A Catamaran?

A catamaran is a type of boat with two hulls connected by beams. It is usually powered by sails, although all modern catamarans come with inboard motors for propulsion. Catamarans are traditionally used for sailing, fishing, and leisure activities . They can be used in both fresh and salt water, and their light weight allows them to travel at high speeds without using much fuel.

Catamarans are known for their stability and durability due to their wide beam and shallow draft. This makes them ideal for traversing shallow waters or areas where the sea is choppy and unpredictable. They also have the advantage of being able to turn quickly and maneuver easily in tight spaces. Additionally, they provide a smooth ride despite rough seas since the two hulls help to reduce wave impact on the boat itself.

Advantages Of Catamarans

Catamarans offer many advantages to sailors and other seafaring travelers. The primary benefit of catamarans is their stability, due to the fact that they have two hulls that are connected by a platform. This design makes them much more resistant to waves than monohull vessels, which makes them ideal for activities such as fishing or leisurely cruises near shore. Catamarans also tend to be lighter, faster and more fuel efficient than monohulls, making them an attractive choice for sportier outings such as racing or overnight trips. In addition, catamarans can either be powered by engines or sails, giving you the flexibility to choose whatever type of propulsion suits your needs best.

Types Of Catamarans

Catamarans come in a variety of shapes and sizes, from luxurious yachts to fast-moving racing boats. They offer a unique sailing experience, with their twin hulls providing stability and comfort while still able to reach high speeds. Catamarans can be powered by engines or sail, enabling them to move swiftly through the water. Some are designed for serious racing, while others are equipped for leisurely cruising on the open waters. With so many options available, there is sure to be a catamaran that will fit any sailor’s needs. Whether it’s speed or comfort that you’re after, a catamaran can provide an unforgettable experience on the seas.

Sailing Vs. Motor-Powered Catamarans

Catamarans offer many advantages over monohulls and have become a popular choice for many reasons.. They are lightweight, stable, and provide ample space onboard. However, there is one major decision to make when purchasing a catamaran: whether to choose a sailing or motor-powered version.

Sailing catamarans have the traditional look of a boat with two hulls and tall sails, while motor-powered catamarans come equipped with engines and resemble more of a powerboat. Both types of catamarans offer their own unique benefits and drawbacks. Sailing versions are cheaper to purchase but require the sailor to be knowledgeable in sailing tactics in order to navigate easily. Motor-powered versions are more expensive but can be easier to operate in certain conditions due to their greater speed and maneuverability. In the end, it comes down to personal preference as both types can provide an enjoyable experience on the water.

Benefits Of Chartering A Catamaran

Catamarans are a type of sailing vessel with two hulls that are connected with a frame. They are typically very stable and have plenty of deck space for passengers and amenities. Catamarans also come equipped with two engines, so they can travel in calm waters even when there’s no wind to power the sails. The engine also allows them to get back quickly against strong winds or tides, making them great for long trips and passages.

The major benefit of chartering a catamaran is the amount of space it provides compared to traditional monohulls (a boat with one hull). This makes them ideal for larger groups, as they can accommodate more people without feeling cramped. Additionally, catamarans offer great stability in the water – even in choppy conditions – allowing you to feel safe and secure while onboard. Plus, since they don’t require as much maintenance as other boats, they’re perfect for longer periods of time on the water. All these factors make catamarans a great choice for any travel vacation with friends and family.

Frequently Asked Questions

Are catamarans suitable for excursions.

Catamarans are a popular choice for those looking to charter one for an excursion due to their spaciousness and stability. They provide more than enough room for comfortable traveling as well as plenty of storage space, making them an ideal option for extended cruising. Additionally, all catamarans are equipped with engines, allowing for easy navigation and maneuverability when needed. All in all, catamarans make great vessels for vacations and traveling and can be a great way to explore the waters.

What Is The Best Type Of Catamaran For Ocean Voyaging?

When it comes to ocean voyaging, the best type of catamaran is a modern performance cruiser. These vessels are designed to combine speed and comfort, with a shallow draft for navigating in and out of shallow waters. Modern performance cruising catamarans feature two hulls connected by an open deck, often with engines that give them greater maneuverability. They also generally have larger living spaces than traditional monohulls, so they can provide more comfortable accommodations during long voyages.

How Many People Can Typically Fit On A Catamaran?

A catamaran is a type of boat with two parallel hulls. Depending on the size, it can typically fit anywhere from 4-12 people plus crew. It’s important to note that the number of passengers will depend on the size and design of the boat, so it’s best to check with a manufacturer for more specific details.

A catamaran is a great choice for those looking to explore the ocean in style. They’re spacious and versatile, making them suitable for all sorts of travel plans and excursions. Plus, they can be powered by either engines and/or sails, so you can decide which works best for your needs. Charter prices can vary depending on your vacation needs. All in all, a catamaran is an excellent choice for anyone wanting to explore the open seas!

If you’re considering renting a catamaran, it’s important to do some research first. There are many different kinds to choose from depending on what your entire party has on their travel wish list – and make sure that you have a safe and fun voyage!

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Use our quick contact form to give us the basics about what you’re looking for and we’ll send you ideas and pricing. Don’t worry if it’s not grand enough or should be scaled back; we’ll take care of that too. When you love the plan, we put it into action. All you have to do is show up and enjoy.

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2023 Boat Buyers Guide: Catamarans

• By Karl Anderson
• December 27, 2022

The popularity of the multihull (aka catamaran or cat) fishing boats has never been greater, as more and more boatbuilders enter this growing segment of the market. The inherent stability of the catamaran design rolls less with the seas, making fishing offshore less tiresome and more comfortable. Available from 20 to 48 feet, catamarans typically offer a large fishing platform with generous storage and fishing amenities. They are available in a wide variety of deck layouts, including center-consoles, dual-consoles, and even pilothouse and express variants.

Big Picture

The large deck area of a catamaran enables many large underdeck storage lockers and insulated fish boxes in the sponsons. This gives anglers ample room for gear and the day’s catch. The catamaran’s stability, fishability, and smooth ride in rough seas make it attractive to anglers as well as day-cruisers. A center-console version adds 360 degrees of angler access to the rail. With the dual-console design, generous seating behind a beam-to-beam windshield makes for a great family fishing-friendly setup.

Live bait is one of the most popular types of fishing in virtually every coastal zone. To do it successfully requires optimal water capacity and proper flow. The minimum size of the outflow water plumbing should be twice the size of the inflow. The plumbing should have a drain at the bottom to shed scales at the end of the day, as well as a drain at the top of the well to adjust capacity and allow overflow. Above-deck transom-mounted wells should fully flood to the lids when running to keep baits from getting beat up. 

Tip: A sump box with multiple pumps in case a pump fails is the best setup for first-rate livewells. Conveniently located inflow and outflow valves make it easy to optimize the flow without tiring your bait from swimming too much in the well. 

Rod Storage

Having enough rod holders is essential to be successful for opportunity fishing. Look for vertical rod storage along the console and across the back of the T-top. Many models also have rod holders along the outboard transom wall. Having plenty of gunwale rod holders for drift- and kite-fishing is helpful. 

Tip: Placing adjustable swivel rod holders by Gemlux makes deep-dropping, lure-fishing and drifting even easier because they allow your rods to face the direction the baits are fishing, yet they can be swiveled back to keep rods from sticking out of the boat while running and docking. 

Manufacturers often offer multiple choices for horsepower, but whatever the choice, the engines must come in pairs. For example, you might order twin outboards (one for each sponson) or four outboards (two for each sponson), but single- or triple-outboard configurations are not common on a cat. Optimal selection should be made based on user load, weight of the boat, ride comfort , performance desires, and best case for resale. It’s a rare day when you can run wide open, but having more horsepower gives better torque at slower speeds and thus better control. Running larger engines slower gives better fuel efficiency too.

Tip: When possible, choose the highest horsepower offered because it typically leads to a better resale value with a shorter sales cycle. 

Power steering from engine manufacturer Optimus or SeaStar is essential with the higher horsepower required for larger boats, and it makes installing and operating the upper station in a tower far more practical and comfortable.

With the power demands of electronics, livewell pumps, stereo amps and more, it is wise to have at least two house batteries, and for larger boats, a third or fourth with a multibank charger for dockside. Each engine should have its own dedicated battery as well. 

Electronics

Typically choosing the largest screen or multiple screens that will fit on the console is best-case scenario for ease of use, ergonomics, and visibility. VHF radios, stereo controller, and equipment switches for lighting, pumps, and accessories should all be integrated with greatest visibility and ease of operator reach. 

A Tale of Two Hulls 

A catamaran rides on pair of hulls, or sponsons, each thinner and sharper than  that of a similarly sized monohull boat. The narrow sponsons of the cat tend to slice easily through water to deliver a smooth ride, even in rough seas. At the same time, with the sponsons positioned out to the sides of the boat, cats tend to roll less, thus providing great stability to enhance crew comfort, security and safety. However, cats tend to corner more flatly than a monohull, and some hulls (but not all) tend to lean outward versus inward during a turn.

Experts Say

Newer designs such as Invincible’s Morelli and Melvin-designed semi-asymmetrical sponsons eliminate some of the negatives of the cat design, such as “sneezing,” where water sprays out the front of the boat when hitting a wave. They’ve also controlled the uncomfortable “outboard lean” ­sensation common in older designs when in a turn. Once transitioned to a ­catamaran, many become true believers and preach the benefits of the design.

Editor Says: Saltwater fishing cats not only offer superb stability and smooth ride, but some also display exceptional speed and range. I recall one trip out of Key West, Florida, aboard an Invincible 40 Cat with four 350 hp outboards to the Dry Tortugas. It was a 60-mile run, and we made it there in 70 minutes. We caught more fish than our arms could bear, and then dashed back to Key West, arriving in time for cocktail hour on the same day. -Jim Hendricks, Staff Editor, Boating and Fishing Group

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Evolution of the Ama

By Walter Guild Note: Walter Guild, Past OCC President, Winged “O” and veteran waterman has been a part of the Club’s canoe racing program for more than 40 years, paddling in his first race in 1971. He paddled on numerous HCRA and OHCRA championship crews and has won eight Molokai Hoe championships. He served on the OCC Canoe Racing Committee for many years, was head coach, and was active on OHCRA and HCRA race rules and canoe committees. Walter shares his knowledge of the evolution of the ama, the float that turns an outrigger canoe hull into a catamaran. He explains how Outrigger members were directly responsible for the molded koa/fiberglass ama used by today’s modern canoes.

Koa canoes were the standard before fiberglass boats were used. They weren’t built very often. There were very few of them and they didn’t change very much. The traditional Hawaiian canoe had a calabash shape with a very round bottom. It was a shorter boat generally 36-38 feet long with a lot of banana rocker shape to it. When you think of what an outrigger canoe is, it’s really a catamaran. The double hulled sailing canoe is a true catamaran but the Hawaiian outrigger canoe really needed two hulls. One was smaller than the other to make it more maneuverable and lighter and easier to move around.

The shape of the ama followed the contours of the hull because it needed to do what the hull could do to surf well, turn well and things like that. It wouldn’t do any good to have this real curved surfable, maneuverable hull and then have this straight knife-like ama out there doing its own thing.  Over the years ama didn’t change very much. They were very round and banana-shape. The other thing that made it difficult was that the canoes were made of koa and the ama was made of wiliwili.

The Hawaiian Canoe Racing Association rules stated that an ama had to be made out of Hawaiian wood. They didn’t designate what indigenous Hawaiian wood but wiliwili was used most often. It made sense because it was the lightest; basically it is a cousin of balsa wood. You didn’t need to build many ama. You’d build an ama out of wiliwili and use it for 20 years. Wiliwili was hard to come by and the wood was very unstable. The bugs would eat it easily if you were trying to store it to get enough to build an ama. A lot of times you’d go back to your stash and it would all be dust. Building a wiliwili ama was a real hard thing to do.

In the late 1970s when the Tahitian boats started to influence design OCC’s Tommy Conner got involved with building the first newer designed boats. He also designed some new ama that went with his boats. They followed the concept of the shape of the boat so they got narrower, longer and more square-shaped on the bottom.

Tommy was the one who really started to play with shapes. He would shape the ama out of foam and since they weren’t being used on koa boats they could be changed often if one broke or you wanted to try something new; it wasn’t as dramatic as building a wiliwili ama and having to go through the whole process. Tommy could build it out of foam, shape it like you would a surfboard, and fiberglass it.

In the mid 1980s following the transition to the newer hulls, several OCC members (Jeff Kissell, Hank Lass, Bob Riley and Walter Guild) owned the Fiberglass Shop which manufactured fiberglass canoes. Lass commissioned OCC member Joe Quigg (builder of the Kaoloa) to shape an ama with Joe’s interpretation of what a modern ama should be. It was similar to what Tommy had done but was a little more refined.

Joe’s ama was named after an old wiliwili ama that the Club had, referred to as the Channel Master because we used it in the Molokai Channel. We used Joe’s ama for a couple of years as a foam core ama. We asked Joe for permission to mold it and made it into a production ama so it could be used on the new outrigger canoes that were coming out, including the Hawaiian Class Racer.

It advanced certain things. Traditionally, when you lashed the ama to the ‘iako, you wrapped the cord all around the ama and the strings on the bottom dragged in the water. We started putting holes in the ama for the cords to pass through, keeping the bottom of the ama clean. We also straightened and lengthened the ama and in many cases made it squarer on the bottom. The designs began to optimize water line and buoyancy for speed and flotation. The squarer bottom created more lift and helped the ama stay up on the surface more than a round bottom.

The volume also increased because we were able to keep the ama light enough and on the surface enough that being bigger wasn’t as much of a handicap. If you built a wiliwili ama bigger, it would be heavier and drag deeper in the water. We were able to get them light enough, and because of the shape, we could make them larger which created something very important: reserve buoyancy. In the Molokai Channel on a trade wind day, the wind and swell is hitting from the right side of the boat and putting all the weight on the ama. So if the ama has volume where you can keep it on the surface the boat, rather than dragging the ama, will operate on the surface more like a catamaran.

The effect of an ama on a canoe is similar to skiing, if you were to keep the weight even on the two skis. If you put the weight on the downhill ski that ski will take over the turning of the unweighted ski and actually steer the ski. So if you’re in a boat and the ama is compressed, rather than riding on the bottom of the ama, all its weight is on the side of the ama and it wants to push the boat to the right, causing the steersman to lose control. You want to keep it as level as possible and that’s why we added volume to keep it more catamaran and more balanced.

In the late 1980s we had a great deal of trouble coming up with new ama. We had new hulls being built but we didn’t have updated ama. The wiliwili building process was very difficult.  So we looked at the HCRA racing rules and they didn’t specify that the ama be built out of wiliwili. The rules didn’t specify that the ama had to be shaped, but they did allow for them to be covered with fiberglass. They also didn’t state whether you had to build an ama from the inside out or the outside in. They didn’t specify that you couldn’t use a mold to shape the ama. The rules just said that the ama had to be made out of Hawaiian wood and could be covered with fiberglass.

So we did a prototype of a molded ama using the Channel Master mold. With a process of vacuuming we put fiberglass in, pressed koa veneer into the mold and put more fiberglass behind it and made the same shape ama that the fiberglass boats had; meeting the racing rules. And then we asked HCRA for its blessing which they gave us. Hence, most of the ama began to be molded ama instead of hand shaped. This was revolutionary for the koa canoes.

The first time we used the koa/fiberglass ama on the Kaoloa in a race, the race officials challenged us on its compliance with race rules. We told them they could drill anyplace they wanted to confirm that it was built with Hawaiian wood. They selected a spot and drilled and found the koa. We taped it up and used it the rest of the day. Afterward I patched the ama and put a red tape x over the place they drilled. We used the ama that way for a long time. There were no further challenges.

With HCRA’s acceptance of our ama, designs have changed and new ones have come out. Now you can quickly get a koa version ama you can use on your koa boat, relatively inexpensively compared to a hand-shaped wiliwili ama. The new ama are much more durable, stronger and lighter.

When the Fiberglass Shop closed, its molds were taken to Windward canoe builder Karel Tresnak Sr. The OCC ama for the Kaoloa and Kakina that we’re using now were built by Tresnak. Most canoe makers also make molded ama today based on those early Joe Quigg models.

One man canoes use a similar process for their ama. Instead of using wood they use a lighter weight core material that is more pervious; resin goes through it better to make them stronger.

There have been a lot of changes in canoes and racing in the last 50 years, but the acceptance of a molded ama was one of the most revolutionary.

What Is A Catamaran Boat? (A Comprehensive Guide)

Are you looking for a smooth, stable, and spacious boat? Then a catamaran boat may just be the perfect choice for you! Catamaran boats are becoming increasingly popular for their impressive stability, roomy design, and superior performance.

In this comprehensive guide, we will provide you with all the facts you need to know about catamaran boats , from the different types available to the advantages and disadvantages, as well as important information about maintenance and care.

By the end, you will be able to make a well-informed decision about whether a catamaran boat is right for you.

So, let’s dive right in and explore the world of catamaran boats!.

Table of Contents

Short Answer

A catamaran boat is a type of vessel with two parallel hulls of equal size.

It is typically used for leisure, sport and racing.

Catamarans are known for their stability and speed in a variety of water conditions.

They are also known for their shallow draft, making them a great choice for cruising in shallow waters.

What is a Catamaran Boat?

A catamaran boat is a type of vessel that is characterized by two parallel hulls.

This unique design provides the boat with exceptional stability and ease of maneuvering.

As a result, catamarans are becoming increasingly popular for leisure and commercial purposes due to their comfort and safety.

The design of a catamaran boat allows it to be much larger and heavier than traditional monohull boats, yet still maintain a higher speed and efficiency.

This makes catamarans an ideal choice for a wide range of activities, including sailing, fishing, and water sports.

Additionally, the two hulls can be configured to provide living spaces that are much larger than those found in monohull boats, making them an ideal option for long-term voyages and other extended trips.

Due to their stability and maneuverability, catamarans have become a popular choice for a variety of commercial purposes, such as ferry services, as well as for recreational activities.

As such, they are available in a wide range of sizes and configurations, from small models designed for sport and recreation to larger vessels designed for commercial use.

No matter what type of activity youre looking to do, a catamaran boat can provide you with the stability and comfort you need to enjoy a safe and enjoyable experience.

With its unique design, a catamaran boat can provide you with an efficient and enjoyable way to explore the seas and waters around you.

Types of Catamaran Boats

Catamaran boats come in a variety of sizes, shapes, and styles, making them a great option for a variety of recreational and commercial activities.

There are two main types of catamaran boats: sailing and power catamarans.

Sailing catamarans typically feature two or more hulls connected by a frame and are propelled by the wind in the sails.

These boats are ideal for sailing, fishing, and other leisure activities, and they provide increased stability, speed, and efficiency compared to traditional monohull boats.

Power catamarans, on the other hand, are powered by motors and are designed for speed and efficiency.

These boats are often used for commercial activities such as ferrying passengers and cargo, as well as for leisure activities such as fishing and water sports.

Some power catamarans feature specialized designs for specific purposes, such as dive boats or luxury yacht charters.

No matter what type of catamaran you choose, its important to make sure that it is properly outfitted for your intended activity.

For sailing catamarans, this means checking the sails and rigging for wear and tear, and for power catamarans, making sure that all of the mechanical components are in good working order.

Safety is also a key consideration when choosing a catamaran.

Make sure to check and follow all applicable safety regulations and equipment requirements.

Additionally, its important to make sure that the boat is properly insured and that all of the necessary safety equipment is on board.

By doing your research and making sure that the catamaran you choose is the right one for your intended use, you can ensure that your time on the water is enjoyable and safe.

Advantages of Catamaran Boats

Catamaran boats offer a range of advantages over traditional monohull boats.

For starters, they are much more stable than their monohull counterparts.

This is due to the two separate hulls that provide balance and stability, even in rough water conditions.

This makes them ideal for activities such as sailing, fishing, or water sports.

Additionally, catamarans are much faster and more efficient than monohull boats, which makes them perfect for long-distance sailing trips.

Catamarans also provide more space than traditional vessels.

This is due to the two hulls, which allow for larger decks, cabins, and other amenities.

This makes them ideal for larger groups of passengers and more activities.

They are also much more comfortable than monohulls, as the two hulls provide more cushioning and less rocking.

Finally, catamarans are becoming increasingly popular for both leisure and commercial purposes.

This is due to the fact that they are much more stable, efficient, and comfortable than monohulls.

They are also much more affordable than traditional vessels, making them an attractive option for both recreational and commercial boaters.

With all these advantages, its no wonder why catamarans are becoming increasingly popular.

Disadvantages of Catamaran Boats

Catamaran boats are an excellent choice for recreational and commercial use, but there are some disadvantages that must be taken into consideration.

First, catamarans are typically larger and heavier than traditional monohull boats, making them more difficult to store and transport.

Additionally, they can be more expensive to purchase and maintain than other types of boats.

Furthermore, although catamarans are known for their stability, they are not as good at handling rough seas and can be more easily affected by wind and waves.

Finally, catamarans may not be good for people who want to go very fast, as they are not as fast as some other types of boats.

In summary, catamaran boats have some great advantages, such as their stability and comfort, but they also have some drawbacks that must be taken into consideration.

They are more expensive to purchase and maintain, they are heavier and more difficult to store and transport, and they may not be suitable for people who want to go very fast.

How to Select the Right Catamaran Boat

Choosing the right catamaran boat is an important decision.

You need to consider your budget, the size of the boat, and the type of activities you plan on doing.

When selecting a catamaran, you should consider the following: 1.

Budget: How much money do you have to spend on the boat? This includes the purchase price and any additional costs, such as maintenance and repairs.

Size: Catamarans come in a variety of sizes, from small sailboats to large luxury yachts.

Consider the size of the boat and how much space you need for passengers and gear.

Usage: What type of activities do you plan on using the boat for? If you plan on using it for recreational activities such as sailing, fishing, and watersports, you may want to select a boat that is specifically designed for those activities.

If you plan on using it for commercial purposes, such as ferrying passengers or freight, you may want to select a boat that is designed for that purpose.

Design: Catamarans come in a variety of shapes and designs.

Think about the type of boat you want and research the different types of catamarans available.

Performance: Performance is an important factor to consider when selecting a catamaran.

Research the boats speed, fuel efficiency, and maneuverability.

By considering these factors, you can ensure that you select the right catamaran boat for your needs.

Be sure to also research reviews of different models to make sure you are getting a quality boat.

With the right catamaran, you can enjoy a safe and comfortable experience on the water.

Maintenance and Care of Catamaran Boats

Maintaining and caring for a catamaran boat is just as important as selecting the right model for your needs.

This type of vessel requires regular care and maintenance to ensure it remains in excellent condition and safe to use.

Proper maintenance and care will also extend the life of the boat and help prevent expensive repairs in the future.

When it comes to maintaining a catamaran boat, the most important step is to inspect it regularly.

This involves looking for any damage, such as cracks in the hull or any other signs of wear and tear.

It is also important to check the rigging and make sure any ropes and lines are not frayed or worn.

If any damage is found, it should be fixed as soon as possible to prevent further damage.

In addition to inspecting the boat, it is important to regularly clean and wax the hulls to prevent a buildup of dirt and grime.

This will also help to maintain the boat’s appearance and protect the surface from UV rays.

It is also important to check the engine regularly to ensure it is running properly and to check the batteries for any damage.

If the engine is not running properly, it is important to have it serviced immediately.

Finally, it is essential to ensure the boat is stored properly when not in use.

This includes covering it with a tarp or boat cover to protect it from the elements.

It is also important to ensure the boat is secured in a dry, well-ventilated area with no direct sunlight.

This will help to protect the boat from corrosion and other damage caused by harsh weather conditions.

By following these simple maintenance and care tips, catamaran boat owners can ensure their vessel remains in excellent condition and safe to use.

Regular maintenance and care will also ensure the boat lasts longer and remains reliable for years to come.

Popular Uses of Catamaran Boats

Catamaran boats are becoming increasingly popular for both leisure and commercial purposes due to their stability and comfort.

They are an excellent choice for those who enjoy recreational activities such as sailing, fishing, water skiing, wakeboarding, and more.

Catamarans are typically larger and heavier than traditional monohull boats but are much faster and more efficient.

Catamaran boats offer superior stability, which makes them ideal for activities where you need to remain steady, such as fishing and water skiing.

For those who want to take it a step further, catamarans are also great for racing, due to their speed and maneuverability.

In terms of luxury and comfort, catamarans are a great choice.

They offer a larger interior space than a traditional monohull boat, meaning you can fit more people and amenities on board.

Catamarans also offer more living space in the form of a larger deck and greater headroom.

This makes them perfect for entertaining and relaxing, as well as providing plenty of space for fishing and other activities.

Catamarans are also becoming increasingly popular for commercial purposes.

They are great for ferrying passengers and cargo, due to their larger capacity and greater stability.

This makes them perfect for island transport and other commercial applications.

Catamarans are also becoming popular for eco-tourism, as they offer a quieter, more eco-friendly way to explore.

Overall, catamaran boats are a great choice for those who want to enjoy recreational activities, entertain, or transport passengers and cargo.

They offer superior stability and comfort, as well as greater speed and efficiency than traditional monohull boats.

Whether youre looking for a recreational boat or a commercial vessel, a catamaran is an excellent choice.

Final Thoughts

Catamaran boats are an increasingly popular choice for leisure and commercial activities due to their stability, speed, and comfort.

There are a variety of catamaran boats to choose from, each offering their own unique advantages and disadvantages.

To make sure you select the right catamaran boat for your needs, its important to consider all factors, such as size, cost, and maintenance.

With proper care and maintenance, catamarans can provide years of reliable and enjoyable service.

Now that you know the basics of what a catamaran boat is, why not take a look at the different types and find the perfect one for your next sailing adventure?.

James Frami

At the age of 15, he and four other friends from his neighborhood constructed their first boat. He has been sailing for almost 30 years and has a wealth of knowledge that he wants to share with others.

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• Catamaran Canoe Trip

Canoe Trip For the Family with Small Children

Why a Catamaran Canoe Trip?

Over the years many parents have asked us, “What is the average age of children before parents will start bringing them on Boundary Waters trips?” On average we would have to answer about 10 years old. But there is no height limit like at the amusement parks, and there is no age limit. It all depends on how comfortable you are with your canoeing, camping, and survival skills and whether you feel that you would be able to take care of your children when the conditions become less than ideal. Kids under the age of about 14 rarely carry their own weight while on a canoe trip. And where this becomes an issue is when a young child has to be the bow paddler in a canoe. But not anymore. We want you to be able to experience the Boundary Waters with your young kids without the worry and anxiety of swamping your canoe. So we’ve developed the “swamp-proof” Catamaran Canoe to help put your worries to rest. A catamaran canoe is two aluminum canoes fastened together to provide stability and reduce the risk of swapping.

Catamaran Canoe is Ideal for Young Children

To help make this possible, we’ve developed what we’re calling our “catamaran canoe” to provide you with the stability necessary when paddling with smaller children. A Boundary Waters trip with your kids will help build a special bond between you that only this area can. The BWCA teaches children how to respect nature. The rules that are set inside the park should be practiced at every campground throughout the country. An experience like this will open the eyes of your young kids and hopefully leave a lifelong impression on them to practice the “Leave No Trace” wilderness ethic in their daily lives.

Basic survival skills are learned in this wilderness. Special bonds are built between parent and child that will last forever, and the sooner you can experience a trip like this, the better. Plant the seed early in life and it will produce for you over and over again as your children grow and mature into adulthood.

A base camp on Seagull Lake is a wonderful beginning trip to introduce your children to this magnificent area. Put your anxiety to rest in our catamaran canoe and watch your child’s face light up as they discover the many wonders of the Boundary Waters.

Advantages of the Catamaran Canoe Trip

• Much more stable than a regular canoe
• Fishing in general becomes so much easier from this watercraft. Fishing in the wind from a canoe is downright brutal and impossible at times. With an anchor and this steady craft, you’ll be able to sit over your favorite fishing holes with ease.
• Perfect for canoe camping trips with smaller children
• Base camping on the big part of Seagull Lake is easier when the wind blows with the catamaran canoe
• Fly fishing the shorelines becomes easier with the option to stand and fly cast
• It’s the next best thing to a boat and motor (and since they aren’t allowed inside the BWCA, we’ve got the best thing out there) if you’re looking for stability and comfort while still enjoying what the BWCA has to offer

Canoe Trip Packages

Complete Canoe Outfitting – View what is included with this package. Pricing will depend on the number of people in your party and how many days you stay in the woods. Email or call 1-800-346-2205 for details and pricing.

Do you have all of your camping gear?  Maybe you want us to pack your food for you. If so, check out our Food and Canoe page.

Do you need a few select items?  Look at our Equipment Rental page for our ala carte camping price list.

Things to do and see on Seagull Lake

• Blueberry picking on Miles Island
• Explore Three Mile Island and view the 1,000-year-old white cedar trees as well as the 500-year-old white pine trees (both species are the oldest in all of Minnesota)
• Fishing at: Alpine Rapids, Hoover Island, Palisades, Shirttail Point, Seagull Rock, etc.
• Swimming at the sandy beach campsite on the north Seagull shore
• Explore any of the 130 islands that pepper the lake
• Photograph the countless wildlife and scenic opportunities found throughout one of Minnesota’s most prized lakes
• Hike the 1.6 mile Jap portage and look for juneberries and blueberries
• Have lunch at Picnic Point by the Alpine Lake portage
• View the huge eagle’s nest on Eagle’s Nest Island
• Hike the .7 mile Grandpa Lake portage on the Northside of the lake
• More than anything else, relax and enjoy nature

To Reserve Your Catamaran Canoe Trip with Seagull Canoe Outfitters call: 218-388-2216 or on-line reservation and inquiry form,  click here . 

We had a great time on Seagull Lake. . . your routing suggestions, including campsite knowledge and the trailhead up the Palisades, were extremely useful! You can quote me on that. Thanks for the wonderful trip that you outfitted my party in August. The Boundary Waters lived up to all that I had hoped for and the package you had prepared for us was more than adequate for the time we spent in the canoe area. Thanks again for the memories that you made possible and I will be reserving my trip with you next August. Thanks for everything.

I just wanted you to know how much we enjoyed our trip this year. Your staff was excellent as usual, they made us feel like we were the only ones there. Everyone was very courteous and helpful and in my opinion, you have the best staff and best services around. This was my 8th trip and my son’s 6th and I can’t begin to tell you how much fun we had. We saw moose, bear, eagles, otter, mink, chipmunks, snakes, ducks, and loons. We are looking forward to next year.

Overall Map of Seagull Lake

* red dots on the map denote camp sites

For information or reservations call: 218-388-2216

What our customers say....

Hi Deb! I wanted to thank you and your team for a wonderful trip! Food was great, equipment top notch and always a friendly smile! The grandkids had an experience they won’t soon forget!  They already want to come back! Thanks for everything! Lori and Larry Stearns and Family Stearns Family July 31, 2020

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Catamaran Design Formulas

• Post author By Rick
• Post date June 29, 2010
• 10 Comments on Catamaran Design Formulas

Part 2: W ith permission from Terho Halme – Naval Architect

While Part 1 showcased design comments from Richard Woods , this second webpage on catamaran design is from a paper on “How to dimension a sailing catamaran”, written by the Finnish boat designer, Terho Halme. I found his paper easy to follow and all the Catamaran hull design equations were in one place.  Terho was kind enough to grant permission to reproduce his work here.

Below are basic equations and parameters of catamaran design, courtesy of Terho Halme. There are also a few references from ISO boat standards. The first step of catamaran design is to decide the length of the boat and her purpose. Then we’ll try to optimize other dimensions, to give her decent performance. All dimensions on this page are metric, linear dimensions are in meters (m), areas are in square meters (m2), displacement volumes in cubic meters (m3), masses (displacement, weight) are in kilograms (kg), forces in Newton’s (N), powers in kilowatts (kW) and speeds in knots. 

Please see our catamarans for sale by owner page if you are looking for great deals on affordable catamarans sold directly by their owners.

Length, Draft and Beam

There are two major dimensions of a boat hull: The length of the hull L H  and length of waterline L WL  . The following consist of arbitrary values to illustrate a calculated example. 

L H  = 12.20      L WL  = 12.00

After deciding how big a boat we want we next enter the length/beam ratio of each hull, L BR . Heavy boats have low value and light racers high value. L BR  below “8” leads to increased wave making and this should be avoided. Lower values increase loading capacity. Normal L BR  for a cruiser is somewhere between 9 and 12. L BR  has a definitive effect on boat displacement estimate.  

• Tags Buying Advice , Catamaran Designers

Owner of a Catalac 8M and Catamaransite webmaster.

10 replies on “Catamaran Design Formulas”

Im working though these formuals to help in the conversion of a cat from diesel to electric. Range, Speed, effect of extra weight on the boat….. Im having a bit of trouble with the B_TR. First off what is it? You don’t call it out as to what it is anywhere that i could find. Second its listed as B TR = B WL / T c but then directly after that you have T c = B WL / B TR. these two equasion are circular….

Yes, I noted the same thing. I guess that TR means resistance.

I am new here and very intetested to continue the discussion! I believe that TR had to be looked at as in Btr (small letter = underscore). B = beam, t= draft and r (I believe) = ratio! As in Lbr, here it is Btr = Beam to draft ratio! This goes along with the further elaboration on the subject! Let me know if I am wrong! Regards PETER

I posted the author’s contact info. You have to contact him as he’s not going to answer here. – Rick

Thank you these formulas as I am planning a catamaran hull/ house boat. The planned length will be about thirty six ft. In length. This will help me in this new venture.

You have to ask the author. His link was above. https://www.facebook.com/terho.halme

I understood everything, accept nothing makes sense from Cm=Am/Tc*Bwl. Almost all equations from here on after is basically the answer to the dividend being divided into itself, which gives a constant answer of “1”. What am I missing? I contacted the original author on Facebook, but due to Facebook regulations, he’s bound never to receive it.

Hi Brian, B WL is the maximum hull breadth at the waterline and Tc is the maximum draft.

The equation B TW = B WL/Tc can be rearranged by multiplying both sides of the equation by Tc:

B TW * Tc = Tc * B WL / Tc

On the right hand side the Tc on the top is divided by the Tc on the bottom so the equal 1 and can both be crossed out.

Then divide both sides by B TW:

Cross out that B TW when it is on the top and the bottom and you get the new equation:

Tc = B WL/ B TW

Thank you all for this very useful article

Parfait j aimerais participer à une formation en ligne (perfect I would like to participate in an online training)

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Boat Sailor

Sailing a canoe: a beginner’s guide to harnessing the wind.

Sail a canoe, an exhilarating blend of paddling and sailing, opens up a world of adventure on the water. The graceful glide of a canoe, propelled by the wind, offers a unique and rewarding experience for water enthusiasts. In this guide, we’ll explore the art of canoe sailing, offering helpful suggestions and reasons for harnessing the wind in your canoeing journey.

Getting Started with Canoe Sailing

To embark on your canoe sailing adventure, the first step is to select the right canoe. Ensure it is stable and suitable for sailing. Additionally, gather essential equipment such as a well-cut sail, a leeboard for stability, and a rudder for steering. Safety is paramount, so don’t forget to wear a life jacket and bring necessary safety gear.

Understanding the Wind and Sail Positioning

A crucial aspect of canoe sailing is reading the wind and understanding weather conditions. Positioning the sail and leeboard correctly is essential for effective sailing. The rudder plays a vital role in maintaining control, so familiarize yourself with its usage.

Launching and Setting Sail

With the canoe prepared, it’s time to launch it and set sail. Position the canoe sideways to the wind and adjust the sail to prevent flapping. Once the sail is set, gradually turn the canoe toward the wind direction while maintaining forward movement.

Sailing Upwind

Sailing upwind requires finesse. Learn how to sail closer to the wind by carefully adjusting the sail and maintaining momentum. With practice, you’ll be able to navigate upwind with ease, expanding your sailing possibilities.

Advanced Techniques for Canoe Sailing

Take your canoe sailing to the next level with some advanced techniques. Improvised sails using tarps and paddles can be an excellent option for adventurous spirits. Additionally, constructing a canoe sail rig with a properly positioned leeboard offers enhanced stability and ease of steering.

Learning from the Pros

Be inspired by the stories of seasoned canoe sailors who have embarked on remarkable sailing adventures. Gain valuable insights and practical tips from their experiences to improve your own sailing skills.

Canoeing Basics for Beginners

Before diving into canoe sailing, it’s crucial to grasp the fundamentals of canoeing. Understand the bow and stern locations, and get familiar with proper seating arrangements. Proper weight distribution enhances stability and improves the overall canoeing experience.

Exploring Tandem Canoeing

Tandem canoeing, where two paddlers work in sync, offers an enjoyable and rewarding experience. Learn about the benefits of tandem canoeing and consider enrolling in canoeing courses to build your skills and confidence.

Choosing the Right Canoeing Location

Selecting the right location is key to a successful canoeing experience. For beginners, calm and warm waters near the shore are ideal. Consider renting a canoe package that provides all necessary equipment, making your journey hassle-free.

Sailing a canoe blends the joy of paddling with the thrill of harnessing the wind. Embrace this adventurous journey and let the wind carry you to new and exciting destinations. Discover the true essence of canoeing as you explore the beauty of nature from a unique perspective, guided by the wind and your adventurous spirit.

Is canoe sailing suitable for beginners?

Canoe sailing can be enjoyed by beginners, especially when equipped with basic canoeing skills. Starting with tandem canoeing allows for easier control and a smooth introduction to sailing.

What equipment do I need for canoe sailing?

For canoe sailing, you’ll need a well-cut sail, a properly aligned leeboard, and a rudder for steering. Don’t forget to wear a life jacket and bring essential safety gear.

Can I improvise a sail for my canoe?

Yes, you can improvise a sail using tarps and paddles. It’s a creative and adventurous way to experience canoe sailing.

Are there specialized canoe sail rigs available?

Yes, you can construct a canoe sail rig using specific dimensions and materials. It enhances stability and ease of steering, making sailing a breeze.

What’s the best location for beginners to practice canoe sailing?

Beginners should choose calm and warm waters near the shore. This provides a safe and comfortable environment for practicing canoe sailing skills.

Michael Thompson

Embarking on a lifelong love affair with the sea, I found solace and exhilaration in the art of sailing. From navigating treacherous waters to harnessing the wind's untamed power, my passion has evolved into a mission to inspire others. Join me on a voyage of discovery as we explore the vast horizons of sailing's timeless allure.

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The joy of French Polynesia’s traditional multihulls

• June 4, 2021

For over a decade, photographer Julien Girardot has been captivated by the traditional multihulls of French Polynesia and a dream of bringing sailing canoes, or pirogues, back to the motus

I arrived in French Polynesia as a cook and photographer on the scientific research yacht Tara , just passing through. But I ended up settling here for a decade; partly because of my passion for sailing pirogues but also because, as a photographer, Tahiti and her islands are a true blessing.

When you think about French Polynesia, you think of traditional multihulls . Before I arrived I read about navigation by the stars, and the ancient history of Polynesians who sailed the Pacific to populate the islands of the Polynesian Triangle.

Before the adventure really began, we met in Tahiti to try out a canoe belonging to one of Ato’s friends. Five minutes after this picture, we reached the beach in a panic, the pirogue was sinking. But seeds have been sown…

I planned to spend one month in Tuamotu, and told myself that I’d hang out with the locals and sail with them aboard their epic outriggers.

Living on Fakarava, an atoll in the Tuamotu Archipelago, I became friends with my neighbour, Ato. One day I asked him: “Ato, where are all the sailing canoes?”

He told me that when engines first arrived in French Polynesia with the ‘popa’a’ (white people) and the nuclear testing programme in the 1960s, the locals were quickly impressed by having so much power with so much ease. No more sails to manage, no more tricky boatbuilding…

The nuclear test programme needed manpower and many Polynesians were hired. T hey started to earn something new for them: money. Islanders embraced modernity, and the sailing canoes were soon gone . 

One day, as we were exploring a motu, I asked Ato: “Shall we build a sailing canoe?” He said yes straight away.

After Tara I came back to Fakarava and we launched a non-profit organisation to realise the dream or returning traditional multihulls to the island.

Va’a Iti, starting small

Va’a Iti means ‘little canoe’ in Tahitian. As our first project we set out to develop a single-seat trimaran for a hotel in Bora Bora that wanted a model with a Polynesian look but that would very easy to use.

Nestled in the bottom of a valley is the Va’a Iti construction site – Alexandre and his partner Charlotte’s garage. Photo: Julien Girardot

Working with Alexandre Genton, a talented local boatbuilder, we built a canoe based on a V1 canoe, which is a sport paddling canoe with one outrigger.

Single outrigger canoes are an institution in Polynesia, and Polynesian champion paddlers dominate the podiums at international competitions.

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This was my first canoe construction and the design was successful, though I came to understand what an old seadog I had met a long time ago in St Malo meant when he told me: “When it comes to boats, the best way to end up a millionaire is to start out as a billionaire!”

But what I gained by living this project was much more valuable than the money.

The next build was a larger Va’a Motu for the hotel, whose owner wanted a modern version of a traditional canoe for their beach club.

The single-seat Va’a Iti trimaran developed for a hotel in Bora Bora. Photo: Julien Girardot

This canoe was 20ft long, built of kauri wood using strip planking, while the rig was made from carbon windsurf masts. There is no rudder so the sailor helms in the traditional Polynesian way, with a paddle in the water.

A dream, Te Maru O Havaiki

Te Maru O Havaiki means ‘the shadow of Havaiki’ and is the realisation of a dream – or certainly of the fantasy that I had as a first-time visitor to the Pacific.

Now, I understand that for French Polynesian locals what is past is past. Here people think of the now, the present. The future and past are not so important; it’s another perception of life. They say of people in the islands: ‘They’ve got the time, and people from busy cities, they’ve got the clock.’

Making the two ‘iakos’, the linking spars that connect the ama to the main hull. Construction was complex due to their shape, with marine plywood, strip planking and hard foam core wrapped in composite. Photo: Julien Girardot

Te Maru O Havaiki is a 30ft Va’a Motu (outrigger canoe) designed by a local architect, Nicolas Gruet, and also built by Alexandre Genton.

The build created the opportunity to train two young people from Fakarava, and one of these young men, Toko, hung in right to the end of the construction. He proved to be an excellent laminator as well as disconcertingly natural at sailing the 30ft canoe, which is not an easy machine for a beginner to handle. The Paumotu people have an incredible ease with the water.

For the children, there was the tradition of the ‘titiraina’, a model of a sailing dugout they played with and raced; a fun game which also allowed them to understand the wind and the sea from a very young age. Photo: Julien Girardot

The project secured sponsorship from the French marine preservation agency, which gave us almost €40,000. They liked the local values and tradition, but the most interesting element for them was the scientific element of the project. For them we had to map an area of Fakarava’s lagoon using kites equipped with cameras!

For more than two months we sailed almost every day, skimming the lagoon from east to west and from north to south, sometimes camping rough for two or three nights to explore further.

During each outing we learned a little more, and gained confidence by sailing with the same crew.

We start to dare to sheet on a little more. The canoe is fast, but on one tack it is unstable. Whenever we tack, we shake out or put in a reef, it’s a delicate balancing act. Others, more courageous than us, sailed with just two people, and later were able to turn by gybing. Three crew is fine, but you have to reef… four is better, five is ideal.

Polynesian celebrations for Te Maru O Havaiki’s launch day. Photo: Julien Girardot

In the end, a government inspector from maritime affairs decided, after a stability test, not to register the dugout because it is too unstable. He is not a sailor, nor Polynesian, but freshly arrived from Dunkerque, where his job was to license cargo ships.

I don’t think he understood the importance of the shape of our canoe and it was painful at the time, but understandable with hindsight.

The dugout canoe in this configuration, with only one ama, will not be a 100% safe boat. Instead we will transform the canoe into a trimaran. The Va’a Motu association reconvened to re-elect a new board in April 2021. Now we will write a second chapter, but this time in a trimaran. Te Maru O Havaiki continues to tell the story of the evolution of multihulls.

If you enjoyed this….

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Who's right Who's wrong? Is A Canoe Stern Better Performing Than A Double Ender?

Discussion in ' Boat Design ' started by kudu , Sep 29, 2005 .

kudu Senior Member

I've been scanning this site trying to to get a firm answer to my question...IS A CANOE STERN A BETTER PERFORMING STERN THAN A DOUBLE ENDER???? It seems that there are many theories floating around, who's right...who's wrong???  

Willallison Senior Member

kudu said: It seems that there are many theories floating around, who's right...who's wrong??? Click to expand...

LP Flying Boatman

Forgive my ignorance, but what is the difference?  

FAST FRED Senior Member

define better "Performing" FAST FRED  

SailDesign Old Phart! Stay upwind..

kudu said: IS A CANOE STERN A BETTER PERFORMING STERN THAN A DOUBLE ENDER???? Click to expand...

Bergalia Senior Member

who's right who's wrong ? As my colleagues point out, Kudu, a canoe stern IS a double-ender. And it's a valid question - what do you mean by performance. In a 'racing' hull there's no doubt that a 'fantail' creates less tumbleholme. But in heavy following seas a double-ender gives a greater sense of security(or in my case it did). Which begs the question - where do you intend to sail her. Inshore sheltered waters - or blue ocean. For an idea of a double-ender capabilities you might like to browse: www.mavc2002.com/caledoniayawl/aegre It is an account of a 20 foot Shetland foureen taking a 12,000 mile voyage acroos the Atlantic - well illustrated.  

dougfrolich Senior Member

A heavy slower boat will benefit more from a double ended design intended for bluewater, than a lighter faster boat, The transom of a TP52 for instance has Lots of volume, much more than a double ended design of the same length, for that reason as a following sea approaches (usually you would be over taking waves though) the transome rises with the wave, even with an open transom green water does not rush into the cockpit- even backing down in 25kts. to free debris from the underbody. The configuration may not make "feel" secure though. A heavier slower boat that finds itself being overtaken by waves and white water probably benefits from the back looking like the front for that reason- Strapped into a deep cockpit surrounded by high bulkworks adds to a "feeling" of security, But I think a modern cruiser will fall someware inbetween the two extreems.  

JonathanCole imagineer

How about for a catamaran for protected and inland waterways. Are there advantages to the double ended "canoe" type design. It seems to be that there would be less turbulence at the stern with a double ended design.  

yipster designer

that again depends on performance like forexample speed  

Skippy Senior Member

A double-ender will have more turbulence above hull speed, which is typical of light catamarans, than will a squared-off transom. Water separates cleanly from the square stern, leaving only air and a smooth water surface behind it. Whereas the canoe stern pulls the water in toward the centerline, forcing it to turn again quickly once the water flows on the two sides of the hull crash into each other. Ultimately, the square transom will start to plane if it reaches a high enough speed.  

safewalrus Ancient Marriner

Double ended catamaran? is that not a proa? two 'sharp ends' and you 'tack' the rig not the boat. Apparantly goes like smoke!  

Bergalia said: For an idea of a double-ender capabilities you might like to browse: www.mavc2002.com/caledoniayawl/aegre It is an account of a 20 foot Shetland foureen taking a 12,000 mile voyage across the Atlantic - well illustrated. Click to expand...

Aw, shucks. *blush* sw, a proa ama is usually narrower and at least slightly shorter than the main hull. On a Pacific proa, where the ama is on the weather side (lee side = Atlantic), the ama is much shorter and smaller than the hull. The hull is symmetric between the two ends, but can and ideally should be asymmetric between the windward and leeward sides. Whereas a canoe hull is symmetric along the centerline, and somewhat but often not quite symmetric fore-n-aft. The rig has to pass through a plane perpendicular to the hull and ama rather than parallel. Proa rigs also tend to do things that are not necessarily tacking. The tack of a traditional oceanic lateen is moved from one end of the boat to the other, and the Gibbons rig swaps head and foot interchangeably. You need two rudders, one on each end, and usually two centerboards to control the helm balance. Pacific proas reach fantastically because they're light and it's easy to fly the ama (hence the name "flying proa"). But I've been wondering recently whether they would point better than a cat, since the cat's big windward hull would provide more righting moment as long as you can fly it.  

I'm feeling quite foolish...I was under the impression that a double ended sailboat has a hull similar to the Colin Archer "Redningskoite" type boat or an Ingrid, and that a canoe type hull resembled the much broader transom shape of the Aage Walstead.  

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Skippy said: A double-ender will have more turbulence above hull speed, which is typical of light catamarans, than will a squared-off transom. Water separates cleanly from the square stern, leaving only air and a smooth water surface behind it. Whereas the canoe stern pulls the water in toward the centerline, forcing it to turn again quickly once the water flows on the two sides of the hull crash into each other. Ultimately, the square transom will start to plane if it reaches a high enough speed. Click to expand...

Who's qualified to do "detailed engineering analysis"?

IBEX, who's going to Kentucky?

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