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Definition of catamaran

Illustration of catamaran, examples of catamaran in a sentence.

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'catamaran.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Tamil kaṭṭumaram , from kaṭṭu to tie + maram tree, wood

1673, in the meaning defined above

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“Catamaran.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/catamaran. Accessed 21 Aug. 2024.

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Meaning of catamaran in English

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• cabin cruiser
• dragon boat
• As soon as the boat anchored, a catamaran put out, and brought Charlie and his followers to shore.  
• Next morning we were visited by a party of natives from the neighbouring island, consisting of six men in a canoe, and one on a catamaran or raft.  
• Soon we were surrounded with catamarans and canoes, with three or four natives in each.  
• The horses and cows were taken on a species of catamaran, or large raft, that is much used in those mild seas, and which sail reasonably well a little off the wind, and not very badly on.  
• When we reached the lagoon, a catamaran with three natives on it came off to us.  

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Definition of catamaran noun from the Oxford Advanced Learner's Dictionary

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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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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What Are Catamarans And Their History?

Catamarans are boats with two connected hulls that are joined by a bridge. Because they are faster, more stable, and capable of carrying larger cargo than their monohull counterparts, catamarans are growing in popularity.

As a result, designers and owners have greater freedom to accommodate space needs in terms of size and usefulness than they would with single-hulled vessels.

The name catamaran came from the Tamil word “kattumaram” which basically meant “logs which were bound together”. These traditional watercraft were basically used on the south coast of India and Srilanka. They were dated back to as early as the 5th century when they were used to transport troops from one island to another.

Let us get into more details to learn more about the different types of catamarans and their functions.

What are the different types of catamarans?

Catamarans are mainly divided into two categories: sailing and power catamarans, however, both categories can be split into smaller groups by their size and use.

Sailing catamarans

These types of catamarans are mainly propelled with help of sails. The sails act as wings with which the vessel moves forward with the help of wind energy. The sailing catamarans have advanced significantly in recent years in terms of both design and performance attributes. Sailing catamarans are further subdivided based on their dimensions and functions and are classified into,

Small, mini, or sports catamarans

Depending on the size, these are also known as leisure catamarans and can carry a load of 6 persons on average. You’ve definitely seen some of them speeding through your local beach waters on hot, sunny weekends; some of them are made to be driven by one person. Those designed for use in sports have a trapeze that enables one to hike out and serve as a counterweight.

Small-day sailing cats are well-liked because they offer a secure and straightforward learning environment, and you can see fleets of them in resorts where guests with little to no sailing experience utilize them. These little cats are often made of roto-molded plastic or fiberglass, and as they frequently lack auxiliary motors, sails are their only means of propulsion

A trampoline that spans the two hulls of the sports catamarans acts as a bridge so that individuals can move from one to the other without falling into the water. They may be launched and landed from a beach as opposed to a dock because of their modest size. They have a rotating mast and a mainsail with full-length battens.

Cruising Catamarans

In the worlds of long-distance cruising and bareboat chartering, larger cruising cats have dominated. These are more stable than their monohull competitors, allowing them to securely transport people across continents. These are more stable than their monohull competitors, allowing them to securely transport people across continents.

For maneuverability, charter cats frequently have two engines—one in each hull—as well as a mast that holds a mainsail and at least one headsail.

Nowadays, cruising catamarans are more widely available than monohulls at bareboat charter firms with tropical bases, and those numbers are rising in places like the Mediterranean.

Power catamarans

Power catamarans, often known as “multi-hull powerboats” or “power cats,” are vessels without masts or sails but with larger and more powerful engines. They can be the most perfect choice for your first boat if you enjoy offshore fishing or other water sports. You get a great balance of performance, stability, and maneuverability with these powerboats. Power cats come in a range of different sizes and shapes. In terms of dimensions and functions, they are also divided into,

Center console fishing catamarans

The fishing industry is flooded with smaller power cat brands, while bareboat charter and cruise platforms are seeing the emergence of larger ones. The multi-hull performance boat frequently has a center console driver layout.  They can reach higher top speeds thanks to their higher horsepower, but these cats also need to be strengthened hulls to support the weight and power of these engines.

When used for fishing, normally lesser than 50 ft, there are several options available for live wells, rod holders, gear storage, and built-in coolers for both fish and beverages. Depending on the length and design elements of the boat, certain consoles may locate closer to the bow or aft of the vessel.

Offshore powerboat racing catamarans

Offshore powerboat racing is the aquatic equivalent of off-road auto racing. Since its inception in the late 1960s, offshore racing has changed drastically.

Though V-bottom powerboat classes still exist, twin-engine catamarans with top speeds of 170 MPH in the most powerful classes dominate the sport.

The offshore race course may be the most dynamic setting in all of the motorsports because of the constant fluctuations in a swell, wind, tide, current, and other factors. The track might abruptly change from being friendly to antagonistic.

These boats are designed and built such that they are both lightweight but extremely strong using the most advanced materials like carbon fiber and Kevlar . Manufacturing methods such as infusion are adopted to make sure the properties of the materials are not lost during the production stages.

Motor yachts and ferries

For their roominess and speed, catamaran designs have also become popular among motor yachts and commercial passenger ferries. These cruise-centric yachts offer homelike livability for avid travelers, are fuel efficient, and are fairly intuitive to run.

Motor yacht catamarans have been designed with larger living spaces in mind, as well as more outdoor recreation places. The huge fly bridges provide additional space for relaxing and socializing, and electric boat davits make lifting the dinghy simple. Daily tasks like cooking can be done with ease because catamarans don’t heel.

Why Is There A Shift In Trend From Monohulls To Catamarans?

Recently, more and more often you can find catamarans in the harbors of large cities and small resorts. It can be unequivocally argued that catamarans are gaining popularity among both beginners and experienced sailors and even celebrities. But what makes them gain this popularity?

Catamarans In Terms Of Function And Utility

The enormous interior space expansion can provide the owners considerably more freedom to select furnishings without regard to size limits and more room for additional appliances like washers and dryers, which can make life on board much easier.

Due to their broader decks and roomier interiors, catamarans are frequently employed as party boats. The deck can accommodate more people without giving them the impression of being crammed into a small space.

In terms of storage, catamarans offer more alternatives than monohulls because both hulls can serve a variety of purposes, increasing the vessel’s overall capacity as well.

Catamarans are typically utilized as party boats since they have bigger deck spaces and greater room for movement. The deck can also accommodate more people without giving them the impression of being confined in a small space.

If any equipment breaks down, there is always a backup. For instance, if one of the engines on the port hull fails, we can always use the starboard engine to re-enter landfall. Likewise, if a generator breaks down, there is always a second generator that can be utilized as a backup.

Catamarans In Terms Of Performance And Stability

Due to the narrow hulls of catamarans, which serve to reduce drag forces, they frequently outperform monohulls. On performance power catamarans, the area in between the two hulls known as the “Tunnel” is built in a similar way to an aerofoil so that it behaves like a wing, boosting the aerodynamic lift forces and enhancing the overall effectiveness and top-end speeds of the craft.

Due to their stronger lift forces and lower water friction than monohulls, catamarans typically have a better fuel economy. This is because the strain placed on the engines as a whole is reduced, resulting in less fuel being used.

In terms of roll stability, catamarans are often more stable than monohulls. This offers them an advantage in terms of comfort and the ability to carry out various activities onboard the vessel with ease, as well as lowering the possibility of passengers falling on board. Because they are less likely to make passengers seasick, catamarans are typically used as ferries or passenger ships.

Catamarans provide a more comfortable ride whether they are in shallow water, deep water, or at anchor; they have a decreased chance of keeling over or capsizing in heavy winds.

Also, catamarans have a much lower draft when compared to their mono hull counterpart’s allowing them to easily ply over shallower waters.

What Are The Potential Drawbacks Of Catamarans?

Catamarans have a few minor limitations, much like any other kind of boat:

Finding dock space is frequently challenging and expensive for catamarans because they take up more room.

Power and sailing cats can both smash into the bridge deck when heading to the weather because of the way that they are built.

Additionally, because they have two hulls instead of one, sailing cats can’t necessarily aim as high into the wind as monohulls can.

Overall, a catamaran allows for greater speeds, but at the expense of much-reduced vessel control. Knowing when to accelerate and when to slow down is difficult when sailing a catamaran. A catamaran can be readily overturned in sea conditions that a monohull can maneuver securely in.

Finally, while it may be alluring to add more weight in a catamaran due to the space it provides, doing so will almost certainly degrade the performance of either power or sailing cat—something that is less of an issue on their monohull counterparts.

Catamarans are a growing trend due to their better advantages over their monohull counterparts. Despite having an ancient fundamental design, catamarans are a modern boating alternative that can be used by any boater for both commercial and leisure uses.

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About the author

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

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Catamarans: A Complete Guide to Multihull Boats

Catamarans have been a part of sailing history for centuries and continue to be popular for their stability, spaciousness, and performance. Developed by various cultures around the world, the principles of catamaran design have evolved over time to become optimized for both pleasure cruising and racing. This complete guide will help you understand the essentials of catamarans, their unique characteristics, and how to choose the right one for your needs.

From the basic concepts of multihull design, performance, and handling, we will explore the advantages and benefits of a catamaran in terms of safety and comfort on board.

Along the way, we will discuss maintenance considerations, distinctive catamaran brands and models, and how a catamaran lifestyle can compare to more traditional sailing options .

Finally, we will provide learning resources and frequently asked questions tailored to both seasoned sailors and newcomers to the world of catamarans.

Key Takeaways

• Catamarans are known for their stability, spaciousness, and performance
• This guide covers aspects like design, handling, safety, and choosing the right catamaran
• Resources and frequently asked questions provide additional insights for potential catamaran owners

Understanding Catamarans

Design Characteristics

Catamarans are known for their unique design, which features two parallel hulls connected by a deck. This design provides several advantages over traditional monohull boats, such as stability and speed.

With their wide beam, catamarans have a reduced risk of capsizing and can access shallow waters due to their shallow drafts 1 .

One of the notable aspects of a catamaran is its twin hulls, which offer increased living space and comfort compared to a monohull. Additionally, catamarans are often favored by recreational and competitive sailors for their excellent maneuverability 2 .

The materials used for constructing catamarans range from wood to fiberglass, and even aluminum for high-performance vessels. Aluminum catamarans are known for their strength, lightweight structure, and resistance to corrosion 3 .

Hulls and Construction

The hulls in a catamaran are crucial to its stability and performance. These hulls help distribute the weight evenly across the water surface, minimizing drag and allowing for smoother sailing.

In general, the hulls can be categorized into two types:

• Symmetrical Hulls : The hull shape is similar on both sides, which enhances balance and stability in various sailing conditions.
• Asymmetrical Hulls : One side of the hull is designed differently than the other, which can be advantageous when sailing upwind.

The construction materials used in building catamaran hulls also play a vital role in the boat's performance and durability. Common materials include:

• Fiberglass : A popular choice due to its lightweight, strength, and ease of maintenance.
• Wood : Traditional material that offers a classic look, but requires more maintenance than fiberglass or aluminum.
• Aluminum : Lightweight and strong, aluminum is an excellent choice for high-performance catamarans 4 .

Multihulls vs Monohulls

There's often a debate between the benefits of multihull boats, such as catamarans or trimarans, and monohull boats. Here are some key differences between the two:

• Stability : Due to their wide beam and reduced heeling, catamarans offer improved stability compared to monohulls. This makes them an attractive option for those who want to avoid seasickness or feel more comfortable on the water 5 .
• Speed : Multihull boats are known for their speed, which results from their ability to minimize drag and maintain a level sail.
• Living Space : Catamarans and other multihulls generally have more living space, as both the hulls and the connecting deck can be utilized for accommodation and storage.
• Maneuverability : While monohulls are known for their agility and ability to point close to the wind, catamarans can still offer exceptional maneuverability when properly sailed 6 .

Performance and Handling

Speed and Efficiency

Power catamarans have gained popularity for offering a unique combination of speed, efficiency, and stability. Their dual-hull design allows for less water resistance, which directly translates to higher speeds and better fuel efficiency compared to traditional monohull boats.

In addition, the wide beam provided by the two hulls ensures a stable ride even at higher speeds. This makes power catamarans ideal for cruising, fishing, and watersports ( Boating Beast ).

Sailing Dynamics

When it comes to sailing catamarans , the performance is affected by factors such as keel, rudders, mast, and sails.

Their wide beam and dual-hull design provide inherent stability and reduced heeling effect, making them less likely to capsize compared to monohulls.

I should also note that catamarans have a shallow draft, which gives them the ability to access shallow waters that may be off-limits to other boats ( Navigating the Waters ).

In my experience, the lighter weight of a catamaran and its aerodynamic design can contribute to remarkable sailing performance under different wind conditions.

The larger sail area relative to hull weight allows them to harness more wind power, further enhancing their speed and agility on the water.

Maneuvering and Docking

Maneuvering and docking a power catamaran involves understanding its unique handling characteristics.

The presence of two engines in separate hulls allows for more precise control in confined spaces such as marinas.

The maneuverability of these boats is typically improved by the use of dual rudders that are located close to each powered hull for efficient steering ( BoatUS ).

When docking under power, I find it helpful to carefully assess the wind and current conditions beforehand.

This is because catamarans can be more sensitive to windage due to their larger surface area above the waterline.

By understanding how these forces may affect the boat, I can make adjustments to my approach and successfully dock the catamaran without any incidents.

Safety and Comfort on Board

Safety Features

Safety is a top priority when sailing any type of vessel, including catamarans. A well-built catamaran offers several features aimed at ensuring the safety of those onboard.

First, catamarans have inherent stability due to their wide beam and twin hull design . This makes them less prone to capsizing than monohull boats. This stability allows me to confidently navigate various water conditions .

In addition to stability, catamarans are designed with positive buoyancy, making them almost unsinkable . Of course, safety equipment such as lifejackets, flares, and first aid kits should always be onboard and well-maintained.

Furthermore, you should also stay updated on weather conditions, avoid sailing in high-risk areas, and learn your boat's safe sail limits.

Living Spaces and Comfort

When it comes to living spaces, I value comfort and practicality as essential features for my time on the water. Catamarans offer a unique advantage in this regard, as their dual hulls create spacious living areas.

Most catamarans are designed with separate cabins in each hull, allowing for privacy and comfort when sleeping. Additionally, these boats typically feature shallow drafts , which means I can access shallow waters and anchor close to shore.

The main living area, or salon, is situated on the bridge deck between the hulls. It usually includes a seating area, a dining table, and a galley (kitchen). Large windows provide ample natural light and panoramic views, making the space feel open and bright. Some catamarans even have the option for an additional living area on the upper deck where you can enjoy the sun and breeze.

One aspect of catamaran living I truly appreciate is the ample storage available. Each cabin typically has built-in storage spaces for clothes, gear, and personal items. There are also designated areas for equipment such as spare sails, tools, and water toys. This makes it easy for me to keep my belongings organized and make the most of my time on the water.

Maintaining a Catamaran

Routine Maintenance

In order to keep my catamaran in the best possible shape, I make sure to perform routine maintenance tasks. These tasks are essential to extend the life of the components and ensure smooth sailing:

• Cleaning : Regularly cleaning the deck, hulls, and sails prevents buildup of dirt, algae, and other debris that could affect performance.
• Inspection : Periodically inspecting my catamaran allows me to detect any potential issues before they become significant problems. I pay close attention to the rigging, sails, and lines on my boat.
• Lubrication : Keeping all moving parts lubricated is vital to prevent friction and wear on components such as winches and pulleys.
• Antifouling : Applying antifouling paint to the hulls of my catamaran helps prevent the growth of marine organisms that can damage the boat and reduce its speed. Make sure to do this at least once a year.

Dealing with Wear and Tear

Despite my best efforts to keep my catamaran well-maintained, wear and tear is inevitable. Here's how I deal with common issues that could arise from regular use:

• Repairs : When I notice signs of wear on sails, lines, or rigging components, I make it a priority to repair or replace them promptly. Neglecting these issues can lead to more significant problems and affect the boat's performance.
• Hull maintenance : If I find dents, scratches, or stiff rudders on my catamaran's hulls, I address them immediately. Repairing any damage not only ensures smooth sailing but also prevents further issues from developing.
• Sail care : Over time, my sails can become stretched, torn, or damaged due to exposure to sun, wind, and saltwater. Regularly inspecting them for signs of wear and making any necessary repairs or replacements helps maintain optimal performance.
• Rust and corrosion prevention : Since my catamaran is made of various metal components, I need to protect them from rust and corrosion. I routinely check for signs of corrosion and apply anti-corrosive treatments when needed.

Catamaran Brands and Models

High-Performance Models

In recent years, there has been a growing interest in high-performance catamarans. I have seen a variety of brands and models that have impressed me with their performance capabilities. One notable brand is Fountaine Pajot , which has a long history of producing a range of sailing catamarans and power catamarans. Some of their popular models include the Tanna 47 and the Bali 4.4 .

Another high-performance catamaran I've come across is the Leopard 40 . Known for their speed and exceptional handling in various conditions, the Leopard brand started with sailing catamarans and has since expanded to include power catamarans. Their models range from 40 to 53 feet long, offering both power and luxury for those looking for a thrilling experience on the water.

Cruising Catamarans

When it comes to cruising catamarans, the Lagoon brand is synonymous with luxury and comfort. With a range of sailing catamarans from 40 to 70 feet long, Lagoon offers spacious catamarans for extended bluewater cruising. Their 60- and 70-foot power catamarans are equally impressive, providing ample living space and smooth sailing experiences.

I've also found the Aquila 42 PC to be a remarkable cruising catamaran. With a focus on design and innovation, Aquila has produced catamarans perfect for exploring the open sea with friends and family. Their spacious, stable designs allow for a more enjoyable and serene journey, ensuring you arrive at your destination comfortably.

The Catamaran Lifestyle

Anchoring and Cruising

I find catamarans to be a fantastic choice for cruising and anchoring , which is a critical part of living the catamaran lifestyle . Catamarans have several advantages when it comes to anchoring and cruising, such as:

• Stability : Due to their wide beam and twin hulls, catamarans remain stable during anchoring, which reduces the risk of seasickness.
• Shallow draft : Thanks to their shallow draft , catamarans can anchor close to shore, enabling better access to protected coves and more beautiful beaches.
• Speed : Despite their large size for cruising vessels , catamarans are generally faster than monohulls. This is a result of their slim hulls and reduced water resistance.

When it comes to anchoring, catamarans can make use of their shallow draft to anchor in locations that other boats cannot. This allows for a greater range of cruising spots, which makes the overall experience much more enjoyable and unique.

Living on a Catamaran Full-time

For many catamaran enthusiasts, the dream of living full-time on a catamaran is entirely possible. While not without challenges, there are several factors that make living aboard a catamaran an enjoyable experience:

• Spacious living areas : Catamarans generally have more living area compared to monohulls, providing ample space for the whole crew.
• Privacy : The separate hulls allow for private cabins, ensuring that everyone on board has their space.
• Stability : As mentioned earlier, catamarans are stable vessels, making living on them more comfortable than monohulls.

Choosing Your Catamaran

Comparing Models and Features

When I start to look for the perfect catamaran, the first thing I focus on is comparing various models and features .

I determine the key factors that are essential for my needs, such as size, passenger comfort, and performance. By doing so, I can identify which catamaran models are most suitable for me.

For example, if I plan to sail with a large group, I would look for a catamaran that offers ample space both inside and out.

To help me with my comparisons, I usually create a table or list of the different models and their features:

This visual aid makes it easier for me to sort the options and prioritize my considerations, such as price, yacht type, and brand.

New vs. Second-Hand

Another critical aspect of choosing a catamaran is deciding between a new or second-hand boat.

Both options have their pros and cons, and ultimately it depends on my preferences and budget.

If I can afford a new catamaran, I get the advantage of the latest design , features, and technology. Plus, I typically receive better warranty coverage and support from the manufacturer.

However, new catamarans are more expensive and can have long wait times due to high demand.

On the other hand, purchasing a second-hand catamaran can save me a significant amount of money, and I might find a high-quality boat with low mileage or well-maintained by the previous owner.

However, this option carries more risks, as I need to be knowledgeable about potential maintenance issues and conduct a thorough inspection before purchase.

Learning Resources

Books and Manuals

When it comes to learning about catamarans, there are plenty of books and manuals available.

One of the highly recommended books is Multihull Voyaging by Thomas Firth Jones. This book provides a comprehensive understanding of multihulls, including catamarans, and is an essential guide for any beginner sailor.

Another great book to check out is Catamarans: The Complete Guide for Cruising Sailors by Gregor Tarjan.

With a foreword by Charles K. Chiodi, publisher of Multihulls Magazine, this book covers all aspects of cruising catamarans. It includes detailed information on design, construction, and maintenance, as well as tips and tricks for sailing a catamaran.

Here are a few more books that I find valuable:

• The Catamaran Book by Tim Bartlett, an excellent resource for both beginners and experienced sailors
• Catamaran Sailing: From Start to Finish by Phil Berman and Lenny Rudow, a comprehensive guide to both catamaran racing and cruising

Online Content and Photography

In addition to books, you can find plenty of online content and photography about catamarans.

Websites like Sailaway Blog and Boating Guide offer tips, techniques, and how-to articles for sailing catamarans.

Many of these sites also include stunning photography, showcasing these beautiful vessels in action.

For those who prefer Kindle or e-books, many of these resources are available in digital format.

This makes it easier for you to access them anytime, anywhere, allowing you to keep learning and improving your catamaran sailing skills.

To further enhance your knowledge, you can also join online forums and communities dedicated to catamarans.

These platforms provide invaluable advice and first-hand experiences shared by fellow sailors, as well as recommendations for additional learning resources.

Frequently Asked Questions

What factors should be considered when choosing a catamaran for full-time living?

When choosing a catamaran for full-time living, consider its space and layout , as it will become your home.

Look for a design with a comfortable living area , ample storage, and sufficient berths for the number of people living aboard.

Also, consider fuel efficiency , ease of maintenance, and the catamaran's cruising range .

Lastly, the overall cost of ownership , including insurance and mooring fees, should be considered.

How do catamarans perform in rough sea conditions?

In general, catamarans are known for their stability, which is primarily due to their wide beams. This makes them less prone to capsizing when compared to monohulls.

However, their performance in rough sea conditions will depend on the specific model and design of the catamaran. Some may perform better in certain conditions than others, so researching and selecting the right design is essential.

What are the key differences between sailing a catamaran and a monohull?

One of the main differences between catamarans and monohulls is stability.

Catamarans have a wider beam , which makes them more stable and minimizes the risk of capsizing.

They also have shallower drafts, which allow them to access more shallow waters compared to monohulls.

Additionally, catamarans often have larger living spaces, making them more comfortable and suitable for cruising and full-time living.

What are the advantages of catamarans for long-distance cruising?

Catamarans offer several advantages for long-distance cruising.

Their wide, stable design provides a comfortable ride and reduces the risk of seasickness.

They can also attain higher speeds due to their reduced drag and generally sail faster than monohulls on certain points of sail.

The shallow draft allows them to explore more coastal areas and anchor closer to shore. Lastly, their spacious interiors make them ideal for extended cruises and living aboard.

How does one assess the value of a used catamaran on the market?

Assessing the value of a used catamaran requires thorough research and inspection.

Start by comparing the age, model, and condition of the catamaran to similar listings on the market.

Take note of any upgrades or additions made to the boat, as these can affect the price.

It's essential to inspect the boat in person or hire a professional surveyor to ensure there are no hidden issues that could affect its value.

What essential features should be looked for in a catamaran intended for ocean voyages?

For ocean voyages, look for a catamaran with a strong, well-built hull designed to handle rough conditions.

Safety features such as liferafts, adequate flotation, and sturdy deck hardware are crucial.

A reliable engine and well-maintained rigging and sails are also essential.

In terms of living space, opt for a catamaran with a comfortable, spacious interior and ample storage.

Last but not least, good navigation and communication systems are necessary for long-distance ocean voyages.

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A Complete Catamaran Guide

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

Disclaimer: You might notice that we recommend products in some articles. We may earn a commission for referring you if you click the link and buy a product.

We only recommend products we’ve tried/tested/own (that’s why you won’t find thousands of affiliate links on my site). If you have experience with one of the products we’ve mentioned, please share your experiences in the comments at the end.

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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What Is a Catamaran? Things You Need to Know

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Whether you’re a sailing enthusiast or have recently adopted an interest in yachts, you’ve probably heard of catamarans. It can be confusing as the term seems to describe boats, ships, and even massive-cruise vessels. So, what is a catamaran?

A catamaran is a boat with two hulls and a bridge between them. Catamarans can be designed as sailboats or motorboats. A catamaran stays stable since it has a wide base, it does not have a deep keel as on a monohull . Cats are known for not heeling, increased comfort, more space, and faster speeds.

In this article, we will explore everything you need to know about this design, including its origin and its advantages.

Table of Contents

Catamaran: A Basic Overview

The term catamaran comes from a 17th-century Tamil term kaṭṭumaram . The Tamil word stands for “tied wood,” but those vessels do not share the same working principle as catamarans. 

Even though most “tied wood” rafts in the 17th century India used two logs to keep the deck afloat, the logs acted more like pontoons than catamaran hulls. However, the commonality of two logs translated to catamarans, as these vessels generally have two hulls.

Since the term refers to the design, it is correct to refer to any vessel with two hulls connected by a bridge as a catamaran. However, technical accuracy doesn’t necessarily mean general-use correctness. While cruise ships can have catamaran design and small rafts may feature two hulls, the term is most often used for yacht-sized cruising sailboats.

Buyers who would not previously afford any vessel close to a mid-sized yacht can easily order a brand-new catamaran. Even investors interested in collecting income from catamaran renting opt for medium scale catamarans to hedge against depreciation and damage. Therefore, the term catamaran has become synonymous with medium-scale yachts with two hulls.

For the rest of this article, we’ll use the term to reflect these vessels, and if a catamaran-style cruise-ship or smaller boats are brought up, the distinction will be highlighted. It is also worth noting that even when dealing with manufacturers and industry literature, the word will refer to medium-sized yachts unless specifically differentiated.

What Are Catamarans Made Of?

One of the most interesting subjects in the overall catamaran conversation is the materials used to manufacture these vessels. That’s because different brands use different technology to compose the materials required for the hulls and other areas of a catamaran. 

Hulls of a Bali catamaran are built with sandwich infusion technology using polyester and closed-cell PVC. The brand’s catamarans are fitted with daggerboards, and material variety includes Kevlar in regions of impact and carbon fiber in the lower-weight areas.

Lagoon catamarans have a history of using solid glass below water level , but newer models have a balsa core in the submerged region . While the specifics of composting technology and materials may vary from brand to brand or even model to model within the same brand, the fact that most of these vessels are made of composite material remains consistent.

Parts of a Catamaran

One cannot ask what a catamaran is without getting curious about the various parts of such a vessel. Here is a breakdown of the various parts that go into this vell’s construction:

Unlike monohulls, a catamaran has two of these. They’re usually hollow and fitted out with beds and even a glass window to look out into the water since they’re not submerged. The hulls’ function is to push down on the water, so the water reacts by pushing the vessel up. Therefore, they play an essential role in the catamaran’s buoyancy.

Cross Beams

Because the hulls exert force on the water, there needs to be something that ensures the water’s reaction (upwards force) doesn’t break the deck. Crossbeams serve as connectors between the two hulls and hold them together such that water’s upward force is distributed evenly across the surface between the hulls. 

Depending on the size of the vessel, the number of cross beams may vary. Some of the critical characteristics of cross beams include high density and low surface area. 

A bridgedeck, as the name suggests, is a deck that serves as a bridge between the hulls. Manufacturers make a compromise between space and sailing efficiency when deciding how to design a bridgedeck for their catamarans. A bridgedeck is given significant clearance to allow for smooth sailing but not too much to leave behind, only the deck for living space. 

What you should keep in mind about a bridgedeck is that the smaller its clearance, the more water hits its bottom, causing discomfort for those sailing and dealing damage to the vessel. Also, you can’t minimize the bridgedeck without affecting the hull size, which means you have to compromise between the two.

Bridge deck slamming explained

Other Parts

While the aforementioned parts are key to a catamaran’s construction, they are by no means an exhaustive list of every vessel’s component. 

Catamarans have a topdeck, oftentimes a saloon, and separate chambers depending on the size. The standard vessel will have the interior fitting of a yacht of a similar size. Since none of these parts are specific to catamarans, a detailed breakdown of each isn’t necessary.

Catamaran parts explained

How Long Does a Catamaran Last?

Since catamarans aren’t impulse-buys, you must consider the longevity of the specific model you wish to buy. If you go with a boutique manufacturer without knowing about materials and construction, you may be sold a vessel that may last only seven years. 

On the other hand, brands that list their construction methods with transparency regarding materials used are more confident in their product, which has five times the longevity of a cheaply manufactured catamaran.

Suppose you wish to purchase a catamaran you want to have for 15+ years. In that case, you may avoid buying a “performance” catamaran that focuses on lightweight in favor of sailing speed and effortlessness on the waves. This conversation becomes more complicated when you consider sailing frequency and its impact on different vessels.

Generally speaking, expecting your catamaran to remain functional and smooth sailing for fifteen years is reasonable. That doesn’t mean any catamaran you purchase will fit this criterion but only suggests that you will find vessels with this longevity with relative ease.

Is It Easier to Sail a Catamaran?

It is essential to address different sizes of catamarans when this question arises. Sailing a catamaran sailboat is different from captaining a standard (yacht-sized) catamaran. Since yacht-sized catamarans can come with an autopilot, as can their monohull equivalents, the question becomes more about the sailing experience.

Your guests are more comfortable in a catamaran as the sailing experience doesn’t translate water resistance and wind to the vessel’s interior as much as it does in a monohull. Monohulls get hit by waves that pass between the two hulls of a catamaran.

As for physically sailing a catamaran-design vessel, the experience is different but not objectively easier. For instance, if you’re a seasoned monohull sailor, you’ll find what you’re used to much easier than adjusting two catamarans. 

Final Thoughts

Catamarans are self-balancing and easy to learn, making them a preferred sailing choice among novices and time-strapped sailing enthusiasts. They have recently become symbols of luxury with comfortable interiors and ample living space.

Owner of CatamaranFreedom.com. A minimalist that has lived in a caravan in Sweden, 35ft Monohull in the Bahamas, and right now in his self-built Van. He just started the next adventure, to circumnavigate the world on a Catamaran!

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catamaran noun

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What does the noun catamaran mean?

There are four meanings listed in OED's entry for the noun catamaran , one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

catamaran has developed meanings and uses in subjects including

Entry status

OED is undergoing a continuous programme of revision to modernize and improve definitions. This entry has not yet been fully revised.

How common is the noun catamaran ?

How is the noun catamaran pronounced?

British english, u.s. english, where does the noun catamaran come from.

Earliest known use

The earliest known use of the noun catamaran is in the late 1600s.

OED's earliest evidence for catamaran is from 1697, in the writing of William Dampier, buccaneer and explorer.

catamaran is a borrowing from Tamil.

Etymons: Tamil kaṭṭa-maram .

Nearby entries

• catalysis, n. 1655–
• catalysor, n. 1901–
• catalysotype, n. 1853–
• catalyst, n. 1902–
• catalytic, adj. & n. 1836–
• catalytical, adj. 1889–
• catalytically, adv. 1845–
• catalytic converter, n. 1955–
• catalytic cracker, n. 1951–
• catalytic cracking, n. 1927–
• catamaran, n. 1697–
• catamaran, v. 1820–
• catamenia, n. 1764–
• catamenial, adj. 1851–
• catamidiate, v. 1656
• catamite, n. ?1552–
• catamited, adj. 1697
• catamiting, adj. a1641–
• catamount, n. 1664–
• catamountain | cat o' mountain, n. ?a1475–
• catanadromous, adj. 1753

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Meaning & use

Pronunciation, compounds & derived words, entry history for catamaran, n..

catamaran, n. was first published in 1889; not yet revised.

catamaran, n. was last modified in July 2023.

Revision of the OED is a long-term project. Entries in oed.com which have not been revised may include:

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• new senses, phrases, and quotations which have been added in subsequent print and online updates.

Revisions and additions of this kind were last incorporated into catamaran, n. in July 2023.

Earlier versions of this entry were published in:

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Citation details

Factsheet for catamaran, n., browse entry.

• 1.1 Etymology
• 1.2 Pronunciation
• 1.3.1 Synonyms
• 1.3.2 Hypernyms
• 1.3.3 Hyponyms
• 1.3.4 Coordinate terms
• 1.3.5 Derived terms
• 1.3.6 Related terms
• 1.3.7 Descendants
• 1.3.8 Translations
• 2.1 Etymology
• 2.2 Pronunciation
• 2.4 Further reading
• 3.1 Etymology
• 4.1 Etymology
• 4.2.1 Declension

From Tamil கட்டுமரம் ( kaṭṭumaram ) , from கட்டு ( kaṭṭu , “ to tie ” ) +‎ மரம் ( maram , “ tree, wood ” ) .

Pronunciation

• ( UK ) IPA ( key ) : /ˌkæ.tə.məˈɹæn/ , /ˈkæ.tə.məˌɹæn/
• ( Canada , US ) IPA ( key ) : /ˈkæ.tə.məˌɹæn/ , /ˌkæ.tə.məˈɹæn/

catamaran ( plural catamarans )

• 1838 , [Letitia Elizabeth] Landon (indicated as editor), chapter XV, in Duty and Inclination:   [ … ] , volume II, London: Henry Colburn ,   [ … ] , →OCLC , page 218 : Swift over the seas the vessel drives; Madras appears in sight. The first object catching the eye, upon the anchor being cast, was an Indian upon his catamaran , who, making a sudden motion, sprung to the side of the ship, grappled there for a moment, and the next was on the deck.
• 1889 , William Makepeace Thackeray, Hobson's Choice : She meddles with my prescriptions for your wife; she doctors the infant in private: you'll never have a quiet house or a quiet wife as long as that old Catamaran is here.
• 1808–10 , William Hickey , Memoirs of a Georgian Rake , Folio Society 1995, p. 90: Three or four strange-looking things now came close to our boat, which I understood were called ‘ catamarans ’, consisting of nothing more than two or three large trees, the trunk part only strongly lashed together, upon which sat two men nearly in a state of nature [ … ] .
• ( obsolete ) An old kind of fireship .
• ( twin-hulled ship or boat ) : twinhull , cat
• ( twin-hulled ship or boat ) : multihull
• ( twin-hulled ship or boat ) : AC45 , AC72

Coordinate terms

• outrigger canoe

Derived terms

• cat ( diminutive )

Related terms

Descendants.

• → Portuguese: catamarã

Translations

From Tamil கட்டு ( kaṭṭu , “ to tie ” ) +‎ மரம் ( maram , “ tree, wood ” ) .

• IPA ( key ) : /ka.ta.ma.ʁɑ̃/

• Homophone : catamarans

catamaran   m ( plural catamarans )

• catamaran , a twinhulled ship or boat

Further reading

• “ catamaran ”, in Trésor de la langue française informatisé [ Digitized Treasury of the French Language ] , 2012 .

Borrowed from English catamaran , from Tamil .

• ( Jersey ) catamaran

Borrowed from French catamaran .

catamaran   n ( plural catamarane )

• English terms borrowed from Tamil
• English terms derived from Tamil
• English 4-syllable words
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• English lemmas
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• English countable nouns
• English terms with quotations
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• English terms with rare senses
• English terms with obsolete senses
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• French terms derived from Tamil
• French 4-syllable words
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Brunswick man who died in boating accident was hardworking, community-focused

Aug. 20—Sam Sharpe was an expert captain. He loved the water and had been on and around boats since he was born.

That's what makes the 23-year-old's death so unbelievable, "the true definition of an accident," said his mother, Susanna Sharpe, 51.

Sam Sharpe died Friday evening after going out on his boat near Potts Point Landing in South Harpswell. He pulled up to the dock to drop off his girlfriend, Liz Perkins, 24, of Lewiston, and went back out to attach the 19-foot center console boat to the mooring and bring the dinghy back to shore. While Perkins put their belongings back in the truck, Sharpe was somehow injured by the boat's propeller. He was pronounced dead after witnesses brought him to the shore.

"It can happen to anyone, (even) someone whose skills are so advanced," said his mother.

Sharpe's loved ones said he was a loyal, hardworking man who cared for his family.

He had various jobs on and off the water after graduating from Brunswick High School in 2019 and attending Maine Maritime Academy for a year. He worked as a sternman for lobsterman Scott Merryman in Harpswell. His father, Joe, an "accomplished captain" himself, taught him everything he knew about boating, Susanna Sharpe said.

When he wasn't on a boat, Sharpe enjoyed being outdoors and working with his hands. He worked at Southern Maine Landscaping and Butcher Boys Deer Cutting, and did carpentry work for Patrick McAllaster, of Brunswick, a general contractor.

Christy McAllaster, Patrick's wife, said Sharpe seemed quiet when he started there about three years ago, but soon showed that he was a smart, quick learner who grew close to them. She said Sharpe often came home excited to tell his mom about what he learned at work, like how to angle a roof and frame a wall. She said Sharpe became skilled, had an acute attention to detail and didn't need to wait around for instruction.

She said he helped landscape their home, take care of their dog and would joke around with them like he was a part of their family.

"I don't know that everybody would know how genuine, nice, helpful and caring Sam is once he gets to know you," McAllaster said.

His heart was bigger than him, she said. And he was 6 feet, 3 inches tall.

Perkins, his girlfriend, called Sharpe a "gentle giant." She met him for the first time on Christmas at Blue Goose Tavern in Lewiston in 2022.

She went out to the bar to meet up with some mutual friends, wearing pajamas and XTRATUF lobstering boots with a fish pattern, which she wears working at a lobster pound. Sharpe said "nice boots" a few times, but she didn't hear him until her friend pointed him out.

"He struck up a conversation and we chatted all night and we were inseparable ever since," she said through tears.

They had their first date at King's Head Pub in Portland a few days later and "just clicked." They rarely fought and never spent more than a couple days apart, Perkins said.

She was the love of his life and planned to marry her, said his mother.

EMBEDDED IN THE COMMUNITY

He was embedded in his community, as captain of his high school baseball, basketball and golf teams and recently as a men's league player at Mere Creek Golf Club. And he was willing to help anyone who needed it, his family said.

"Selfishly, I think it's such a waste that a productive member of society, a great kid (who was) doing what he was supposed to do, all the right things, his life was cut short," Susanna Sharpe said.

His aunt, Kate Vickery, 49, of Portland, said Sharpe was "the glue and the entertainment that held all of our lives together."

"He walked into a room and everybody noticed him," Susanna Sharpe said. "He'd often be found in the door to wherever he was trying to get, shaking hands, greeting people with a smile. I think his friends would call him the life of the party."

He had a close relationship with his grandparents, John and Connie Vickery, of Brunswick, and visited them every Friday after he cashed his paycheck. And he was proud of his 20-year-old sister, Abby, who attends Syracuse University. She would often call him on FaceTime to ask him if her outfits looked OK, his mother said.

"He really just lived life on his own terms and to his fullest," his aunt said.

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