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Building a future

Of sustainable innovative solar yachting.

Sunreef Yachts is the world’s leading designer and manufacturer of luxury sailing and power multihulls.

Each catamaran, motor yacht, and superyacht built is a bespoke creation. Every yacht is a vision brought to life, thoughtfully designed to deliver luxury, style and comfort.

EXPLORE OUR CATAMARANS

Sailing yachts, power yachts, superyachts, with a  360°  approach.

to eco cruising, they offer cutting-edge electric propulsion , naturally-sourced sustainable materials, smart energy management and new technologies including a patent-pending solar skin produced in-house.

Green Propulsion for Eco Catamarans

Renewable energy on yachts, energy efficiency on yachts, sustainable finishing materials.

Equipped with the world’s first and only composite-integrated solar panel system and using the industry’s lightest batteries, the Sunreef Yachts Eco catamarans provide the best of autonomy and energy efficiency for environmentally-conscious luxury cruising.

The Sunreef Yachts Eco harvest power from the sun more efficiently than most solar catamarans. First in the world In-house pattented designed and manufactured by the shipyard, Sunreef Yachts’ solar panels are fully-integrated with the composite bodywork, vastly increasing the amount of solar power generated.

OUR AMBASSADORS

Fernando alonso.

brand ambassador since: September 2021

Two-time Formula 1® World Champion Fernando Alonso commissioned a custom 60 Sunreef Power Eco catamaran with Sunreef Yachts.

brand ambassador since: June 2022

An unstoppable and passionate adventurer, Mike Horn has accomplished a series of groundbreaking expeditions including a legendary solo journey around the equator without motorized transport

LATEST NEWS

Sunreef Super Cat on the Rise: 100 Sunreef Power 2.0 Launched

Sunreef Yachts, the world’s leading luxury catamaran shipyard, proudly announces the 100 S

E1 Team Rafa & Sunreef Yachts Eco

A New Partnership begins Sunreef Yachts Eco joins Rafael Nadal’s E1 team as Official Partner. T

80 Sunreef Power Eco wins the International Yacht & Aviation Award

Sunreef Yachts Eco celebrated a spectacular victory at the International Yacht & Aviation Awa

IYC Appointed as Sunreef Yachts Exclusive Dealer in the UK

Sunreef Yachts is proud to announce a new partnership with IYC, appointing them as the Exclusive

Structural Foam from Recycled PET Bottles Integrated into the Yacht’s Structure

Sunreef Yachts Eco is a comprehensive approach to yachting, aiming to enhance energy efficiency a

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Sunreef Venture S.A.

Sunreef Yachts Shipyard

ul. Tarcice 6

80-718 Gdańsk, Poland

+48 58 769 77 77

• Featured Cats:
• Woodbridge 50′ Charter Cat
• Bloomfield 86′ MotorSailer Cat
• Shuttleworth 52 AeroRig

Pedigree Cats

Pedigree Cats specialize in building 100% custom , luxurious multihulls; power catamarans, sail catamarans and trimarans, with many amenities included as standard features.  Pedigree Cats is the custom builder in the United States, using a USA-skilled labor force with proven composite building materials.  We offer a variety of different catamaran models ranging from 60′ to 150′ and top designers for our customers to work with in designing their ultimate catamaran.    We have been building custom composite multihulls since 1975.

Catamarans are created by the clients, working with designers and concept artist to get exactly what YOU want!

Our custom yachts are constructed under ABYC standards with EC compliant components and hardware.  The catamaran hulls are constructed using Airex foam core, E-glass, Kevlar, carbon fiber, vinylester or epoxy resins. Pedigree Cats Catamarans are custom builders of your catamaran and, with factory direct sales, you can expect great savings.

Next to Launch:   Available for Completion!

Frequently asked questions.

If you don’t find the answer you’re looking for, contact us! 

[email protected] (360) 942-2810

CAT OR TRI?

Taken from The Design File, Tony Grainger Yacht Design. 

“CATS have become more popular for cruising mainly because of the accommodation space and privacy they provide and because for a given length they are faster and cheaper to build than a trimaran.  TRIS, on the other hand, provide good performance through a wider range of conditions than catamarans, and can also be effective for cruising by utilizing flare above the waterline in the main hull, and by fitting aft cabins where additional privacy is required in the accommodation layout. Apart from the accommodation, the trimaran provides a more forgiving motion in a sea way and better resistance to pitching if the hull shapes are well designed, and the wide beam allows it to carry more sail in fresh conditions. Against these advantages is the fact that a cat will require less berthing space and is likely to be more maneuverable in close quarters if twin diesels are fitted. Also, the cat will have a more steady motion than a tri while sailing downwind.”

I built my first multihull in the 70’s and it was a Trimaran, foam cored, TriStar design, a great multihull.  Now I am building a cat for my wife and I, mainly because of the room, very wide main salon and stateroom and big aft deck and flybridge.  The Tri was maybe a bit more sea kindly than the cat will be, but besides not having to build a third hull, she will be a bit faster as well as maybe a bit more economical.

Can I have what I want ?

But you must stay in the boundaries of the designer structural requirements i.e.. mast placement, weight to be carried and where. All the multihulls we have built over the last 42 years, have been what the clients have wanted, inside and out. Once they find the size they think will work, we find the basic design and designer for their dream platform to create it.

The final look is up to you, either with your drawing or pictures or work with one of several concept artists we know to help. Same with the interior, your interior designer, pictures or cut out from magazine of things you would like or we can line you up with someone to help. You work directly with these people, pay them directly to go as far as you want or need to, the do not work for Pedigree.

How long does it take to build your dream?

Based on our first price estimate, a basic 60′ power or sail typically takes about 24 months. This would be a very nice Cat, but not a lot of fancy, expensive items on board (gold faucets etc.) Engines, hydraulic steering, electric heads, windlass, gen.set, etc., very nice, but not a lot of goodies. The second price we show is with almost everything clients really want onboard, Watermaker, A/C, Shore boat, TV (s), fancy wood decor and custom items and electronics. This, of course, also adds more time to construct, maybe 6 months, You can also have us build to a certain stage and you take her home and finish the build or stretch out the time to build to fit your schedule or investments. If you add 6 months to each of these times, it would be for a 75′-85′ and 6 months to that and you would be in the 100′ range.

Taking her home from here or maybe cruise the San Juan islands, inside passage to Alaska first. Clients have also taken them to Vancouver and had them shipped to Florida or hire a crew to deliver them to where they want.

Why does Pedigree Catamarans, Inc. post our prices online?

We have been building multihulls since 1975 and we know how many hours each boat should take to build, even custom boats since we do not build production boats.  Other companies may not have built or built enough boats to determine the cost.  Granted boat costs vary directly with the customer’s requirements, however the hull build should not vary much.

Also, we do not have “salesmen.”   We are a owner/operated business that talks directly with each customer based on our 42 years of boating and cruising experience.  We believe that you want a cat of your own, not what a production builder thinks everyone should have.

I would be very leery of a company who wants large deposits up front and can’t provide basic prices to a customer.  What we are hearing now from people that have paid a large deposit up front, only find the builder wants more and more and exceeded their guess of the cost and time line.  Then the worst, they want more money or they will sell the cat to someone else, holding it for ransom from the highest bidder,  Our clients chose to pay as we build and the cat is 100% theirs from the start and definitely no large deposit up front. 

How much does a custom catamaran cost?

The cost of a custom Pedigree catamaran, constructed with foam core, composite construction is very close to that of a production built yacht.  The advantage is, you will have exactly what you want and the disadvantage is, it will take a little while to build.

Charter cats are generally a lot less expensive. They do not need the big ticket luxury items, such as water makers, A/C, big gen. sets, fancy interiors, etc.

When we have an opening to start a new project, you can have just the hulls built and finish the catamaran yourself at a considerable savings at your home port.  If you wish, we can provide you with a cat at what ever stage you like. For example, we can fit the engines and aide in completion and when you are ready to launch, we can arrange that as well.

Most of our catamarans are fully loaded and ready for cruising.  We have listed the average cost clients have spent on our amenities and pricing page. For a list of some of amenities included in a Pedigree Cat and the average prices, click on the “Amenities & Pricing” button available from most pages on our site.

Over the last 20 years, the clients have chosen to pay as we build and they have approved to have done as well as what we purchase for them, engines etc.. 

All and all, we can provide just about anything you and your budget can imagine. Our goal is to get you out there to enjoy the fun with  the exact Catamaran you have always wanted.

I think we are about the only builder that shows you the price you might spend on you dream, it’s up to you and what you want and need.

Why do Production Cats depreciate so much more than a quality custom built cat?

Several reasons. One might be, that every cat produced is probably from the same mold and in most cases, several years old and not updated or no improvements incorporated over any previously produced. Thus no real reason to get a new one if you can get the same one used for a lot less. The owners must lower their asking price far enough below the new ones that it will make it desirable. The price on the same new cat, next year, must be in line pricewise, in the marketing field to be sold, thus last years model must be substantially lower.

The production cats do not provide the clients with what they expected in a catamaran. Lacking in performance, require a lot of power to move them at a reasonably expected speed, to narrow to give the stability and the room onboard they were led to believe they would have. Deeper draft than expected, very heavy solid fiberglass construction, noisy, sinkable, sweat and hard to maintain a comfortable temperature inside. Most are imported and can not be used for charter in US waters.

One of our custom built multihulls came up for sale, built in 1980 and sold for $60,000 more than it cost the owners to have it built back then.

Even today, we have people trying to buy the clients cat we are constructing from the client and at a substantial amount more than they have into their dream. Problem is, this is their dream and it is not up for sale.

O.K. - I am interested in a Catamaran. What do I do next?

Step 1 – What type and length do I need?

Step 2 –  What is included and how much is it going to cost?

Step 3 – Contact Us

Read the details >>>

Let us build your custom dream yacht!

Gary habersetzer started building multihulls in 1975 in washington..

In the late 70’s, the first Airex foam core Trimaran in the USA, a TriStar 42′ “Amenity” was built by Gary.  The designer, Ed Horstman was as excited as he was to build a composite Multihull and ended up writing an instruction manual based on Airex information in conjunction with ABS standards.  At that time, there was no one in the USA that was building composite Multihulls.

Bloomfield 86’ Custom Catamaran

This is a great place to start if you ever wanted a custom catamaran…saving over 2 years of construction time.

Now, about the custom catamaran…..This cat is 86′ long and 42′ wide and with keels and can be beached or set on a spit at low tide to do clean up or repaint bottoms. She is a custom composite catamaran built with Airex foam core, tri- and bi-axial fabric and Vinylester resin, carbon fiber and epoxy resin, Kevlar where needed for beaching.

• European Union
• South Africa

The Leopard Identity

Leopard Catamarans pushes the boundaries of catamaran design.

Evolving from 50 years of customer feedback, Leopard Catamarans has pooled their expertise with builders Robertson and Caine to design today's Leopard range: spacious, robust, performance-driven blue water cruising catamarans. As the worldwide distributor, we’re proud to say that over 2,500 Leopard cats have now been delivered all over the globe. 

Pricing & Options

Latest news.

Sailing a New Leopard Home: Leopard 50 Atlantic Crossing

Sailing Catamarans

Motor Yachts Catamarans

Dufour Yachts

• Commitments

History & Expertise

Team management

Sailing towards carbon neutrality

A global signature, heading to carbon-neutral cruising, catamarans, motor yachts & sailboats.

Enjoy extraordinary experiences and share precious moments aboard your Fountaine Pajot sailing catamaran…

Motor Yachts

Choose the refinement of a motor yacht, with the luxury of space and comfort… A new horizon of experiences is opening up before you…

Dufour Sailboats

Step aboard legendary sailing yachts, synonymous with fast cruising and pleasure at the helm… A unique line bearing the Dufour signature…

More than half a century of passion and innovation

Inspired by a passion for sailing and a love of the oceans, Fountaine Pajot has been combining vision, expertise and innovation to design the very best boats for over half a century.

22 Jul 2024

Fountaine Pajot Motor Yachts team wishes you a radiant summer!

Interview with an Alégria 67 Owner & guided tour

Xavier Embroise

Alégria 67 Owner

2024 Monaco Yacht Show

22 May 2024

International Event | Open Days La Rochelle

24 Apr 2024

Thíra 80: voted “Best Production Sailing Catamaran” by Yacht Style

08 Mar 2024

Alégria 67 – The Flagship Catamaran Star at the International Multihull Show – La Grande-Motte

How does Smart Electric technology work? Answer on video…

Smart Electric: a complete overview of this technology, its origins, how it works and its everyday benefits… #Broadcast

Acquire a flagship catamaran, tailor-made solutions: charter management, customization…

How do you buy a flagship? What types of ownership are there? How do I get proper support? Find out all you need to know in this broadcast…

20 Feb 2024

A new way to experience Motor Yachts

What is the future of hydrogen in recreational boating?

Discover the challenges of implementing Hydrogen, thanks to our experts…

16 Feb 2024

The Thíra 80 nominated in the “Multiyacht” of the Year category by Multihulls World magazine

Isla 40 and Astrea 42, the perfect models for starting out in the world of catamarans?

Isla 40 and Astréa 42, find out all about these catamarans through two testimonials…

Stay connected for the latest Fountaine Pajot news

Follow the adventures of Fountaine Pajot Owners, discover the latest news and upcoming events, and take part in the development of the Boat of tomorrow!

How can we help you?

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• OUR MISSION
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THE ALL AMERICAN DIFFERENCE

Whether it’s a high speed catamaran passenger ferry, a monohull cruise boat, or a government research vessel, we know each of our operator’s needs are unique.

This is why we do not conform their objectives to fit existing designs. We work on every detail of the mission of each vessel prior to production, to ensure the most operator-friendly, fuel-efficient, and best performing vessel in its class. All American Marine is at the forefront of aluminum vessel design and manufacturing. Our team is committed to guiding you through each step of the process, and we deliver great value on a vessel that is truly unique to its specific application.

Government Contracts:

Duns #: 86-731-6010 cage#: 3fpe7.

Innovation is at our core whether it’s building North America’s first hydrogen fuel cell-powered commercial vessel or fuel-efficient & long-range survey vessels.  Our experience building the most technologically advanced vessels in the business serves our operators first and foremost.

There’s no “one-size-fits-all” solution on the water, and that’s why each of our vessels is truly unique to our operator’s mission. Our holistic design/build approach serves our operators in the short and long term in a vessels overall value.

Recognized for our craftsmanship and high quality, our  history of repeat customers knows that once a vessel is delivered, we stand by that vessel for years to come. You call? We answer. We stand by the quality of our vessel’s long-term performance and quality.

(360) 647-7602

Work and patrol.

Whether it’s for the LA Port Police or the Texas Game Wardens, AAM has built the toughest and most innovative vessels required for their class.

Research and Survey

From university research & survey to offshore wind support vessels, see how AAM is building the most advanced boats for all of our operators’ needs.

Pilot Boats

This unique catamaran design incorporates Teknicraft’s hydrofoil supported hull with industry leading maneuverability.

Hybrid Vessels

It’s happening on our roads and we know we won’t be able to rely on fossil fuels forever, that’s why AAM is on the leading edge of the decarbonization trend.

Passenger Ferries

From high-speed catamarans with hydrofoil technology to hybrid electric monohulls, we’re building the future of transportation.

Dinner Cruise Vessels

AAM is excited about this growing sector, and we look forward to customizing more vessels for this unique application.

STATE-OF-THE-ART Facility

Approximately 85 miles North of Seattle, All American Marine’s production facility is located along the Northern shore side of Bellingham Bay in Bellingham, Washington. In early 2017, AAM moved into the brand new, purpose-built 57,000 square foot boat construction facility located on Squalicum Harbor, allowing for multiple vessels of varying sizes to be in construction simultaneously with staggered production schedules.

TESTIMONIALS

We are very pleased with the team All American Marine has put together to deliver this unique vessel and are eager for our guests to experience San Francisco Bay from the silent decks of the Enhydra [this fall]. We see the propulsion configuration on the Enhydra as phase one in our move toward the full electrification of our fleet. Stay tuned for phase two.

“We chose All American Marine based on their experience and skillset in building such highly customized research vessels, vessels that are in service throughout North America. This new best-in-class vessel will provide an unmatched platform for our continued focus on performing to the most stringent offshore survey specifications in the world, whether that is for nautical charting or for subsea exploration to support offshore wind development.”

“All American Marine worked with us to refine our goals, build a second, proven vessel that met those goals, and then delivered. In fact, despite building two boats during the midst of a global pandemic, they delivered both boats on time and on budget. This new vessel, with its capacity, comfort, and speed is revolutionizing the fleet for Major Marine Tours. Our customers truly enjoy the spacious and accessible deck spaces when viewing whales and glaciers, particularly the stadium bow viewing area.”

The vessel is definitely a game-changer for the Texas Game Wardens. Our key mission is to make sure the Texas maritime border is safe. The fact of the matter is, there’s not an off the shelf vessel available that meets the daily needs of law enforcement, particularly for long-range vessels. Each step of the way All American listened to us, understood our mission, and in conjunction with Teknicraft, designed and built a vessel that has all the versatility we need to be successful on the water.

“All American builds the highest quality vessels and offers the best value overall value in the country. When we visited their state-of-the-art facility and saw the rapid progress and the quality of work on our first boat, we decided to go ahead and build two vessels.”

Working with the All American Marine team from start to finish went beyond expectations, and their commitment to detail and excellent project management throughout the process was the difference maker.

A successful partnership is one that accomplished the goals of all parties and concludes with superior results. King country citizens will be the beneficiaries of these quality vessels for years to come. Thank you to AAK, Teknicraft and King County.

KEEP IN TOUCH

To stay in the know about what AAM is up to, whether it’s current builds and new projects, upcoming launches, or industry news, don’t forget to follow our blog , check us out on Facebook and Instagram (@allamericanmarineinc), or shoot us a note and say hello!

PRESS RELEASE: All American Marine Inks Contract with the University of North Carolina Wilmington for an Innovative 73’ Research Vessel

Bellingham, WA, August 13th, 2024: All American Marine (AAM) is proud to announce the award of a contract to build an advanced 73-foot research vessel for the University of North Carolina Wilmington (UNCW). This state-of-the-art aluminum catamaran, designed by Teknicraft Design in Auckland, New Zealand, is set to enhance UNCW’s capabilities in marine science research and education along the Mid-Atlantic, US East Coast, and offshore waters. The 73’ x 26.7’ twin-engine, propeller-driven vessel will operate as a multipurpose research platform capable of conducting a wide range of scientific missions, including oceanographic surveys, biological studies, and educational outreach programs. Designed to More

PRESS RELEASE: All American Marine Signs Contract with Los Angeles Port Police to Construct a Next-Generation 65’ Patrol Vessel

All American Marine (AAM) is thrilled to announce a signed contract to construct a state-of-the-art 65-foot catamaran for the Los Angeles Port Police. Teknicraft Design in Auckland, New Zealand, designed this cutting-edge dive and patrol vessel, which represents a significant leap forward in maritime law enforcement capabilities for the LA Port Police. The new vessel, measuring 65’ x 24’, is an aluminum catamaran is specifically designed to enhance the operational efficiency and effectiveness of the LA Port Police and will add operational flexibility to their existing fleet. It will employ the latest hull design improvements from Teknicraft Design, providing improvements More

PRESS RELEASE: All American Marine Delivers Hydrofoil-Assisted Tour Vessel to Phillips Glaciers

All American Marine (AAM) is delighted to announce the successful delivery of the Chugach Express to Phillips Cruises and Tours, marking a significant milestone in our partnership. This high-speed and long-range eco-tour vessel will operate daily in Prince William Sound and will be based out of Whittier, Alaska.  Developed by Nic de Waal of Teknicraft Design in Auckland, New Zealand, the Chugach Express boasts an 84.5’ x 30.7’ semi-displacement aluminum catamaran hull, representing cutting-edge maritime engineering. Constructed to US Coast Guard (USCG) Subchapter T classification standards, the vessel features a fuel capacity of 1200 gallons, facilitating fuel-efficient operations. Its design More

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Handcrafted. Custom. Catamarans.

NEW MODEL - The perfect family boat is here. Doesn’t matter if you like pulling up to sandbar parties, cruising around a lake, or nosing up on an island, the Harpoon will provide everyone with a fun time on the water.

NEW MODEL - This shallow draft Bay Boat will get you everywhere you want to go. With an in-class leading amount of deck space, there is more than enough room to carry duck decoys, beach bags, and comfortably enjoy the water with your whole crew.

22SF Catamaran

A popular model throughout the Southeast, these smooth-riding catamarans are equally capable of taking the family for a joy ride or cutting through some chop in the ICW.

25SF Catamaran

Available with single or twin motors, the 25SF can make getting offshore a breeze. A spacious boat that is easy to maneuver and capable of going anywhere on the water.

29SF Catamaran

This catamaran can be customized for any boater. If you prefer a sunset cruise in the river, or you want to spend all day bringing in Wahoo, this cat can be customized for whatever you desire.

32SF Catamaran

Used by fishermen and fire departments in the Southeast, our 32’ catamaran gives you plenty of space for all your charter guests.

35SF Catamaran

Our largest boat gives you the size and range for any type of fishing, anywhere you want to go. Customize this with an upper station and a huge coffin box.

Aluminum Hulls

At twice the strength of fiberglass, our lifetime guaranteed aluminum hulls will provide you with a supremely maneuverable boat that can travel faster and with less draft, all while providing a safe boating experience.

Catamaran Design

Catamaran hulls provide a softer, more stable ride with exceptional efficiency all while providing optimal deck space due to wider beams. The lower center of gravity will give you a ride with the least impact.

2 Decades of Experience

A track record of over two decades of building custom aluminum boats ensures that you will be getting the boat you deserve. Boats built by artisans dedicated to delivering the perfect vessel for you.

Built by Artisans

The Cape Fear Cats team of artisans is invested in seeing your boat all the way through from design to delivery. Our in-house welders, fabricators, riggers, and painters are able to build your boat 100% on site.

We craft all of our 100% aluminum boats to your specific design. Our commercial strength hulls will provide you a top of the line boating and fishing experience.

Built for a lifetime

Aluminum boats built with every detail engineered, designed, and executed with dedication. ACI Boats builds welded aluminum catamarans and monohulls for recreational and commercial use. Our boats are built to last a lifetime.  

We are founded on generations of boat building experience. ACI Boats is owned and operated by Cory Armstrong, and backed by a team of skilled craftsmen and women. When choosing a boat builder, quality and trust is everything– ACI boats delivers with a safe, and comfortable vessel that you can rely on.

Pybus Point Lodge is proud to announce the official launching of two brand new, catamaran style, fishing and touring boats from ACI Boats. This is the second time we’ve had the pleasure of working with ACI and once again, they exceeded our expectations. Since we run a premium fishing and adventure lodge, we don’t just have to worry about our boats being safe and functional–we also have to make sure that our boats have the style and comfort that our guests expect.

ACI Boats is thrilled to announce the official award of a $3 million dollar contract with American Samoa’s Departmant of Commerce for four “Super Alia” commercial fishing vessels. All four boats will be manufactured at ACI Boats’ facility in Port Townsend, WA. The vessels themselves will be 38’x14’ semi-displacement catamarans, designed by ACI Boats and Coastwise Marine Design. The first of the four vessels, to be completed in Fall/Winter 2022, will be used as a training platform for boat owners, captains, and deckhands. The following three boats, will be completed over the course of 18 months and will then be available for lease by the American Samoa Dept. of Commerce, intended to support the growth and safety of the local fishing fleet.

ACI Boats launches it’s first CatLander in it’s line of CatLander landing crafts. Built for the Jamestown Sklallam tribe in Washington State, the CatLander7500 will be used as a spill response support vessel by the tribe.

ArrowCat Power Catamarans Unmatched Craftsmanship Meets Unyielding Spirit

Experience the thrill of the open water with unparalleled comfort and tailored craftsmanship. Whether you are cruising the coastlines or anchored in serene bays, your ArrowCat power catamaran is your gateway to a life of adventure and tranquility.

Introducing Our Newest Addition, The 20' Power Cat Center Console Model

We intentionally designed this model to be simple and plain – simple to take the boat out, simple to use and to maintain, plain by allowing you the flexibility to customize it according to your preferences.

ArrowCat 20cc

This 20-foot center console is built with strength and purpose, designed for ease and simplicity. Effortlessly take it out on the water, and enjoy straightforward maintenance and operation. Its clean, adaptable design allows for extensive customization, whether on your own or through a dealer.

Fully Planing Hull Design LOA: 19′ 4″ / 5.89 meters Beam: 8′ 4″ / 2.54 meters Draft: 10″ / 0.254 meters

Explore Our 32' and 42' Signature Cabin Models

Perfect for inshore and offshore cruising, long distance and overnight trips, cold off seasons and hot boating seasons, and much more. The ArrowCat 32-foot and 42-foot models provide an exciting and versatile experience on the water. Explore to see which one could best suit your boating lifestyle.

ArrowCat 320

Merging express cruiser elegance with catamaran stability, the ArrowCat 320 Coupe features a planing hull design for smooth, swift rides. Powered by twin outboard motors, it promises dynamic performance and exhilarating adventures on every voyage.

Standard Layout: 2 Cabins/ 1 Wet Head Optional Tower Option LOA: 31′ 2″ / 9.5 meters Beam: 10’ / 3.05 meters Draft: 20″ / 0.508 meters

ArrowCat 420 Coupe

The ArrowCat 420 Coupe combines the luxury of an express cruiser yacht with the stability of a catamaran hull. Designed with a planing hull for agile, efficient navigation and powered by twin outboard motors, it delivers unmatched performance for your ocean adventures.

Standard Layout: 2 Cabins/ 1 Full Head LOA: 41′ 9″ / 12.73 meters Beam: 14′ 9″ / 4.50 meters Draft: 18″ / 0.46 meters

ArrowCat 420 Flybridge

 This luxury express cruiser yacht boasts a catamaran hull for superior stability and a planing hull design that ensures efficient, agile handling. Powered by twin outboard motors, it offers robust performance. The addition of a flybridge enhances your view and enjoyment, making every journey unforgettable.

Standard Layout: 2 Cabins/ 1 Full Head LOA: 41′ 9″ / 12.73 meters Beam: 14′ 9″ / 4.50 meters Draft: 20″ / 0.51 meters

Our Unique Design

Enjoy your boat year-round and stay warm and dry during cooler weather or overnight trips, while also having a comfortable and private space to retreat for whenever you need a break. Here are a few reasons why an ArrowCat power cat is an excellent boat to consider.

Catamarans have two hulls, which provide more stability in the water. They are less likely to roll or pitch, which means they offer a more comfortable ride, especially in rough conditions and for people who are prone to seasickness.

Power catamarans are typically more fuel-efficient than monohull boats of the same size. It requires less energy and yields more performance per HP. The two hulls create little to no drag or resistance to get on plane, resulting in greater fuel economy. Allowing for longer journeys with fewer refueling stops. 

Power catamarans have a shallow draft which means they can navigate diverse cruising grounds – beaches, islands, rivers, channels, and coastal areas with limited water depth. 

Express Cruiser

Cabin boats are designed with comfortable sleeping quarters and living spaces. They feature a sleeping space with a bed, a galley with a stove, sink, and refrigerator, and a head with a shower and toilet.

Cabin boats provide protection from the elements, such as wind, sun, and rain. This allows for comfortable cruising in a variety of weather conditions, as well as providing a haven during storms

Express cruisers are designed for efficient and fast navigation, offering higher speeds compared to traditional cruising boats. They usually have powerful engines that enable them to cover long distances quickly, making them ideal for day trips or weekend getaways.

Powered By Outboard Motors

Outboard motors can provide excellent performance and speed. They can often reach higher speeds than inboard motors of the same horsepower.

Outboard motors have a simple and standard design and are relatively easy to install, they do not require additional components such as a transmission, propeller shaft, couplings, and struts, that inboard engines do. They are easily assessable and cost less to maintain than inboard motors because they are mounted outside at the rear of the boat.

Outboard motors are often designed with features that make them easy to maneuver. For example, they can be tilted or rotated to provide precise control and handling in tight spaces and shallower waters.

About ArrowCat

Crafting Versatility and Adventure on the Water Since 2008

At ArrowCat, we believe in creating boats that are ready for anything. Our American-owned company builds versatile, multi-functional catamarans designed not just for a specific activity, but for a lifestyle that demands freedom and reliability. Whether you’re cruising, fishing, or exploring, our boats deliver superior performance in all conditions.

Trusted by seasoned mariners across coastal and saltwater environments, ArrowCat power catamarans embody the spirit of adventure and the promise of quality.

Learn More About Us

Experience A Smooth, Fast, And Stable Ride

Discover the unparalleled stability and speed of an ArrowCat power catamaran. Connect with our experts to schedule your sea trial today and experience the thrill firsthand.

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There was a time when my whole being turned into a trance as soon as the leaves were moving in the trees, as I was thinking about the potential windsurf session that I was missing.

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Since entering the industry in 1986, our driving force has centered around offering a quality and hassle-free ownership. We pride ourselves in having multiple repeat clients, which can only be achieved when dedication to customer service and lasting relationships are at the forefront of our company.

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The Powercat Company was founded in 2009, when company CEO Richard Ford forged a relationship with the renown production boat yard, Horizon Yachts in Kaohsiung, Taiwan. Over the past decade, the range has grown to include the PC52, PC60, PC68 and a fully custom PC74. Richard and his team work closely with Horizon Yachts to design and produce these magnificently appointed PowerCats. Horizon operates at the cutting edge of technology and is considered one of the premier boat builders in the world.

The management and build team at Horizon are second to none. Their attention to detail and customer service has been an uncommon luxury.  I was in direct contact with the build team and project managers throughout. The Horizon team is talented, gracious, hardworking and diligent.  The continuous stream of performance throughout the build was astonishing to witness and be a part of.  Friendships and loyalty run deep at Horizon. 

If you want to be part of the future of midsize luxury yachting, contact Richard. You”ll be amazed!

The Powercat Company has continually kept the owners connected with annual rendezvous and we all feel a special bond and enjoy sharing our adventures. As owners we excitedly bring others aboard to witness the glorious fit & finish and just stepping aboard allows you to make that dream a reality.

Although we had previously owned a Horizon Powercat we had never built a boat from scratch. The US and Taiwan Horizon teams were very patient, professional and talented. They guided us through the build process and the myriad of details and decisions that needed to be made. The result is a one of a kind, high quality, beautiful yacht of our dreams.

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Skater Powerboats

Racing Pedigree

Founded in 1974

Flexible Design and Power

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World Leaders in Design

Welcome to skater powerboats.

Those who crave tear-duct draining, cheek-smearing velocity on the water know there is only only one king: Skater! When it comes to performance, the automobile world has Ferrari and Lamborghini, while motorcyclists long to ride a Ducati or BMW.

The Number One builder of high-performance catamarans in the world has been in business for 50 years.

Skater is the standard by which all other high-performance boat manufacturers are compared. The sleekest in design, the fastest, and the most sought-after Skater is the Bugatti of the water.

Founded and led by Peter Hledin in 1974, Skater prides itself on being at the leading edge of technology. The Skater, Michigan-based company that covers 95,000 square feet was the first to perfect the use of vacuum-bagging technology, S-glass, kevlar, carbon fiber, epoxy resins and other construction techniques in the high performance industry and we use those construction techniques on every boat we build.

Skater does not build ‘off-the-line’ boats. From the interior to the paint to the power package and everything in between, every catamaran is fully customizable to meet each client’s needs. From subtle to spectacular in design but always stunning in performance, Skater excels above the rest.

Handling Like No Other

Every Skater has world-renown on-rails handling and incredible responsiveness

The Standard Bearer in the Offshore World

Even though others have tried to replicate the Skater hull countless times, we’re still the industry leader in all-around performance and speed

No Duplicates

Like human DNA, no two Skaters are the same.  Each one is built to the precise standards and expectations of our clients

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Join the BRIX legacy with a recreational cat built to professional standards. Be it for fishing or cruising, each custom RecPro is distinctly tailored for adventure.

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BRIX Marine’s PaxCats deliver reliability and comfort for the most memorable excursions. Choose the sweetest ride on the water for up to 49 passengers and beyond.

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BRIX provides the most capable boats under 50′ in the marine science industry. Outfit with equipment such as a knuckle boom crane, an A-frame, or the versatile BRIX HYPR-Arm.

OUR LATEST LAUNCHES

BRIX Marine Launches the 5217-CTC “Quinn Starr”: A New Era in Whale Watching Adventures

About Alaska Whale Watching Alaska Whale Watching offers unforgettable wildlife viewing experiences from Auke Bay, [...]

BRIX Marine Launches the 4615-HTC LandingCat: Setting Sail to Alaska

PORT ANGELES, WA – BRIX Marine announces the successful launch of the 4615-HTC, which has [...]

BRIX Marine and Ashbreez Boatworks Launch “Just 1 More”: A Continued Partnership of Marine Excellence

Anchorage, Alaska – BRIX Marine and Ashbreez Boatworks proudly announce the continuation of their successful [...]

BRIX Marine Delivers the 3513-CTC “Sovereign One” to the Puyallup Tribe: Advancing Shellfish Monitoring Capabilities

PORT ANGELES, WA – BRIX Marine proudly announces the successful completion and delivery of the [...]

Behind the Scenes of the BRIX 4615-HTC: Advancing Maritime Operations with Purposeful Design

PORT ANGELES, WA – BRIX Marine is excited to announce the forthcoming launch of the [...]

BRIX Marine Introduces the 3011-CTC Survey Boat “Lugudi Barana”

Port Angeles, WA – BRIX Marine, a pioneer name in the maritime industry, proudly announces [...]

Move Beyond Ordinary: BRIX Marine Launches the 3814-CTC ‘Hammer Cat’ with Starboard Walkaround for Unrivaled Offshore Adventures

Port Angeles, WA – BRIX Marine, a pioneer in maritime innovation, is thrilled to introduce [...]

BRIX Marine Delivers Kamohoali’i: 4014-CTC for Haleiwa Shark Tours

PORT ANGELES, WA – BRIX Marine proudly presents Kamohoali’i, a state-of-the-art 40′ x 14′ Classic [...]

ABOUT BRIX MARINE

has earned a solid reputation for pioneering and crafting the world’s most rugged aluminum catamarans and workboats since 1991.

The company was founded in Canada and moved to Port Angeles, WA in 2001. We gained new ownership under Bryton Marine Group in 2017, which fortified the company’s focus on our Core Values and strategic plan for our future.

“Our team has developed strong momentum with our boat portfolios and customers. As we look to the future, BRIX Marine will honor the legacy we have built and move beyond to deliver exceptional custom boats,” said Perry Knudson, Managing Director.

BRIX literally means the scientific measure of sweetness in liquid. This translates well to the high-performance boats the company is known for. “BRIX is more than a sweet riding hull,” said Knudson. “Our custom projects begin with the first communication and the relationship continues after the boat is delivered. BRIX is committed to an owner-centric approach.”

BRIX Marine has another important target. “We want to be the best place to work in our community,” said Knudson. BRIX employs master level craftsmen in the disciplines required to build welded aluminum boats. The company invests in defining career paths and training employees to gain the skills needed to advance in their fields.

The BRIX team will broaden and diversify its portfolio of welded aluminum boats, known as being “first in cats.” The newly redefined custom recreational portfolio is in high demand, and BRIX Marine is bringing this same innovative approach to other key markets.

“Our luxury water taxi designs are raising the standards for passenger vessels as seen with the recent launch for Liberty National Golf Club. The research vessel  Bob & Betty Beyster  we delivered in 2019 earned a Workboat Magazine award as a Significant Boat of the Year. That design is reshaping our research vessel line-up,” commented Perry Knudson. “We have a lot of exciting things on the horizon. This new identity represents who we are and where we’re going.”

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We believe solutions exist to unique vessel demands, and we provide solutions to our clients every day, giving them the best possible opportunity to succeed on the water.

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CRUISING CATAMARANS FOR REAL SAILORS

Seawind Catamarans have long been Australia’s most popular cruising catamaran designs. With over 35 years experience in building the highest quality blue water catamarans. As already discovered by our growing family of adventurous and like minded Seawind fans the world over, a Seawind boat could be the ideal sailing catamaran for you and your family!

STATE OF THE ART COMPOSITES

What's in a seawind .

Seawind Catamarans is in continuous development with every new boat model, building on the knowledge and success of previous designs. Every catamaran yacht is the result of hundreds of collective years of multihull experience, and the best construction techniques the world has to offer. Seawind Catamarans uses Resin Infusion Technology to produce a lighter, stronger, and cleaner product. In partnership with High Modulus and DIAB technologies, the complex infusion implementation process was developed using a 3D simulated flow model (pictured here) to ensure that best quality and consistency is achieved with every new Seawind sailboat.

PROVEN RELIABILITY FIRST & FOREMOST

Every Seawind sailing catamaran is built for cruising practicality, but delivered on a platform of fast, performance hulls with a fine bow entry and strong stiff construction. Poise is combined with power in the shape of a relatively powerful sail area, providing a power to weight ratio to set pulses racing.  This additional power delivers the speed to bring significantly more destinations within reach, satisfying a modern market which may need to fit “extended” cruising into only a few weeks or months. But in all of the 600 catamaran boats launched, not one has ever suffered a rig failure or have we ever experienced a capsize.  Seawind catamaran yachts are built on a track record of success.

ERGONOMIC & PRACTICAL

Seawind Catamarans’ sustained success over so many years is built on key features which are part of our DNA. Huge cockpit doors open to combine the saloon and cockpit – a feature unmatched in the market, and which provide expansive and versatile living space.  The new Seawind 1260 enhances this feature further by adding a modular cockpit arrangement. Move chairs and seats to arrange the space as you need it, as circumstances demand.  Seat 8 people inside, and another 8 outside.  Or bring everyone in and make that a dozen inside or easily clear the cockpit for a long passage.  Every Seawind catamaran sailboat provides flexibility and luxury while sacrificing none of the practicality that made previous Seawind Cats models the success they are. Seawind boats also provide unparalleled entertainment space while sacrificing nothing in offshore safety.

PROTECTED SAFE STEERING

Dual helm stations are found on every Seawind Catamarans sailboat, and they offer 360-degree visibility, even on the largest Seawind 1600 model.  This allows the skipper to sail safely in crowded harbor conditions, and to keep an eye on the crew when offshore. Large targa tops offer protection from the harsh offshore conditions, both sun and rain, while panoramic opening windows provide ventilation as well as visibility.  Seawind Catamarans boats offer the protection of a pilothouse yacht, with the visibility and helming advantages of a sailing catamaran.

INDOOR/ OUTDOOR LIVING

The famous Australian indoor / outdoor, open lifestyle is entrenched in Seawind Catamarans designs, with an unbeatable living area complimented by brilliant natural ventilation, protected cockpit lounge, and social helm seats putting the skipper in control as well as in the conversation. Best of all, you can enjoy what many catamaran sailboats compromise on… visibility – for the skipper and crew, with 360 degree views from the helm and saloon seats all within the protection of the fiberglass coachouse and targa top.

Seawind 1370 Hull 1 Test Report by Skipper & Thailand Customer Service Manager, Phil Harper.

Seawind Catamarans to open Production Facility and European Service Center in Izmir, Turkey.

Beachability: Mini-keels or fixed rudders

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Semi-custom Catamarans

About falcon boats, with decades of experience in composite design, tooling, manufacturing, and naval architecture, the falcon team in 2019 decided it was time to build and brand our own line of unique power semi-custom catamarans..

VACUUM INFUSION BENEFITS: Controlling costs during the build process without compromising the integrity, utilizing state-of-the-art composites, infusing the build of each hull, deck, and components throughout the entire build.  A significantly stronger assembly versus heavy hand lamination.

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Excitement, Performance, & Comfort comes standard.

From years of experience in repairing, running, and building other brands of boats, the Falcon team knew they could develop a superior product.  We have developed layouts, features, and improved manufacturing technology that result in a build quality that sets Falcon Boats apart. People who really use their boats will appreciate the difference!

Get started with Falcon!

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Catamaran Construction – Hulls, Laminates, and Composites

• Post author By BJ Porter
• Post date October 15, 2020
• 4 Comments on Catamaran Construction – Hulls, Laminates, and Composites

It’s a given that catamarans are more sensitive to weight and loading than monohulls. Catamaran builders strive to build the lightest boats they can without sacrificing strength and stiffness, and have adapted new building techniques and materials to meet this target. Cutting weight allows more passengers and gear without sacrificing performance.

And the marketing materials reflect it–they load every review and website with polysyllabic technical jargon describing the design and production choices each builder made to deliver the best boat they can.

But when you’re reading a brochure and you come across phrases like “ hand laid bidirectional GRP ” or “ vacuumed bagged e-glass with vinylester resin over a Divinycell core ” do you know what that really means?

All modern production catamarans are made with “FRP” construction (for Fiber Reinforced Polymer). Composites aren’t new–it’s just using materials together to strengthen the whole assembly. Straw was added to bricks centuries ago, and steel reinforced concrete is a staple of construction over the last century. For boats, it’s the use of stranded fibers and cured resins which make FRP different.

The term “FRP” doesn’t get into the technical detail of which fibers and which plastics, and how they’re put together to build your hull. There’s a wide variety of fiber types which can be stranded, woven, chopped or sprayed in a varied of patterns then combined with several types of resins to make hulls with different characteristics.

Some FRP techniques produce lighter, stronger shapes, while others are quicker to build and less expensive to produce. The choice of technique is a function of many factors, from the number of hulls and parts to be built, the type of parts, the budget for the project, and many design specific requirements for weight and strength.

1. FRP Basics

The principle behind all FRP construction is the same – you lay our fibers in the shape you need, then saturate them with resin, removing all the air and voids you can. Resin is left to cure, then the piece is ready to finish and use.

The reality is more complex, since building a boat isn’t like making a flat board or a simple door. You’ve got a complex shape with a designed set of curves to build. “Tooling” is the set of shapes to make the boat parts; molds to cover with fiberglass to get the right shapes.

That’s what makes FRP so effective – you can make almost anything out of it. But to do so requires a lot of choices about what you need for the project at hand.

There isn’t a “best” all around material or technique choice for all jobs, and sometimes a lower cost technique or easier to work with material may be the better solution to the problem.

A. Fiber types

Fiber choices in the last few decades have expanded past the glass fibers used in the first mass produced boats in the 1960s. FRP construction wasn’t new even then, they built the first composite boats using modern fiberglass in the 1940s.

The major fibers used in marine construction fall into three categories – glass, aramids, and carbon. The primary differences are in the strength to weight ratios of the fibers, durability, elasticity, and cost. Some construction may use blends of fiber types to combine performance characteristics.

Glass – the most common material still, because of its low cost and versatility. The most common variety used in GRP (Glass Reinforced Polymer) is “E-glass” which refers to its strand size and mineral content. Other grades have different and sometimes better mechanical properties, but may be more expensive and less appropriate for boat building use. Fiber sizes run 10 to 25 microns for E-glass, though other grades may be smaller.

Brands like Leopard, Lagoon, and most higher production volume builders use E-glass.

Aramids – this includes brand names like Kevlar, Technora and Twaron. They have higher tensile strength than E-glass, and resistant abrasion and punctures. Kevlar is a common choice for bullet proof body armor, and can built a tough, lightweight hull. The materials can be difficult to work with, as it is very tough to cut the cloth. It is often blended with carbon fiber or other materials – Catana is known for using Twaron blends in hull construction.

Carbon – the ultimate in lightweight, strong construction material. Carbon fiber is the most expensive fiber, and is available in a variety of weights, grades and strengths. Fibers are smaller than glass – down to 5 Micron.

The lightest, most expensive hulls are made from carbon, but a catamaran builder may use carbon in places other than the hull to add strength and stiffness. Carbon boards, rudders, and reinforcing structures can enhance performance without driving the price of the boat beyond reach. Carbon is the fiber of choice for many custom builds, racing cats, and Gunboat.

B. Mats, Strands, Roving, Direction, and Weights

Fibers are woven into matting and cloth for construction. Depending on the application, different weights of cloth and cloth patterns and weaves may be more appropriate for the job.

Cloth weight refers to the weight per square yard (or meter) of the cloth. A square yard of nine ounce cloth weighs nine ounces. The heavier the cloth, the stronger it is in a laminate.

Fibers carry loads along their length, so cloth weaves have directionality to their strength. Most builders use several layers of cloth with different orientations to give good universal strength to hulls. Specific FRP applications with strict load-path requirements may have more unidirectional fiber layering – for example, a chainplate manufactured from carbon fiber may use unidirectional fiber.

Cloth – fiberglass cloth is commonly used on outer layers of composites. Cloth may have unidirectional or bidirectional strength. Bidirectional cloths have maximum load strengths in two perpendicular directions. Variations on weaves like a modified twill allow a more flexible cloth for better shaping around complex molds.

Mat – is omnidirectional strands of fiber compressed into a cloth. This is often held together with a resin soluble glue, which makes mat great at conforming to mold shapes without folding and bunching as it collapses when wetted. Because the strands do not align, fiber strength is the same in all directions.

Woven Roving – a heavier cloth made from larger bundles of strands. Woven roving allows for quicker buildup of material and strand weight.

Most FRP layups include multiple layers of different cloth and mat. Finished layers may be finer cloth over courser cloth, over woven roving and mat.

Three primary resins are in common use in marine construction – polyester , vinylester , and epoxy . All resins have materials safety concerns and require care in their use and handling.

Polyester is the least expensive and requires breathing protection because of the VOC emission (Volatile Organic Compounds…nasty, smelly fumes). It doesn’t have good bonding/gluing capability, and should only be used with glass fibers for structural building. Some polyester resins are referred to as “isophthalic” resins.

Vinylester is chemically similar to a hybrid of polyester and epoxy, and performs best with fiberglass. It shouldn’t be used in high strength applications with carbon or aramid fibers. It has some adhesive qualities which polyester lacks, it shrinks less during curing, and has better impact resistance.

The added strength of vinylester coupled with increased water resistance makes it an attractive option for many catamaran builders. It costs less than epoxy, but still has better performance than polyester.

Epoxy is the most expensive, but is three times the strength of the others. It offers the best adhesion and the only resin for building structural elements with carbon and aramid. It resists water intrusion better than the other resins, resists blisters, emits no VOCs, and shrinks less. The major drawback is it is more brittle if it takes an impact.

While epoxy is “the best” in terms of strength and ease of building, there are many applications where other resins are appropriate. Budget is a big driver – a boat made from E-Glass doesn’t need epoxy resin, and considerable cost savings to meet a construction price target may drive the choice.

They can build quality boats from all material combinations, but price and performance will drive materials choices to keep some boats more affordable.

2. Cored Construction

What’s the best way to make fiberglass strong? To a point, you can make it thicker. As it gets thicker, it gets heavier. A hollow shape can take more compressive load than a solid one of the same weight, and the same principle applies to fiberglass construction.

Consider an I-Beam used in building construction. It has the same strength (or more) as a solid rectangular beam of similar mass. The compressive load on the beam is supported by the outside edges of the material, the metal in the middle doesn’t contribute much to the strength. So we can remove metal to get the “I” shape while still keeping those sides rigid, making a lighter girder with less material.

The same principle applies to cored construction with fiberglass. Making a sandwich of two layers of fiberglass with a light core between them allows for the greater strength with weight savings.

There are drawbacks – the biggest risk is damage which breaks the skin, which can let water into the core. Earlier cored construction used materials prone to saturation and rot if they got wet. Some builders opt to do cored construction above the waterline and solid below to minimize some of these risks.

But the advantages in weight savings and increased stiffness offset the drawbacks, and there may be a few other side effects like sound and temperature insulation. Like resins and fibers, core materials offer distinct advantages, disadvantages and price points.

Most builders have adopted a hybrid approach, building solid hulls below the waterline, and cored hulls and decks above. This gives a balance of weight and safety.

A. Balsa Core

Balsa is light and inexpensive. The first cored construction used balsa, but it has the disadvantage of being wood. As a natural material, if it gets wet it can rot and break down. Builders use “end grain” balsa – shorter cross cut sections – to prevent wicking of water if there is an intrusion.

B. Foam Core

Closed cell foam cores give good strength to weight savings while minimizing water intrusion. If you get water in the core, it won’t spread very far. Divinycell is a popular PVC foam core, though there are several choices with different densities and compressive strengths.

Some foam cores are not suitable for heat treatment, but infused or vacuum bagged boats like the Outremer and PDQ do well with it.

C. Honeycomb

Honeycomb cores are often the most expensive, but also give some of the best strength to weight ratios. Honeycombed cells made from resin cured aramid papers are some of the best, but also among the most costly. They offer good stiffness, but can be hard to shape. Aluminum and other resin-infused papers are other core materials builders can choose from.

3. Construction and Resin

When building a hull, there are optimal ratios of fiber to resin saturation for target strength and weight. Too little resin and you may not have enough strength (or worse, voids and gaps), and too much, and you’re just adding weight without adding strength. Resins are also a significant material cost in building the boat, so over application not only increases weight but adds cost.

There are many ways to assemble the cores, fibers and resins to build a finished laminate hull – we’re addressing the most common in boat building. Each approach has strengths and limitations, and an impact on the bottom-line cost to build the boat. Any voids or air pockets in the laminate can be disastrous; these techniques have been developed to increase saturation and reduce the risk of voids.

A. Hand Layup / Open Molding

As the name implies, this is the application of resin by hand to cloth as it’s laid into a mold. Wetting is done with a brush, and the laminate is rolled out to remove any air pockets and voids. This is the simplest way to lay up fiberglass, but also the least precise and consistent and will use the most resin.

Skilled craftsmen have built some of the finest vessels in the world this way. Though it’s more popular with monohulls, which are less sensitive to weight, many catamarans built with hand layups on open molds are still out cruising and performing well.

B. Spraying

Using chopped-strand fiber mixed with resin, a “chopper gun” can spray the mixture into a mold to lay down the composite. A consistent thickness can be difficult, but this is a low cost construction technique which makes a very resin-rich laminate. Using sprayed fibers gives lower strength in all directions compared to meticulously laid down mat and bi-directional cloth. But it is a quick technique popular with mass produced, smaller boats.

It is an excellent technique for parts with complex geometry where weight is not an issue, but you will not see it often in catamaran construction. It’s heavy with resin without any resultant increase in strength.

C. Vacuum Bagging (Wet layup)

When an open molded component has been laid up and wetted with resin, vacuum bagging takes the process a step further. After the wetting is complete, air tight plastic bagging is secured around the wetted area, and the air is pumped out of the bag. The vacuum pulls excess resin out and collapses air pockets.

The goal is to get thorough wetting and produce as strong a laminate as possible without excess resin. Knysa and Leopard are two builders that use vacuum bagging on their hulls to reduce weight.

D. Resin Infusion

For resin infusion the cloth, matting and core is laid in place dry, then sealed in an air-tight bag. A vacuum pump attaches to one side of the bag, and on the other a feed for resin. The vacuum sucks the air out of the dry cloth stack, then pulls the resin through the stack, infusing and wetting it.

Resin infusion, when done right, gives the lightest, strongest laminates with no voids and the minimum resin weight for maximum strength. SCRIMP is a variant of the resin infusion process used by some builders, including TPI which build many early Lagoon cats.

E. Pre-preg

Using pre-preg (for “Pre Impregnated”) cloth for your laminating gets rid of the resin bucket. They manufacture cloth with a partially catalyzed resin pressed into it, then it’s chilled or frozen to stop the curing process. There is no need for seperately mixed resins, and there’s no worry your resin might “go off” and harden before you’re done wetting the cloth. Instead, the cloth is assembled, vacuumed, then heated to kick off the curing process.

There are both advantages and disadvantages to using pre-preg for your laminate work. The big disadvantage is the cost; it is most expensive material to use. You also need to chill and store the cloth until you need it, though some can be at room temperature for a couple of weeks without kicking off. And you need an oven which requires some clever tricks if you’re building a forty or fifty foot boat.

But the strength to weight ratio will always be perfect. High tech honeycomb cores are best suited to pre-preg lamination, and without racing against resin cure times, you can ensure perfect cloth placement and precise layout in the build process.

The primary use for pre-preg in boating is high performance race boats. With catamarans, pre-preg may be used high load parts, like Gunboat does for foils and rudders.

4. Industry Examples

Across the catamaran building industry you’ll find almost all the above techniques and materials used, though some are less common. You aren’t likely to find chopped strand sprayed layups in ocean going cats, and hand layups can lead to heavier hulls than weight sensitive catamaran designers prefer. Most manufacturers have moved to vacuum bagging or resin infusion, with a few of the highest end boats using pre-preg for key components.

Built by Robertson & Caine in South Africa, the hull material is vacuum bagged, end-grain balsa-cored E-glass with polyester.

Hand laid, bagged vinylester over an Airex foam core in the hulls.

Earlier Prout catamarans like the Snowgoose 34 featured hand laid solid FRP hulls and decks. Over time they switched to foam or balsa cores for decks and above the waterline.

Older PDQ boats were made from vacuum bagged vinylester – solid below the waterline and cored with CoreCell foam above the waterline and in decks. Newer PDQ models switched to epoxy resin.

All glass is vacuum bagged. Below the waterline is solid E-glass and vinylester. The rest is unidirectional, bidirectional, and triaxial cloths over a Nida-Core polypropylene honeycomb core with isophthalic and vinylester resins.

The Gemini cats are built with a solid hand layup of woven roving and fiberglass mat and polyester resin. Decks are cored with end grain balsa. The Gemini 3200 introduced vinylester resin into the layup to prevent blistering.

Older Lagoons were SCRIMP infused vinylester with and end grain balsa core above the waterline and in the decks.

Newer Lagoon catamarans use polyester and vinylester resins, also infused with balsa cores above the waterline and solid below.

With a carbon fiber inner skin, Catana also uses Twaron aramid fibers in the sandwiched hull over a foam core.

Fontaine Pajot

Primary hull construction is resin-infused vinylester with a balsa cored hull and deck.

Beneath the waterline, Outremer uses a single layer, solid vinylester laminate for safety. The hulls and deck are vinylester with a Divinycell foam core. They stiffen certain components with carbon for rigidity and durability.

Gunboat hulls are epoxy infused carbon fiber with a Nomex honeycomb core. They build dagger boards and other high load components with pre-preg carbon.

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By BJ Porter

Owner of Hallberg Rassy 53; world explorer.

4 replies on “Catamaran Construction – Hulls, Laminates, and Composites”

Excelent. Thank you for this I learned allot. Johan

Very straight forward information. Thankyou for doing this.

Damn…What an Amazingly Informative Article. *Cheers*

Outremer publish on their website that they use polyester. Not vinyl ester as you have stated.

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Ukraine war latest: Safety 'deteriorating' at Zaporizhzhia nuclear power plant after drone strike

Zaporizhzhia is the largest nuclear facility in Europe and has been occupied by Russian soldiers since the early stages of its war with Ukraine.

Sunday 18 August 2024 00:45, UK

• Drone strike on Ukrainian nuclear power plant sees safety deteriorate
• Zelenskyy says Ukraine inflicting 'maximum damage' on Russian forces in Kursk
• Kyiv refutes 'insane Russian propaganda' campaign warning of Ukrainian dirty bomb
• Kyiv used Western rockets to destroy Russian bridge, says Moscow
• Putin's forces capture territory in Donetsk - amid Ukrainian strikes on region
• 'We could lose': Russian state TV commentators gloomy over Kursk
• Sean Bell: Humiliated Putin will respond ruthlessly to Ukrainian masterstroke
• Michael Clarke : Pokrovsk in real trouble as Russian troops advance
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Ukrainian President Volodymyr Zelenskyy has praised the UK's "true leadership" in its support of Ukraine - but warned "the situation has slowed down recently" as it pushes into Russian territory.

In his nightly video address, he stressed it is "crucial that our partners remove barriers that hinder us from weakening Russian positions in the way this war demands".

He promised to "intensify our diplomatic efforts" amid the Kursk incursion, naming the UK,  US, and France as key targets.

It comes amid speculation Germany is planning to halve its Ukrainian aid budget next year.

Mr Zelenskyy finished his X post by saying: "Throughout this war, we've seen the UK demonstrate true leadership—in arms, politics, and support for Ukrainian society. 

"This has saved thousands of lives, reflecting the strength of the UK."

But he added: "Unfortunately, the situation has slowed down recently. 

"We will discuss how to fix this because long-range capabilities are vital for us. The whole world sees how effective Ukrainians are—how our entire nation defends its independence."

In a Sunday Express interview, Defence Secretary John Healey endorsed Ukraine using British weapons inside Russia - as long as it keeps within international law.

The UK "should be proud" British weapons are being used by Ukraine – including inside Russia, the defence secretary has said.

John Healey told the Sunday Express that he is happy for weapons to be used over the Russian border, providing international law is maintained.

He told the newspaper: "Let me be very clear: under Article 51 of the UN Charter, Ukraine has a clear right of self-defence against Russia's illegal attacks.

"Providing international law is followed, that does not rule out operations inside Russia."

He added: "We should be proud of Britain's support for Ukraine's struggle.

"We should be proud that British-donated equipment, in the hands of brave Ukrainians on the front line, is helping them to defend their country and push back Putin."

Ukrainian troops crossed into the Russian border region of Kursk on 6 August in a bid to divert the Kremlin's military focus away from the frontline in Ukraine.

On Thursday, Ukrainian forces claimed to have seized the town of Sudzha, six miles from the border.

The UK is one of Ukraine's leading military donors, providing lethal and non-lethal weaponry, including tanks, air defence systems, and long-range precision strike missiles.

Safety at Ukraine's occupied Zaporizhzhia Nuclear Power Plant is deteriorating after a drone strike on the road surrounding it, the International Atomic Energy Agency (IAEA) said on Saturday.

Earlier today, the IAEA Support and Assistance Mission to Zaporizhzhia (ISAMZ) team was informed that an explosive carried by a drone detonated just outside the plant's protected area.

A visit by the team found no casualties and no damage to nuclear equipment - but the surrounding road and gates were impacted.

The impact site was close to the essential cooling water sprinkler ponds and about 100m from the Dniprovska power line, the only remaining 750-kilovolt line providing a power supply to the plant, the team said.

IAEA Director General Grossi commented: "Yet again we see an escalation of the nuclear safety and security dangers facing the Zaporizhzhia Nuclear Power Plant.

"I remain extremely concerned and reiterate my call for maximum restraint from all sides and for strict observance of the five concrete principles established for the protection of the plant."

The ISAMZ team has reported heightened military activity in the area over the past week.

Germany plans to halve its military aid to Ukraine in 2025, according to a parliamentary source.

Chancellor Olaf Scholz is instead planning to use money generated from frozen Russian assets in Germany to support Ukraine's war against Russia, the source told AFP on Saturday.

It is not planning "any additional aid" to the $4.4bn (£3.4bn) already set aside in next year’s budget, the source added.

But Germany's foreign ministry denied the claims on X on Saturday.

"Rumours that Germany stops its support to #Ukraine are wrong," a post read.

"We stand with Ukraine & will support Ukraine as long as it takes.

"Since the beginning of Russia's war of aggression, Germany has supported Ukraine with €34 billion. 

"This year, we will provide military aid north of €7 billion."

Germany is Ukraine's second biggest military donor, providing £6.8bn in aid this year.

The leader of Russia's Chechnya region has appeared in a video threatening to send a Telsa into Ukraine – while praising Elon Musk.

Ramzan Kadyrov, who is known for extravagant publicity stunts, posted the video of himself on Telegram.

It shows him driving a Tesla Cybertruck, seemingly with a machine gun strapped to the roof.

He says he will send the vehicle into the Ukrainian conflict zone, before praising the company's chief executive Elon Musk.

Mr Kadyrov describes Musk as the "strongest genius of modern times", inviting him to Chechnya.

"We... await your future products that will help us finish the special military operation," referring to the Kremlin’s term for the Ukraine war.

Two Italian journalists who angered Moscow with a TV report from Ukrainian-controlled parts of Kursk will return to Italy for their own safety, according to Italian state broadcaster RAI.

Russia's foreign ministry summoned Italy's ambassador yesterday over what it called an "illegal border crossing" by the RAI crew.

The interior ministry was planning to open criminal cases against the two journalists, posted Baza, a Telegram channel close to Russian law enforcement.

"The company decided to make journalist Stefania Battistini and cameraman Simone Traini return temporarily to Italy, solely to ensure personal safety and security," RAI said. 

"Journalism is not a crime. The Moscow authorities' possibility of putting Stefania Battistini and Simone Traini on trial is unacceptable. Reporting is not done with prior authorisations," RAI union Usigrai and Italy's national press union FNSI said in a joint statement. 

A four-person RAI crew, working under Ukrainian military escort, produced the first foreign media report from the war-damaged Russian town of Sudzha last week.

Italy's foreign ministry said its ambassador Cecilia Piccioni had explained to the Russian authorities that RAI and its news teams acted independently and autonomously. 

The two reporters are scheduled to fly back to the northern Italian city of Milan tomorrow.

Security and defence correspondent Deborah Haynes was at the site of a missile strike in Sumy city this morning.

Residents described being awoken by a huge explosion.

One said the blinds across her window saved her from glass shattering as a result of the blast.

Watch more below...

Washington appears to be effectively blocking the UK from permitting Kyiv to fire Storm Shadow missiles inside Russia, The Times reports.

The UK has been waiting for US approval for over a month, a government source said.

The British government wants Ukraine to use the weapons as they wish, but consensus is required between the US, France and another unnamed NATO country.

A government source stressed to The Times that the UK was not blaming the US for any delay.

Britain was the first country to publicly supply Kyiv with long-range cruise missiles.

While it has permitted the use of British tanks and other weapons on Russian soil, restrictions remain on the missiles.

A British source previously said Ukrainian troops are thought to have used British Challenger 2 tanks inside Kursk.

Ukraine's success in Kursk has shown the West it does not need to take an incremental approach to Russia, says Ukrainian MP Oleksiy Goncharenko.

Kyiv's allies need to approve the use of Western weapons to strike deep inside its territory, he said.

He added the incremental style of Western support has only drawn out the war.

"Watch the Russian reaction. For more than one week, for the first time since the Second World War, Russian territory is occupied. And what is the reaction? Just some mumbling from Putin," said Mr Goncharenko.

"I hope that this will help us to convince our allies that Ukraine is capable of big successes and to win this war, so finally our hands will be untied," he said, adding Ukraine needs permission to use the UK's Storm Shadow missiles deep into Russian territory.

"I think this incremental style is very, very bad."

He continued: "Russia only understands one language, the language of force, and Ukraine has shown it now."

Kyiv has dismissed "insane Russian propaganda" alleging that Ukraine plans to carry out nuclear attacks.

Moscow has accused Ukraine - without providing any evidence - of gearing up to attack Kursk nuclear power plant and developing a "dirty bomb"; an explosive used to scatter radioactive waste.

The Russian defence ministry said Ukraine would blame Moscow and that it would respond harshly in the event of such an attack.

The allegations were "dangerous lies" and Ukraine officially denies them, said Ukrainian foreign office spokesperson Heorhii Tykhyi.

"We are witnessing another surge of insane Russian propaganda."

He continued: "Ukraine has neither the intention nor the ability to carry out any such actions. Russia must stop spreading dangerous lies.

"Ukraine has always been and remains a loyal member of the NPT (Non-proliferation treaty).

"We do not have any 'dirty bombs' and do not plan to acquire them."

Vladimir Putin made similar allegations shortly before launching the invasion of Ukraine in February 2022. Then, in March the same year, Moscow alleged Ukraine was going to use a dirty bomb. Neither claims were borne out.

Russia also alleged a Ukrainian drone dropped an explosive charge on a road outside the Zaporizhzhia nuclear power plant in Ukraine this morning.

Its Russian management posted an image to Telegram showing several men in IAEA jackets surrounding a dent in the road the width and depth of a pothole.

Both Russia and Ukraine have accused eachother of close calls with drones and rockets at the power plant since Russia occupied it.

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Local News | Chesapeake Bay ferry system would boost…

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Local News | Chesapeake Bay ferry system would boost economic growth but operate at a loss in first year

The report , unveiled Thursday at the Maryland Association of Counties conference in Ocean City, includes potential routes, ridership estimates, vessel requirements and financial analysis.

The study, conducted by Cambridge Systematics, a transportation consulting firm, looks at how a passenger ferry system could affect economic growth and tourism, increase access to the bay and provide new water connectivity across the region. A five-county consortium was part of the study, including Visit Annapolis & Anne Arundel County and governments from Calvert, St. Mary’s, Somerset and Queen Anne’s counties.

“We are optimistic about the study results and the path forward, which could better connect our Chesapeake Bay destinations and create economic impact across the entire state,” Kristin Pironis, executive director of Visit Annapolis & Anne Arundel County, said in a news release.

A map of the proposed ferry system’s locations and routes along the bay was released in February , identifying 21 potential host communities. Potential routes have changed slightly since then, however, and only 14 of the host sites are included. None of the six newly released routes have been finalized.

The longest proposed route could begin in Baltimore and head south to Annapolis before crossing the bay to make stops in Matapeake, St. Michaels, Kent Narrows and Rock Hall before returning in the afternoon. Another would start in Annapolis and head north to Baltimore, then cross the bay to Rock Hall, Kent Narrows and St. Michaels. A third could begin in Annapolis and head south, stopping in Chesapeake Beach and Solomons Island in Calvert County before heading to Crisfield on the lower Eastern Shore.

Expansion to seven additional communities would come later.

The ferries would operate Thursday through Monday from mid-April to mid-October.

The system is assumed to include seven vessels: two 149-passenger ferries and five 49-passenger ferries that could venture into shallower waters. Because the ferries would cruise at roughly 25 knots, or 28 mph, a catamaran design would offer more stability, the study says. Each ferry would have indoor and outdoor seating and restrooms.

These types of vessels range from $750,000 for a used, refurbished one to $11 million for a new one, according to the study.

Each of the proposed ferry terminals would require pier infrastructure, a covered building, restrooms and access to transit.

Once built, the system could handle 50,000 riders per season, the study says, with adult fares being $10 per hour on the water.

The report puts the price of other ferries and boat tours across the country at around $20 per hour on the water. A recent ridership survey found respondents would be more inclined to ride the Chesapeake Bay ferry with lower fares.

While the proposed ferry system is estimated to generate $2.5 million in revenue, it’s also likely to cost $5 million to operate during its first year, the study says, meaning it will have a negative pre-tax income of $2.5 million. That shortfall does not include roughly $4.8 million in improvements needed at the 14 proposed sites.

Without support from the host communities, the system would operate at a loss, the study says.

Financial performance of the ferry system would improve with higher ridership costlier tickets, the study says. Grant funding could reduce vessel capital costs, and public or private contributions could reduce terminal improvement costs.

However, if ridership during the ferry system’s first year reaches estimated levels, 143 jobs would be generated along with $6.7 million in labor income and $2.6 million in tax revenue.

A public/private partnership is suggested as the best governance structure to move forward with the project, the study says.

Next steps will include talking to community leaders, confirming site readiness, developing a funding plan and establishing a schedule.

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