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[2023] Hydrofoil Catamaran: The Ultimate Guide to Foiling on Water

• November 1, 2023
• Hydrofoil Basics

Experience the thrill of flying above the water with a hydrofoil catamaran!

Are you ready to take your hydrofoil boarding to the next level? Look no further than the hydrofoil catamaran. In this comprehensive guide, we’ll dive deep into the world of hydrofoil catamarans, exploring their history, how they work, their benefits and drawbacks, and everything else you need to know to make an informed decision. So, buckle up and get ready to soar above the waves!

Table of Contents

Quick answer, quick tips and facts, how does a hydrofoil catamaran work, benefits of hydrofoil catamarans, drawbacks of hydrofoil catamarans, choosing the right hydrofoil catamaran, maintenance and care, recommended links, reference links.

A hydrofoil catamaran is a type of watercraft that combines the stability of a catamaran with the lift and speed of hydrofoils. It uses specially designed foils to lift the hulls out of the water, reducing drag and allowing for faster and smoother sailing. Hydrofoil catamarans are popular among sailors and water sports enthusiasts for their incredible speed, maneuverability, and thrilling foiling experience.

Shopping Links: Hydrofoil Catamarans on Amazon | Hydrofoil Catamarans on Walmart | Hydrofoil Catamarans on Etsy

• Hydrofoil catamarans can reach speeds of up to 40 knots (46 mph) or more, depending on the design and conditions.
• The foils on a hydrofoil catamaran can lift the hulls out of the water, reducing drag and allowing for a smoother and faster ride.
• Hydrofoil catamarans are used for various purposes, including racing, recreational sailing, and even transportation.
• Foiling on a hydrofoil catamaran requires some skill and practice, but it’s an exhilarating experience once you get the hang of it.
• Hydrofoil catamarans come in different sizes and designs, catering to different skill levels and preferences.

Hydrofoil catamarans have a fascinating history that dates back to the early 20th century. The concept of using hydrofoils to lift boats out of the water and reduce drag was first explored by Italian engineer Enrico Forlanini in the late 1800s. However, it wasn’t until the 1950s that hydrofoil technology started to gain traction in the boating world.

The first hydrofoil catamaran, known as the “Aquavion,” was developed by the French engineer René Guilbaud in the 1950s. This innovative design combined the stability of a catamaran with the lift of hydrofoils, revolutionizing the world of sailing. Since then, hydrofoil catamarans have evolved and become more advanced, offering incredible speed, maneuverability, and stability on the water.

A hydrofoil catamaran works by utilizing hydrofoils, which are wing-like structures mounted underneath the hulls of the boat. These foils generate lift as the boat gains speed, lifting the hulls out of the water and reducing drag. This lift allows the hydrofoil catamaran to achieve higher speeds and a smoother ride compared to traditional boats.

The hydrofoils on a catamaran are typically designed with a curved shape, similar to an airplane wing. This shape creates a pressure difference between the upper and lower surfaces of the foil, generating lift. The foils are usually adjustable, allowing the sailor to fine-tune the performance of the catamaran based on the sailing conditions.

To control the hydrofoil catamaran, sailors use a combination of steering and sail trim. By adjusting the angle of the foils and the sails, they can optimize the lift and balance of the boat, ensuring a stable and efficient ride. It takes some practice to master the art of foiling on a hydrofoil catamaran, but the rewards are well worth the effort.

Hydrofoil catamarans offer a range of benefits that make them a popular choice among sailors and water sports enthusiasts. Here are some of the key advantages of hydrofoil catamarans:

Speed : Hydrofoil catamarans are known for their incredible speed. By lifting the hulls out of the water, hydrofoils reduce drag and allow the boat to glide smoothly above the waves. This enables hydrofoil catamarans to reach impressive speeds, making them a thrilling choice for racing and high-performance sailing.

Maneuverability : The lift generated by hydrofoils enhances the maneuverability of catamarans. With reduced drag, hydrofoil catamarans can make sharp turns and quick maneuvers with ease. This agility is particularly useful in racing scenarios, where every second counts.

Stability : The dual-hull design of catamarans provides inherent stability, even at high speeds. When combined with hydrofoils, the stability of hydrofoil catamarans is further enhanced. This stability makes them suitable for sailors of all skill levels, from beginners to experienced professionals.

Efficiency : Hydrofoil catamarans are more efficient than traditional boats. By reducing drag, hydrofoils allow the boat to sail faster while using less power. This increased efficiency translates to longer sailing distances and reduced fuel consumption, making hydrofoil catamarans an environmentally friendly choice.

Versatility : Hydrofoil catamarans are versatile watercraft that can be used for various purposes. Whether you’re looking for a high-performance racing catamaran or a recreational sailboat for family outings, there’s a hydrofoil catamaran to suit your needs. Some models even offer the option to switch between foiling and non-foiling modes, providing flexibility on the water.

While hydrofoil catamarans offer numerous benefits, it’s important to consider their drawbacks as well. Here are a few potential downsides to keep in mind:

Cost : Hydrofoil catamarans tend to be more expensive than traditional boats. The advanced technology and materials used in their construction contribute to the higher price tag. Additionally, maintenance and repairs can also be costly, especially if specialized parts or services are required.

Learning Curve : Foiling on a hydrofoil catamaran requires some skill and practice. It can take time to learn how to control the boat effectively and maintain stability while flying above the water. Beginners may find the learning curve steep, but with dedication and proper instruction, anyone can master the art of hydrofoil catamaran sailing.

Weather Conditions : Hydrofoil catamarans are sensitive to weather conditions. While they excel in flat water and moderate winds, rough seas and strong gusts can pose challenges. It’s important to be aware of the weather forecast and choose suitable sailing conditions to ensure a safe and enjoyable experience.

Transportation and Storage : Hydrofoil catamarans can be larger and bulkier than traditional boats, making transportation and storage more challenging. Specialized trailers or racks may be required to transport the catamaran, and adequate storage space is needed to protect it when not in use.

Despite these drawbacks, the thrill and excitement of foiling on a hydrofoil catamaran outweigh the challenges for many sailing enthusiasts.

When it comes to choosing the right hydrofoil catamaran, there are several factors to consider. Here are some key points to keep in mind:

Skill Level : Consider your skill level and experience as a sailor. Some hydrofoil catamarans are designed for advanced sailors, while others are more beginner-friendly. Choose a catamaran that matches your skill level to ensure a safe and enjoyable sailing experience.

Intended Use : Determine how you plan to use the hydrofoil catamaran. Are you looking for a racing catamaran, a recreational sailboat, or something in between? Different models offer varying features and performance characteristics, so it’s essential to choose a catamaran that aligns with your intended use.

Budget : Set a budget for your hydrofoil catamaran purchase. Prices can vary significantly depending on the brand, model, and features. Consider both the upfront cost and the long-term maintenance expenses when determining your budget.

Brand and Reputation : Research different brands and their reputation in the hydrofoil catamaran industry. Look for brands with a track record of producing high-quality, reliable catamarans. Reading customer reviews and seeking recommendations from experienced sailors can also provide valuable insights.

Demo and Test Sails : Whenever possible, try out different hydrofoil catamarans before making a final decision. Many manufacturers and dealers offer demo and test sails, allowing you to experience the performance and handling of the catamaran firsthand. This hands-on experience can help you make an informed choice.

Remember, choosing the right hydrofoil catamaran is a personal decision that depends on your individual preferences and needs. Take your time, do your research, and consult with experts to find the perfect catamaran for your hydrofoil adventures.

Proper maintenance and care are essential to keep your hydrofoil catamaran in top shape and ensure its longevity. Here are some maintenance tips to help you keep your catamaran performing at its best:

Rinse with Fresh Water : After each sailing session, rinse your hydrofoil catamaran with fresh water to remove salt and debris. Pay special attention to the foils, as saltwater can cause corrosion over time.

Inspect for Damage : Regularly inspect your catamaran for any signs of damage or wear. Check the foils, hulls, rigging, and sails for any cracks, dents, or loose fittings. Address any issues promptly to prevent further damage.

Store Properly : When not in use, store your hydrofoil catamaran in a dry and secure location. If possible, keep it covered to protect it from the elements. Consider using a boat cover or storing it in a boat shed or garage.

Follow Manufacturer’s Guidelines : Follow the manufacturer’s guidelines for maintenance and care. Each catamaran may have specific recommendations for cleaning, lubrication, and other maintenance tasks. Adhering to these guidelines will help prolong the life of your catamaran.

Seek Professional Assistance : If you’re unsure about any maintenance tasks or need assistance, don’t hesitate to seek professional help. Local boatyards, sailing clubs, or authorized dealers can provide expert advice and services to keep your catamaran in optimal condition.

By following these maintenance tips and caring for your hydrofoil catamaran, you can enjoy many years of thrilling foiling adventures on the water.

How fast is the hydrofoil catamaran?

Hydrofoil catamarans can reach impressive speeds, depending on various factors such as the design, wind conditions, and skill of the sailor. Some high-performance hydrofoil catamarans can exceed 40 knots (46 mph) or more. However, the exact speed will vary based on these factors.

How does a foil catamaran work?

A foil catamaran, also known as a hydrofoil catamaran, works by utilizing hydrofoils to lift the hulls out of the water. These foils generate lift as the boat gains speed, reducing drag and allowing for faster and smoother sailing. The lift created by the foils enables the catamaran to “fly” above the water, resulting in increased speed and improved performance.

What happened to hydrofoils?

Hydrofoils have a rich history and have been used in various applications, including passenger ferries, military vessels, and recreational boats. While hydrofoils experienced a surge in popularity in the mid-20th century, their use declined in some sectors due to factors such as high costs, maintenance challenges, and the development of alternative technologies. However, hydrofoils continue to be used in niche markets, including high-performance sailing and racing.

Read more about “… What is the World’s Largest Hydrofoil Boat?”

Are hydrofoil boats more efficient?

Yes, hydrofoil boats are generally more efficient than traditional boats. By lifting the hulls out of the water, hydrofoils reduce drag and allow the boat to sail faster while using less power. This increased efficiency translates to longer sailing distances and reduced fuel consumption. However, it’s important to note that the efficiency gains may vary depending on factors such as the design, sailing conditions, and skill of the sailor.

Hydrofoil catamarans offer an exhilarating and thrilling experience on the water. With their incredible speed, maneuverability, and stability, they have become a favorite among sailors and water sports enthusiasts. While they may come with a higher price tag and require some skill to master, the rewards of foiling on a hydrofoil catamaran are well worth it.

When choosing a hydrofoil catamaran, consider factors such as your skill level, intended use, budget, and the reputation of the brand. Take the time to research and test different models to find the perfect catamaran for your needs.

So, are you ready to take flight on a hydrofoil catamaran? Embrace the thrill, experience the freedom, and enjoy the incredible sensation of soaring above the water. Happy foiling!

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Leaders in their respective fields, the team's expertise ranges from technology and electronics to fashion, luxury goods, outdoor and sports equipment, and even food and beverages. Their years of dedication and acute understanding of their sectors have given them an uncanny ability to discern the most subtle nuances of product design, functionality, and overall quality.

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Professional BoatBuilder Magazine

The efficiency of a foiling powercat.

By Dieter Loibner , Mar 13, 2020

Matanzas Watercraft’s founder, Jan Brandt, in his office with a rendering on the wall and the prototype of the Matanzas 29 foiling powercat peeking through the shop door.

Motivated by his own boating experience and America’s Cup foiling technology, a startup builder launches the Matanzas 29, a new breed of powercat for fishing and cruising.

Wherever Jan Brandt goes, a constant companion since his childhood days in Hamburg, Germany, is his passion for watersports. Competitive swimming, surfing, waterskiing, fishing, scuba diving, sailing, you name it, he’s done it—and still does. No surprise, then, that Brandt is also deeply involved with boats, not just using them but also designing and building them. His latest project is a 29 ‘ (8.8m) foil-assisted planing cruising power catamaran designed for twin outboards from 60 hp to 90 hp. Last fall, construction was far advanced as Brandt prepped for finishing, outfitting, and getting the boat ready for sea trials off St. Augustine, Florida, where he set up shop as Matanzas Watercraft LLC.

Inspired by the Sliver 29, a catamaran designed for fishing and weekending, built by SuperCat in South Africa , Brandt defined specifications that suited his own use patterns and his home port in St. Augustine. “I am looking to build a day-use cat for fishing offshore waters but also capable enough to make the run to Bimini and Abacos on a calm summer morning,” his design brief reads. Also on the list: sufficient load capacity for three to four people for day use and provisions for a couple to cruise for a few days; a range of 200 nm on one tank; and a cruising speed of 20 to 25 knots. Brandt: “I need to deal with a 2–3 ‘ [0.6m–0.9m] chop and Atlantic Ocean swells. While an open cockpit with center console and hardtop is totally sufficient, a head and dry storage for gear with maybe just enough space for a bunk for two would be awesome.” Since crab or lobster pot buoys are not much of a concern in Florida, Brandt explored the idea of foil assist to reduce power requirements and improve seakeeping. However, he was adamant about the ability to safely beach the cat and limit overall beam to 9.1 ‘ (3m) to keep the trailering permits manageable.

The Matanzas 29 plywood/carbon prototype has wave-piercing bows with a positive rake and peaked decks that shed water quickly. The bows’ fine entry flattens out toward the stern to encourage planing, even when operating without foils.

He did some preliminary design work himself, but when the project got serious he consulted with Bieker Boats of Anacortes, Washington. Principal Paul Bieker served as the lead designer of the Oracle America ’s Cup sailing team and was instrumental in developing the outrageously fast 72 ‘ (22m) foiling catamarans that ushered in a foiling revolution following the 2013 Cup on San Francisco Bay. Bieker now applies variations of the foiling concept to pleasure craft, most recently with an innovative 53 ‘ (16m) sailing catamaran intended for racing and weekend cruising (see “ Fledging the Eagle ,” Professional BoatBuilder No. 182) and now with Brandt’s foiling powercat.

The basic idea behind foiling is maximizing efficiency while curbing the need for big engines, a notion that has yet to find footing with production boatbuilders. Brandt: “I’m not interested in boats over 25 ‘ [7.6 m] running 250- or 300-hp twin motors. I’ve been doodling around for a year on the idea, spent more time on the hullform, and when I decided to pull the trigger on building one, that’s when I contacted Paul to help me finalize the design, incorporate some of the design criteria and requirements, and make it work from an engineering perspective. He helped crystallize the hull shape and get the details fleshed out.”

Foiling Tech Trickle-Down

A former racing sailor who campaigned a Mini 650, Brandt met Bieker in 2010 while cruising the waters of Puget Sound. He ran his own environmental consulting firm in Seattle and also took up boatbuilding. First came stitch-and-glue kayaks, but soon he graduated to the PT Skiff, an 18′ (5.5m) kit boat by Port Townsend Watercraft designed by Bieker and Russell Brown. With Brown’s encouragement Brandt designed and built the cedar-strip carbon composite Syhoya , a handsome 21 ‘ (6.4m) weekend cruiser powered by a 60-hp Evinrude E-Tec outboard for cruising Puget Sound and beyond.

Previously, Brandt designed and built Syhoya, a 21’ (6.4m) weekender with a 60-hp outboard for cruising the  coastal waters of the Pacific Northwest.

In Brandt’s painstakingly clean and organized workshop a 10-minute drive from his house in St. Augustine Beach, Bieker’s plans laid out on the workbench and the prototype of the Matanzas 29 under construction showed how personal predilection, boating experience, and exposure to innovative design ideas informed his choices. For a simple boat that aims to maximize efficiency and minimize power requirements, the design process was complicated. Some salient features, like the combination of planing hulls with wave-piercing bows and the foil arrangement most commonly associated with fast sailing cats, seem a bit counterintuitive at first, but Brandt explained the underlying thinking.

He wanted to minimize the fatigue of the acceleration/deceleration forces when running the steep chop of St. Augustine Inlet during an outgoing tide, “letting the bows do the work,” rather than endure slamming, Brandt explained. “That’s when we combined the wave-piercing hulls with the foil assist in order to get away from larger engines while still being able to carry the displacement we need, all the things we added that were part of my criteria—the fish boxes and the scuba gear. All that weighs quite a bit, [but we wanted] to manage that with reasonably small motors. That’s how we got to wave-piercing bows and the foils.” Load-carrying capacity, especially at speed, is another reason he decided against displacement hulls.

Passengers can ride on the main deck, under the hardtop, or on the “rumble seat” forward.

Why plywood/composite instead of carbon-reinforced plastic construction, which would have further minimized weight? Brandt reasoned it was less complex and costly for a prototype that has to establish proof of concept and test the nascent market for foiling powerboats. Tooling up for a production run is his goal. The thin plywood—okoume 6mm/1⁄4 “ for the topsides, 9mm/0.35 “ for the bottom—is sheathed in E-glass, a laminate schedule of 200-g (5.9-oz) and 300-g (8.95-oz) layers inside and out. Turn Point Design in Port Town­s­end cut the kit, based on design files it received from Bieker Boats. “That worked perfectly. We have had zero issues with the wood fit,” Brandt recalled. “Every puzzle joint fit the first time.” For the foam-core portions of the boat, he used 20mm (0.79 “ ) Divinycell H80 sandwiched between multiple layers of regular-modulus carbon woven roving of 5.9 oz 0°/90°, and 2×2 twill weave of the same weight, which conforms well to complex 3D shapes. For taping and to reinforce high-load areas, Brandt applied 400 g/m2 (11.8 oz/sq yd) of 45° double biaxial carbon and 9 oz/sq yd (305 g/m2) unidirectionals.

The entire wet deck, measuring 18 ‘ x 10 ‘ (5.49m x 3.05m), was vacuum-bagged with the foam core and three layers of carbon fiber on each side, laid up in various directions. That’s a large piece to build in a compact workspace, so he tackled it first and then stored it against the wall to make room for hull construction. Florida’s warm, humid climate imposes its own demands on working with resins, which ideally are catalyzed and processed in an ambient temperature around 65°F (17°C). Brandt planned to get the big parts done during the cooler time of year, turning on the air-conditioning if necessary and starting at 3 a.m. Doing “the large areas of the hull, we had three layers of glass on the bottom, so running that over 30′ [9.14m] in one shot, even just hand layup, gets challenging, because the initial pot cures before you have the last layer on.” That’s a herculean task for one, but he had help from his wife, Tonya, and then hired some neighborhood kids to do some sanding.

This angle shows the square sterns, the cutouts for the fuel hoses and steering lines, the carbon-reinforced main deck, and the storage boxes.

In addition to all this new construction, Brandt still found opportunities to include some repurposed parts from his Mini 650, which he had raced from Newport to Bermuda and in West Coast regattas. In his stash of spare kit was an extra boom—a 3.7m (11.15 ‘ ) raw carbon tube from CST Composites that always traveled with the boat. It became the beam that holds the anchor roller and forms the front terminus of the foredeck, Brandt noted, adding that he cut and fit sections of carbon spinnaker poles to support the cat’s hardtop.

Outboards with Mustache Foils

As originally conceived, the boat was to be powered by twin 60-hp Suzuki DF 60A three-cylinder outboards. However, working with technicians at Suzuki Marine of North America , which rents shop space from him next door, Brandt opted for the four-cylinder DF 90A, which he considered a better fit for the prototype’s offshore work and for testing the custom mustache foils. Granted, the DF 90A packs 50% more power and a third more weight than a DF 60A, but it’s still modest compared to twin 300s often seen on boats of similar size.

Custom-designed carbon mustache foils on the cavitation plate will boost stern lift as their attitude is adjusted by the tilt and trim mechanisms of the outboards.

“I don’t need 55 knots; 25 is awesome. That’s fast cruising,” he declared. “Every now and then…it’s nice to be in the 30s to run home, but that’s plenty.” If it sounds extreme, Bieker wanted even less. “I think he was initially uncomfortable with the speeds I wanted, until we had a discussion about what the market expects,” Brandt laughed. “The mentality is ‘I gotta be able to go 30, gotta be able to outrun a thunderstorm. I’ve got 40 or 50 miles to the Gulf Stream, and I want to get there in reasonable time.’ Paul’s sweet spot is 15, 16 knots, because you can do that with a lot less power. To go from 16 to 22 knots is a big jump, but 16 knots is not where the market is; it’s not where the utility of the boat is. So I had to push the area of power where he was less comfortable and the threshold of where he did not want to be associated with. That was a big compromise. I credit him for coming my way.”

Outward-facing J-foils forward carry most of the displacement when deployed. Their angle of attack is manually adjustable by ±2° with a sliding bolt, and hinge pins allow the foils to fold up when not in use.

The production of the mustache foils (named after their shape) was outsourced to Chris Maas on Center Island, Washington, a former builder of custom rowing shells and International Sailing Canoes. He said he was using his 3-axis CNC router to machine molds from MDF board and construct the foils in wet layup with Pro-Set epoxy. These foils will be mounted to the cavitation plate, so any adjustment in the angle of attack comes from the outboards’ tilt and trim mechanisms. The main appendages amidships are outward-facing J-foils (similar to those on the 31 ‘ /9.45m Foiler by Enata Marine; see PBB No. 173, pages 39–40). A hinge pin at their heads allows them to fold up when not in use, while the angle of attack is adjusted manually when the boat is stopped, by slacking two bolts and sliding the hinge mechanism fore and aft for a range of ±2°.

“We lofted all the layers carefully,” Bieker said of the foil construction that was performed by Simon Miles, a carbon fiber fabricator in Port Townsend. “We came to 167 layers,” Bieker continued. “Typically we get to within 1mm of the target shape. The structural spar is solid, and toward the trailing edge there’s some hi-temp PVC foam core.” It will be done in five to six cooks at 250°F/121°C (see the sidebar below).

In foiling mode the cat will not be in “full flight” with hulls clear of the water but rather skimming along the surface. As simple and sensibly powered as the boat is, Brandt still wants the capacity to carry a payload of approximately 1,600 lbs (725 kg) for fuel (2 x 35 gal/132.5 l), water (14 gal/53 l) food, paddle, and surfboards, fishing, and scuba gear, a porta-potti, some electronics, and a small refrigerator. To cover his energy needs for starting and house loads, he’ll go with 2 x 75-Ah lead-acid batteries with 650-amp cold-cranking capacity. Two 100-watt solar panels on the hardtop and intermittent charging from the alternators when motoring should keep the lights on and the beer cold.

Deck, stern, and side views reveal the arrangement of the boat with foils deployed and folded up. Note the mustache foils mounted to the cavitation plates of the outboards to increase lift and help trim the boat.

Brandt named his company Matanzas Watercraft after the river that runs past St. Augustine, where he attended high school after emigrating from Germany with his family in the 1980s. Dating back to those days, he knows the surf spots, gnarly riptides, and choppy patches where sea breeze and ebb collide. After dialing in the new boat during sea trials, which include a trip to the Bahamas to test it as a cruising, fishing, and diving platform, he hopes this America ’s Cup–inspired concept will generate the interest that warrants a limited production run. Ideal customers, Brandt reckoned, are sailors who share his passion for water sports, value his high-tech approach to efficiency, and “don’t necessarily need the power that generally is the norm in the market.” It’s a bold bet but one that seems right for the times. “The intent is there, and we have the facilities to do it,” he added.

Dieter Loibner is editor-at-large of Professional BoatBuilder.

Cooking the Foils

While Jan Brandt of Mantanzas Watercraft was putting the finishing touches on his Matanzas 29  powercat in St. Augustine, Florida, the foils were being made at the diagonally opposite corner of the lower 48, in Port Townsend, Washington, roughly 2,500 miles (4,023 km) distant. Working inside his barn workshop that used to house a boatbuilding shop called Seven Seas, carbon fiber technician Simon Miles, 31, stood next to the carbon tool he’d built for the job. He was warming swatches of prepreg with a heat gun to help them stick to the adhesive film he had previously put on top of the cured substrate of the first cook.

Simon Miles heats the prepreg to bond it to an adhesive film he put down onto cured substrate in the foil mold.

Having worked for Oracle’s America ’s Cup team and Mad Fiber, a Seattle company that made high-end carbon racing wheels, Miles is very much at home with high-end carbon work, but this job was new territory, because it required high-temperature tooling, and he was using a new source for the intermediate-modulus prepreg required.

The tooling was built from a plug of machined medium-density fiberboard (MDF). The monolithic carbon mold is infused with Pro-Set High-Temp infusion resin using Sigmatex 660 g/m2 (19.5 oz/sq ft) of 2 x 2 twill, a ply of 200-g/m2 (5.9-oz/sq-ft) woven carbon, and two coats of Pro-Set High-Temp tooling putty against the machine-tool-face end to limit print-through of the heavy woven cloth.

Infusion of the carbon tool.

The centerpiece of the foil project is a 20 ‘ -long (6.1m) shipping container the previous owner converted into a giant oven for constructing high-end carbon fiber parts. “It has Roxul insulation and stainless walls inside,” Miles explained, “and there is a huge heater/blower unit from Electroheat.” For this project, Miles moved the container/oven into his workshop and hooked it up to three-phase power.

To help lower the cost, Miles sourced 108 yd of 190-g/m2 (5.6-oz/sq-ft) unidirectional 250 prepreg from Composite Recycling Technology Center (CRTC) in Port Angeles, Washington. The material was rejected for use in aerospace applications, hence the substantial savings. At CRTC it was stored at 0°F (–17.8°C), which is common for prepreg. Once out of the freezer it must be processed quickly, but the cool ambient temperatures of the Pacific Northwest winter (at or below 50°F/10°C) allowed Miles enough time to complete the work.

Some complexities: The foils, designed by Bieker Boats, comprise 167 layers of carbon laminate, 144 of them unidirectional 0°, the rest off-axis plies (±45°). In the lower part of the foil, the structure will include foam core (Divinycell H100 foam) and Gurit SE 84 laminates. Miles said he planned to switch to the lower-temperature prepreg so the foam does not “blow up.” At 250°F (121°C) H100 distorts, changing density and dimensions, but SE 84 cures below that threshold at a cooler 176°F (80°C). Miles said he would still precook the Divinycell to reduce the chances of expansion after the foam had been shaped. To finish, he will use woven cloth for wrapping, and SE 84 as well. Lastly, the B-side will be faired and sanded.

Miles estimated total construction time would run eight weeks for a springtime delivery.

Dieter Loibner

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What People Are Saying

Why Foilcat?

The FoilCat Team is relentlessly dedicated in our pursuit of the ultimate user experience accentuated by the highest performance and safety standards throughout the marine industry.

A RIDE LIKE NO OTHER

The foil greatly improves ride quality and efficiency.  Reduction in operator and passenger injury and fatigue.

CUSTOMIZABLE

Built to suit from collars to cabin tops and the engines on the back. We work with you to create your dream watercraft.

IMPROVED RANGE

A greater range on same volume of fuel vs any other platform. Our models are 40-50% MORE fuel efficient than our market competitors.

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F1x A-class foiling catamaran

World champion, lighter = better, craftsmanship, meet the foiling f1x a-class catamaran.

This is the ultimate singlehanded foiling catamaran of the moment: ultramodern, incredibly fast, very agile, extremely strong and feather-light, in an aerodynamic and ergonomic design. The perfect total package, packed in 1 foiling catamaran. This is the world’s coolest boat for singlehanded races and the winner of several A-cat world championships and many other sailing races.

The 2020-F1x A-cat is exactly the same foiling catamaran that made Mischa Heemskerk Vice-World Champion at the Herveybay Worlds 2018 in Australia and World Champion at Weymouth 2019. All our foiling F1x A-class catamarans come straight, ready to race and ‘Mischa-tuned’ from our factory.

Unique design enables top performances

The F1x A-class foiling catamaran is the ultimate reflection of our current design language. The aerodynamic design accentuates the performance qualities of this super fast foiling racing boat. The sophisticated deck plan provides clear control and minimal air resistance.

Foils The rudders and daggerboard foils used on the F1x A-class foiling catamarans are produced with the highest quality carbon pre-preg fibers. The foils are cured in our own Autoclave . Our winning foil design was created in close cooperation with Glenn Ashby and the designers of AC Team New Zealand .

Construction The F1x A-cat is manufactured entirely according to the carbon pre-preg/ Nomex production method, and cured in our Autoclave. This technology is the same as used in the aerospace industry and within other foiling boats like for example, the America’s Cup.

Design The design of the F1x foiling A-class catamaran was completely conceived by the DNA design team and made at DNA’s own yard. In the DNA design team Pieterjan Dwarshuis, Mischa Heemskerk and the renowned Dutch industrial design engineer Rudo Enserink worked closely together to create the perfect foiling A-class catamaran.

We build your new foiling boat!

Technical details.

The F1x A-class foiling catamaran has a number of unique features that improve performance. For example:

• Semi ridged trampoline. Gives extra torsional stiffness to the boat and increases its aerodynamic characteristics.
• Patented main-sheet-wheel-system. For more direct and faster trim of the main sail.
• Aerodynamically placed traveller car.
• Flexible daggerboard casings. For minimal water absorption in floating mode.
• Aerodynamically shaped ‘beams’.
• Adjustable T-rudders. Foiling with rudder differential is possible.

Specifications

LOA: 5.49 m BOA: 2.30 m Max. draught: 1.20 m Sail area: 13.94 m Total weight: ca. 53 kg Top speed: 31 kn Extra: All measurements according to IACA Class regulations.

Buy a champion's boat!

Are you excited to buy a F1x A-class foiling catamaran from DNA Performance Sailing? Please fill in our contact form:

Yes, I want a F1x A-cat!

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• Nacra 17 Olympic

Flying an Olympic Powerhouse

The Olympic standard in multihull sailing worldwide. Now upgraded to fully foiling beast. The first leisure catamaran built to Olympic standards.

The revolutionary Nacra 17 Olympic is the ultimate multihull for athletes. Now with full foiling capabilities, the 17 is faster than ever. Since the 2016 Rio Olympics, sailors keep pushing boundaries and setting records. With continuous innovation, performance keeps getting better. A true powerhouse. 

The Nacra 17 is the Olympic standard in catamarans. It is the world wide bench mark in profesional sailing. The Nacra 17 exhumes quality, speed and durability. Its curved foiling daggerboards give the cat space craft like features. The thrill to sail the Nacra 17 will stay with sailors capable enough the drive this high powered machine.

Usage Olympic racing Competitive racing Foiling

Crew 2  Mixed sailors

FLYING ON THE HIGHEST STAGE IN SPORTS

The original Nacra 17 was initially designed to follow World Sailing´s strict requirements for the Olympic multihull. It was fitted with curved daggerboards at the 2016 Olympic Games in Rio de Janeiro, to provide extra buoyancy and boost its efficiency both downwind and upwind. In response to recent developments and requirements, the next generation Nacra 17 Olympic has now been upgraded into

a fully foiling race machine. The  Nacra 17 Olympic  is designed in collaboration with Morrelli & Melvin, a world-famous design office known for many other successful multihull projects. The Nacra 17 Olympic ‘s base obviously lies in the performance of the America’s Cup boats, also involving Morelli & Melvin. Once you start flying a Nacra 17 Olympic , you’ll realize its tremendous power on the water. 

UPGRADED FOILING Challenging, exciting and dynamic – the next gen  Nacra 17 Olympic is taking catamaran sailing to the next level. The quality standards for rigging, hull contruction and sail plan are unprecedented. The full carbon set-up engineered by a team of dedicated professionals has shown not only full foiling speed records but surprising durability at the same time. The Nacra 17  Olympic  comes standard in the full Olympic configuration, with curved and Z-foil daggerboards. Sailing the next gen Nacra 17 Olympic takes guts, physical strength, tactical ability and focus – a true Olympian’s craft.

NEW SAIL PLAN Being the only multihull sailmaker in the world granted the right to make official Olympic sails by World Sailing, Performance Sails delivers high quality hand made sails. Their 30+ year expertise in the catamaran racing world makes sure your sails can handle anything. The Pentex™ mainsail and jib are strong and durable, as is the polyester spinnaker. Since 2016 Performance Sails offers fully printed spinnakers with your country’s flag or sponsors, with a negligible weight increase of only ~0.2g/m 2 .

• Nacra Users & Owners Manual
• Nacra Assembly Manual Nacra 15 / F16 / 17 / F18 / F20
• Nacra Assembly Manual Nacra 17 Olympic V2
• Nacra 17 Front Crossbar
• Nacra 17 Rear Crossbar
• Nacra 17 Spinnaker Pole
• Nacra 17 Spinnaker Pole (Sloop)
• Nacra 17 Tillerbar
• Nacra 17 Olympic Rudder Template
• Nacra 17 Olympic Rudder Manual (2018)
• Nacra 17 Olympic Differential Rudder Rake Manual (2022)
• Nacra 17 Olympic Front Crossbar
• Nacra 17 Olympic Footstraps
• Nacra 17 Olympic DB Trimwheel Line System
• Nacra 17 Olympic Continuous Line System
• Nacra 17 Olympic Daggerboard Case Line System

Specifications

Ready to start flying?

ON SELECTED MODELS

All models outfitted with an Foiling Package ( FCS or   Flight Control System for short ) are ready for full foiling – during your sail, specialized hydrodynamic daggerboards combined with upwards pressure make you get a controlled ‘flight’, meaning your whole boat will be above the water, rather than in it. Make alterations on the water during your flight to find the groove you are looking for and fly over water to leave others behind.

These so-called  Foil sets are designed to fly in a wide range of weather conditions, to make competitive catamaran sailing accessible to even more sailors, and are built to meet the highest safety standards. A real treat for the more, or a little less, experienced sailors.

Using the best possible manufacturing techniques available, we’ve obtained maximum strength with minimum weight using autoclave technology, curing the pre-impregnated carbon/epoxy at 120 degrees Celsius at an atmospheric pressure of 6 bar. It will put you miles ahead of any fleet in terms of performance and joy.

Nacra 17 Class

The Nacra 17 class organization is involved in every step the Olympic boat takes. After the Olympic Games in Rio de Janeiro, the class and Nacra Sailing agreed to evolve the boat to become a full foiling catamaran. The Nacra 17 class is open to any sailor with Olympic ambition.

Nacra 17 Class website

See all Nacra models

Shop all your spare parts and accessories directly from our online store.

Shopping for your business?

Do you order for a sailing school or club, a resort, or do you want to become a Nacra Certified Dealer? Contact Nacra Sailing to apply.

© Nacra Sailing INT. 2024

SIT&FLY

you can  fly

THAT FLIES ALONE

Extended version on your desktop computer

A foiler designed for any sailor.

The idea was to create a SIT & FLY foiler, that is to say a boat with foils that practically flew alone, and endow it with an exceptional stability so that any sailor could fly easily, regardless of their physical or technical preparation, also allowing them to access into the competition with foils so far suitable for only a few specialists.

The mothquito foiling catamaran perfectly meets this objective. proof of this is that none of our riders had ever flown on a boat with foils before and as you will see in the videos they all fly without any difficulty. , i sincerely believe that it is the best guarantee that the mothquito is made for you., you will soon be able to try it for yourself. happy flight.

Designer and CEO:

IFS Foiling & MOTHQUITO

THE BOAT THAT FLIES ALONE

The Mothquito Foiling Catamaran is the first foiler in the world with an increased dynamic stability and performance, by the IFS system, a system that increases its dynamic length and beam to make foiling easy, safe and fun for any sailor.

Due to this system, the Mothquito surprises with its great stability, both at take-off and during flight, requiring the crew member simply the same physical effort that would be required to sail in any conventional dinghy boat without trapeze and without the need for a special technique.  

In the Mothquito you just have to sit down to sail and the boat will practically will flies alone.

For all these reasons, the Mothquito is an easy and suitable foiler for all types of sailors, a true SIT & FLY.

At the same time, it can be a fundamental tool for schools and training centers, which are increasingly in demand for easy-to-fly, stable, yet fast and fun foilers.

But make no mistake, the Mothquito is more than just a docile and stable foiler. The Mothquito is a high performance catamaran racer. With a dynamic beam in flight of 4.8 m2, this boat manages to significantly increase its righting moment, which allows it to have a sail area of ​​17.5 m2 in its basic configuration, to launch the boat at high speeds without heeling or feeling of risk.

With mothquito you don`t need:.

Previous experience.

Specific technical training.

Special physical preparation.

Navigate against heeling as in the Moth.

Hang on a trapeze compromising your safety.

Height sensors and flaps to regulate the flight height, since its V foils automatically regulate the height.

Increasing the dynamic length:

You increase longitudinal stability, improving dynamic longitudinal trim in flight and reducing the risk of nose dive and pitch poles., increasing the dynamic beam:, increased transverse stability is achieved, increasing righting moment and performance, with a significant reduction in heeling., that is why mothquito marks a before and after, a new concept in the world of foiling which is summarized in a single expression:, sit & fly.

With Mothquito you know how.

BACKGROUNDS

As foiling progresses, more and more fans and sailors want to experience the sensation of flying, even if only once.

But the reality is that many of them are in doubt as to whether they will be able to fly continuously and controlled, since flying these machines does not seem as easy as sitting down.

In many cases, it requires significant physical preparation and endurance to be able to keep the balance in flight based on counter-heeling, making counter balance and playing with the mainsail sheet hunting and molding to maintain balance and not repeatedly go overboard.

In other cases, as in the majority of catamarans, it will be necessary to hang on the trapezoid to reduce the heeling, and at high speeds the maneuvers are very fast and precise, so the risk in these circumstances does not It exactly coincides with the idea of ​​enjoy it.

In summary we can group the current foilers into 3 large groups:

They are small foilers, monohull or multihull, for a single handed and they have a central inverted T-foil and another inverted T-foil in rudder on the same line. When they are monohull, flying on these boats without falling into the water is not easy. You have to establish a continuous balance by flying against heeling and keep your balance playing with the main sheet, and your weight.

In the case of multihulls, the outer hulls act as a float to stop preventing the overturns, as the small lateral wheels do on a bicycle when the child learns. but this solution does not eliminate the difficulty of the flight and slows down the speed of the boat every time the float enters into the water. they also use flaps with mechanical height sensors to control the flight height, and therefore require care and maintenance., they are dinghy catamarans for single or double handed and have four inverted t-foils., with a dynamic beam of around 2.5 m, which usually coincides with their hull beam, these foilers are much more stable than the 2t foils, but in them the use of trapezoids is usually common to compensate the heeling, which not everyone likes and less at high speeds., they also use flaps with mechanical height sensors to control the flight height, and therefore require care and maintenance., 2j + 2t foils, they are high-performance catamarans, of greater length and for more than two or three crew. it is common to see them compete on international circuits. their main foils are in j, which is the same as an underwater v when the boat heels, so they regulate the flight height without the need for flaps. they are very technical boats that require a lot of training and good physical shape. in addition they are not affordable since their price is usually not within the reach of every pockets..

If you are a training center or sailing school...

We are developing a strategic plan for the commercialization and international expansion of the Mothquito that may interest you.

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Just enjoy high speed - foiling

” iFLY – Born to FLY “

Just enjoy foiling, ” high performance sailing “, ” we love speed “, ” join the adventure “.

iFLY15 – Technical SPECS

Length 4.63 m, 15 ft..

A Foiling Catamaran for 1-2 person(s) does not need to be any longer than this. The ancient rule that says you need length to achieve speed does not apply, as hulls do not touch the water at most times.

Width 2.50 m.

This width provides plenty of righting moment, still being road legal ato be transported in horizontal position without disassembly.

7.5 m mast / 11.2 sqm mainsail

7.5 m mast with 11.2 sqm deck-sweeper mainsail. – 8.5 m mast on iFLY RAZZOR Pro with bigger rig

Draft: 95 cm

Weight: 90 kg.

90 kg ready to sail. A very light boat, providing nonetheless excellent stability for everyday suitability.

Crew 1-2 - max.180kg

Flysafe® foil control.

T-Foils Main Foils and Rudders FlySafe automatic dynamic foil control Additional Option: Main Foil Differential >>>

Know More >>>

Different - Rig Options

LATEST DEVELOPMENT OF “DECK SWEEPING” MAINSAIL THE ROLLABLE HERU WING RIG LIGHT WIND FORESAIL «CodeF»

Full Carbon Hulls

Looking for the perfect setup for your foiling sailboat.

We can recommend the best iFLY setup and accessories for your boat. Get in touch for the ultimate sailing experience!

Performance

A great number of innovations all over the catamaran and the perfect match of all components allow controlled high-speed foiling experience. iFLY15 is full of innovations, e.g. in hull design, hydrofoils, rudders, automatic flight control system, two-layer wing trampoline, high performance rig…

HULL Design

full carbon – lightweight – performance design: Born to foil

High Performance Rig Options

LATEST DEVELOPMENT OF “DECK SWEEPING” MAINSAIL WORLD PREMIERE: THE ROLLABLE HERU WING RIG : WORLD PREMIERE: LIGHT WIND FORESAIL «CodeF». ALLOWS UPWIND FOILING (as well as other courses/points) ALREADY IN EXTREMELY LIGHT BREEZE. Know More >>>

Two Layer Trampoline

AERODYNAMIC INNOVATIVE WING TRAMPOLINE CREATING LIFT.

Full Carbon T-Foils 

SCIENTIFICALLY DEVELOPED high-end foils for early take off, high speed and maximum stability.

flySafe® dynamic foil control system

The foils are controlled independently, dynamically and precisely on both sides by the flySafe® foil control system . This enables high performance sailing through stable flight. The unique foil control system of IFLY15 is a 7 years proven system developed by CEC Catamarans.        Know More >>>

IFLY MAIN FOIL DIFFERENTIAL TECHNOLOGY

MDT FOIL CONTROL – iFLY rake control The sophisticated main foil differential is an active flight assistance – The Rake is adjustable while sailing. Advanced Rake Control is for the experienced, performance-oriented Catamaran sailors / pro sailors and is a feature on the iFLY RAZZOR Pro.      Know More >>>

Innovations and more   >>>

In the hand of the experienced sailor, iFLY15 is a high-performance racing machine. STABILITY IS NOT CONTRADICTORY TO HIGH PERFORMANCE OR SPORTINESS , on the contrary, it is a prerequisite for safe reaching and maintaining constant high speeds. Stable flight allows the sailor to concentrate on the course, on the wind, as well as on opponents and strategy – rather than permanently getting distracted by working on the foiling balance.

EARLY TAKE OFF IN WINDS AS LOW AS 2Bft. / 6 KNOTS , by combining the innovative “KickOff” foil control with a trampoline that provides boost and with the latest generation of rig and foils.

BOAT SPEEDS FAR BEYOND DOUBLE WIND SPEED CAN BE ACHIEVED . Enjoy high speed foiling with top speeds far beyond 25 knots – in ideal conditions up to 30 knots.

CONTROLLED FOILING EVEN IN THE UPPER WIND RANGE BEYOND 22KNOTS OF WIND SPEED – supported by the new FlySafe® Automatic Foil System.

FOILING PLEASURE AND PERFORMANCE ALSO IN CHOPPY WATERS

FREEDOM ! FLYING SOLO OR OPTIONAL WITH CREW . You have the choice. No manhunt for crew. But still enjoy the opportunity of taking a friend or family to fly with you. Up to 140kg of crew weight. (To keep the boat and especially the mast light, we specified the iFLY15 components intentionally not for double trapeze.)

NO HOISTING AND LOWERING OF DAGGERBOARDS while sailing. (Only for beaching or in shallow waters.)

FREEDOM TO SWITCH BETWEEN FLYING MODE OR SAILING AS A CONVENTIONAL CATAMARAN (with at least the leeward hull touching the water). Within seconds iFLY15 can be switched to Non-Flight mode, even while sailing. In that mode, iFLY15 will not take off, but the foils will still create lift and give an extra agile sailing behavior, which is on the same time very stable as rudder Foils will avoid pitch poling. Non-Flight mode is providing additional security in extreme high wind speeds. It is also useful for less experienced sailors or in all situations, where taking off is undesirable (e.g. in the harbor or while towing…).

EASY TO LEARN FLYING BY AVERAGE SKILLED AND TRAINED SAILORS

EASY BEACHING AND SLIPPING , as simple as with any conventional beach catamaran by using a standard catamaran beach trolley. Foils remain flat under the keel, with the daggerboard lifted as on a conventional catamaran.

SIMPLE TO DISASSEMBLE PLATFORM . Width of 2.50m is also road legal in most countries for horizontal transport without disassembly.

DAGGERBOARDS CAN BE PLUGGED IN FROM ABOVE and Foils securely anchored from below with one central screw.

FAST SET-UP OF THE iFLY15 FROM ROAD TRAILER TO SAILING . Simple rigging the mast, no genacker boom, no foresail, no spi.

SILENT AND CALM PLANING ABOVE THE WAVES . Flight height of up to 90cm, avoiding even high waves below.

EASY TO FOIL THE JIBE (without landing). Stable maneuvers are made easier by the fact that the four T-Foils always remain in the water.

« INTERNATIONAL FORMULA 15 FOIL » Class Association. The new development class for FOILING, SINGLE HANDED on MULTIHULLS. Multi manufacturer class in the tradition of a Formula18, A-Class or international Moth. Enables large regatta fields and evolution of the boats, following the technical progress (which is especially essential in the case in Foiling). Strict regulations to avoid uncontrolled exaggerated development.

Contact : [email protected]

Catamaran Europe Central

The iflysail team, is looking forward to your message, more to know about ifly foiling , interesting tech, high performance rig options >>>, flysafe® dynamic foil control system >>>, ifly main foil differential technology >>>.

MDT FOIL CONTROL – iFLY rake control

News and More

Ifly foiling experience >>>, press articles >>>, events >>>.

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Improved Efficiency with Hydro Glide Foil System™

The Aquila Hydro Glide Foil System™, designed by catamaran and foil specialists Morrelli & Melvin Design & Engineering, is available as an option on the extremely popular Aquila 36 Sport  as well as the Aquila 42 Yacht . It enhances the performance, consumption, and handling of the already spectacular performance of these two power catamarans. For the Aquila 36 Sport, the hydro-glide foil improves miles per gallon by 40% when compared to a competitor's 36' power catamaran and decreases the fuel consumption rate by 37%. 

As reviewed by Boating Magazine: “It’s hard to believe that a piece of metal with no moving parts can be the approximate equivalent of adding 200 horsepower, 100 gallons of fuel, and 100 miles of extra range.” But, that’s what happens when the Aquila Hydro Glide Foil System is attached between the two hulls. 

Improved Boat Efficiency | Aquila Hydro Glide Foil System™

An In-Depth Look at the Hydro Glide Foil

How the Hydro Glide Foil Came to Be

Have Questions?

Request an Aquila Brochure

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40 Foil-Assisted Catamaran

Typical specifications.

LOA: 40’ BOA: 14’

For detailed specifications, contact us today.

The “Flying Hub II” shown here is a 40-foot custom welded-aluminum passenger vessel designed by Jutson Marine Design and built by Metal Shark for a Florida-based fishing and tour boat operator. This innovative vessel features a highly efficient foil-assisted catamaran hull and has been built to USCG Subchapter T standards.

Hull Design

Deck Layout

40 Foil-Assisted Catamaran Image Gallery