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LINX TENDERS ARE HIGH-SPEED HYDROFOIL-SUPPORTED PLANING CATAMARANS

Shallow draft catamaran hulls, linx30 highlights.

hydrofoil supported catamarans

Linx 30 Showcase

With beach-landing bow door option, linx30 360º viewer.

Cruising Speed

180 nm at 24 kts

Lightship weight

From 3000 kg

Max displacement

Fuel Capacity

400 - 600 l

HYDROFOIL SUPPORTED PLANING CATAMARAN

Hull technology (hspc), excellent stability for sport fishing and diving, twin inboard diesels, or twin outboard engine options, customisable deck options - open layout, or cabin versions, folding carbon fibre bimini & low profile hull for onboard stowage, customisable options.

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

Review Team

  • 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.

Keppel Bay from Above

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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Review Team

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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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40m Catamaran Crew Boat

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30m Ambulance Boat

30m Ambulance Boat

25.5m firefighting catamaran with telescopic fire monitors (FIFI 1 compliant)

25m SAR  Catamaran

25m SAR Catamaran

Search and Rescue Catamaran with firefighting capability developed for the Macau Airport Authority

25m Firefighting Catamaran

25m Firefighting Catamaran

15.6m HYSUCAT Ferry

15.6m HYSUCAT Ferry

15.6m HYSUCAT Ferry Leading Particulars Length overall 15.6m Length waterline 13.4m Beam 4.9m Draught (max....

14.9m Water Taxi

14.9m Water Taxi

14.9m Water Taxi Leading Particulars Length overall 14.9m Length waterline 12.7m Beam max. 5.45m...

12.5m HYSUCAT dive boat

12.5m HYSUCAT dive boat

12.5m HYSUCAT Dive Boat Leading Particulars Length overall 12.5m Length waterline 10.2m Beam max. 4.2m...

11m HYSUCAT excursion boat

11m HYSUCAT excursion boat

11m HYSUCAT Excursion Boat Leading Particulars Length overall 10.9m Length waterline 8.6m Beam max. 3.8m...

11m HYSUCAT

11m HYSUCAT

11m HYSUCAT Leading Particulars Length overall 10.9m Beam max. 3.98m Draught 0.6m Performance Service speed...

10m HYSUCAT

10m HYSUCAT

10m HYSUCAT Leading Particulars Length overall 10.1m Beam max. 3.49m Draught 0.44m Performance Service speed...

17.3m eCat HYSUCAT

17.3m eCat HYSUCAT

17.3m eCat HYSUCAT Leading Particulars Length overall 17.38m Length waterline 15.64m Beam overall 6.45m...

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Malan Conradie - Hysucat Design

Leading international designer of Hydrofoil Supported Catamaran' since 1996. All design and developments having been done in collaboration with Professor G. Hoppe and the University of Stellenbosch.

The hull and hydrofoil designs are designed and tested in the towing tank facilities at Stellenbosch University and often actual sea trails are carried out in offshore racing events to establish the final hull design. All design and technical work including the exterior and interior designs are completed inhouse.

We also handle the project management for the construction and mould process, while Prof. Gunter Hoppe is responsible for the hydrofoil design.

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Designed with a singular vision...To deliver unmatched performance and efficiency!

Introducing the insetta 35ifc  – the bar has been raised.

The Insetta 35IFC was designed with a singular vision… to be the best-performing center console sport fishing catamaran in its class.  Enjoy unmatched performance, range, and efficiency thanks to the 35IFC’s hydrofoil-assisted design.

In addition to being the best High-Performance Fishing Catamaran in its class, it also provides a smoother and dryer ride in the rough stuff!

This boat was designed for people who fish, by people who fish!  From its integrated livewells to its cavernous coffin boxes, level open deck layout, massive insulated storage and so much more, this boat was designed for maximum range and fishability!

Here’s what our customers have to say: “Holy crap do I love my 35 IFC with the Merc 300 V8’s on the back. We ran her down to Key Largo the other day, snorkeled all day, got lunch at Shipwrecks Bar and Grill, and ran back. Cruised between 40 and 45 mph, mostly around 42. So smooth it’s nuts. Burned maaaayyybe 40 gallons for the whole day. As we cruised the dashboard was telling us between 1.7 and 1.8 mpg, but I’m pretty sure we cruised more than 40 miles and burned between 35 and 40 gallons, no more. So… suffice it to say that you guys have absolutely crushed it and changed the game here. Fantastic work”! – Alan, Hull #4

Check out our FAQ’s section below for more about the Insetta 35 with  IFC!

Specifications

Length Overall

Maximum Beam

Maximum Draft

Fuel Capacity

Cruise Speed

Cruise Miles Per Gallon (MPG)

Over 850 miles*

Cruise Range

Standard Features

Standard “Insetta White” Gelcoat Molded in Diamond Non-Skid Tackle Storage Stbd Side Tackle Storage Port Side 19 Gallon Freshwater Washdown/Shower 5 x In Deck Storage Hatch 2 x In Deck Macerated Fish Boxes 625 Qt Insulated Coffin Box, Split Boxes Walk through Transom Access (Door Optional) Two 36 gallon Integrated Transom Livewells Fresh and Raw Water Washdown 34 Rod Holders (gunnels and coffin box) 7 Stainless Gemlux Pull-Up Cleats LED Navigation Lights Boarding Ladder

Recessed Stainless Bow Rail

Helm / Console

Fiberglass Hardtop with Powder Coated Aluminum Supports Tempered Safety Glass Enclosure for Console 6 Integral Rod Holders Built into Rear Support Molded Fiberglass Leaning Post with Rear Face Seating and cooler 3 Wide Helm Seats 6 S/S Cup Holders Storage Box and Rigging Tray on Rear Facing Seat Storage Drawers Under Helm Seats 165 Qt Leaning Post Ice Box Located Under Rear Face Seats

Base Upholstery

Equipment and Electronics

3 Part Internal Foil System

3 Pump Capacity Sea Chest with Dual Livewell Pumps & Raw Water Feed

4 1100 GPH Bilge Pumps (2 in Each Sponson)

Standard Capacities

490 gallon fuel capacity.

625 Qt Insulated Coffin Box with Divider

165 Qt Leaning Post Ice box

Dual 36 Gallon Livewells

19 Gallon Freshwater

Frequently Asked Questions

IFC is Insetta Boatwork's Internal Foiling System.

You can expect a significant increase in cruise speed; Improved handling and stability in rough conditions; Better acceleration; A boat that is less affected by increased payload; A 20-40% increase in fuel efficiency; and a 20-40% further cruise range! Additionally, the IFC technology will also provide a drier ride in choppy conditions and Provide for more responsiveness when turning at speed!

The system is a fixed setup, there is nothing to operate and there are zero moving parts.

The IFC Technology in effect smooths out rough seas by allowing the boat to run from wave crest to wave crest at a relatively smooth and stable attitude. The IFC System creates lift which help to in effect “Carry” the hull higher in the water. The system acts as a set of wings carrying the boat at speed, keeping the hull from having to follow each wave across its entire contour. In other words the surface of the waves have less effect on the hull as the IFC system is lifting the boat. Additionally, the aerodynamic lift created by the catamaran hulls creates even more lift at the bow of the boat, keeping the nose high and preventing the “slamming” or sneezing found in other catamaran hulls.

No, you don’t. The foils are flush mounted to the bottom of the keels of each sponson (as well as up in the tunnel.) At its centerline the main foil of the IFC system is only slightly lower than the keel line. The boat will easily load onto a standard catamaran trailer. There is no big contraption hanging way down under the boat.

Remember, the foils are INTERNAL to the tunnel. At its lowest point the main foil is only slightly lower than the hull and is higher than the props. Because of this the odds of striking the foils are extremely low. The boat is designed to be lifted by the foil. The structural integrity of the foil system is such that the weight of the boat could be supported many times over by the foil. As such, if you did somehow manage to strike the foil on something EXTREMELY SUBSTANTIAL, like a stone shoal, the likely outcome is that you may (in a very worst case scenario) bend or break a foil wing. If that were to happen, you could still operate the boat to port with the remaining foils. The IFC foils are made from a very high-grade stainless steel and designed to meet or exceed relevant guidelines for impact and strength.

As water travels through the tunnel and around the foil, a tremendous vortex is created. This force keeps most debris from being trapped in the tunnel or around the foil. Between the pressure of the air moving through the tunnel, and the vortex created in the water, the tunnel and foils will stay clean and clear.

The outboards of the 35 IFC are mounted on a slight outward angle to place the propellers properly to maximize the thrust and flow efficiency created as the water travels through the tunnel and around the foils. This mounting also helps the boat to lean into a corner, much like a monohull.

Firstly, we’d ask, “Why would you want to?” But the short answer is no. IFC is an integrated system that is integral to the design of the boat.

The short answer is that boats with technology similar to IFC have been in use for many years, but not in the recreational market. Commercial and Military applications are quite prevalent. The initial design of a hull and system like this is quite complex and can be cost prohibitive. We at Insetta feel the gains in efficiency, speed, range and ride quality far outweigh the initial design and build cost.

Upon deciding to build a foiling Cat, Insetta assembled a team of naval Architects and Marine Engineers to refine an existing and proven design. Using their own state of the art construction techniques, Insetta brought an application specific version to the fiberglass Center Console market.

Optional Features

Customizable Garmin or Simrad Electronics JL Audio 10 Speaker Stereo System Flush Mount Acrylic Helm Bow Shade Custom Gelcoat or Combination of Colors Deluxe Upholstery Third Center Livewell Under Rear Facing Seat 40 gallon Seadek Flooring or Flexiteek Decking Additional Gunnel Rod Holders (18 standard) Recessed Wireless Phone Chargers Swivel Base Rod Holders Outlets for Electric Reels Additional Drink Holders on Leaning Post, Coffin Box, Gunnels and Helm Forward/Rear/Side Spreader Lights T-Top Outrigger Bases/Poles Gemlux Electric Head With 19 Gallon Blackwater Holding Tank Freshwater Sink and Vanity Inside Console Underwater Lights Heavy Duty Dive Ladder LED Under Gunnel Lighting On-Board Battery Charger Windlass Custom Aluminum Trailer Cockpit Table/Bow Table

Why did Insetta Boatworks decide to build a boat with IFC?

For decades, Hydrofoil power boats have proven to be the most efficient craft for a variety of offshore operations.

While pursuing a B.S. in physics in 1960, Victor Insetta was employed doing anti-submarine research that utilized high speed Deep-V patrol boats equipped with hydrofoils. Their ability to pursue submarines at high speed, operate safely offshore, and, being foil borne: allowed their hull to run clear of the water avoiding direct hits from torpedoes. Decades later, Vic and his family rode comfortably on hydrofoil ferries in Italy, flying over white capped waves in the bay of Naples.

In 2017, The Insetta 45 was chosen to be the official chase boat of the America’s cup! Four 45’ Insetta’s catamarans were shipped to Bermuda to assist at various cup events. Sailboats, competing from several countries, were catamarans with hydrofoils ! The Insetta 45’s ran parallel to these “foiling sail cats” to assist with TV coverage. The sailing cats were traveling at speeds approaching 50 mph, 2 ½ times the wind speed . Efficient … you bet . They could also turn on a dime at over 40 mph…

It became obvious: that a foiling cat would make a great offshore outboard power boat… Many foil power boat designs in the past, had wide foils that stuck out the sides, increasing their beam and draft. It made them difficult to dock, and they couldn’t operate in shallow waters. Joel Shine (chief operating officer) of Insetta Boatworks found a catamaran design that had hydrofoils mounted in the tunnel, (that location between the tunnel walls actually improves their efficiency), and does not add to its draft. Further improvements could be added by using our ultra-light high strength infused composite construction.

Joel, Vic and our technical staff reviewed the foiling cat’s initial specifications and performance data, and then sea trialed two foiling cats with internal hydrofoils. Our staff includes a second physicist and pilot… Glen Dobbs. We are all active boaters and we determined we would build our version of a foiling outboard powered cat. We contacted a Naval architect, who designed several successful foiling power cats . He is now a member of our technical staff.

Our 35 “foiling cat” design has set the standard for Foil-Assisted Sportfishing boats. The hull, foils, materials, and engines are synergistically combined, to provide: unrivaled high-speed cruising efficiency , and provide safe offshore handling, with unimpeded shallow water operation, including beaching, without foils or props contacting the bottom.

Insetta 35IFC

The premier internal foiling catamaran.

hydrofoil supported catamarans

Integrated 36 Gallon Livewells & 625 QT Coffin Box Standard

Designed to fish.

hydrofoil supported catamarans

850+ Mile Range!

Shows the Internal Foil Catamaran

Best in Class MPG, Smoother/Dryer Ride!

Performance.

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hydrofoil supported catamarans

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

hydrofoil supported catamarans

Deck Layout

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40 Foil-Assisted Catamaran Image Gallery

  • View Record

https://nap.nationalacademies.org/catalog/27432/critical-issues-in-transportation-for-2024-and-beyond

TRID the TRIS and ITRD database

OPTIMISATION OF HYDROFOIL-SUPPORTED PLANING CATAMARANS

A hybrid catamaran with a special hydrofoil system (Hysucat) was developed and lead to the construction of about 100 seagoing craft, the largest being 36m with a top speed of 38 knots. The early designs were optimised by the use of systematical model tests. A theoretical method in the form of a computer program is presented and allows more detailed design parameter recognition and further optimisation by systematical parameter variation. The theoretical result is approved by model test data and prototype trial data comparisons. The theoretical design prediction is shown to be realistic and the main parameter influence on the hydrodynamic performance is well presented as shown on an example of a 22m Hysucat ferry which compares well with hydrofoil, SES, hovercraft and catamaran designs.

  • FAST '95, 3rd Intl Conf on Fast Sea Transportation, 25-27 Sept 1995; Lubeck-Travemunde, Germany. Procs. Ed by C.F.L. Kruppa. Publ by Schiffbautechnische Gesellschaft, Germany. Vol 1, p 307 [12 p, 13 ref, 12 fig]
  • Publication Date: 1995

Subject/Index Terms

  • TRT Terms: Catamarans ; Hydrofoil boats ; Optimization ; Planing hulls
  • Old TRIS Terms: Hydrofoil craft
  • Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

  • Accession Number: 00733134
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1997 12:00AM

Ocean Foiler

What is a Hydrofoil Supported Catamaran (HySuCat): A patented hybrid catamaran hull consisting of asymmetrical sponsons and unique bow design, incorporating a special hydrofoil system with more than a thousand vessels produced globally; ranging in size from 5 m to 65 m.

hydrofoil supported catamarans

Why Use Foils: Hydrofoil supported catamarans work on the principle that a significant portion of the vessel mass is carried on the foils at planing speeds, lifting the hull partially out of the water. The lift-to-drag ratio of a hydrofoil is typically L/D =20:1, while that of a typical planing hull is L/D = 5:1. Therefore, the load frac­tion on the foils is being carried four times more efficiently than that on the hull. From a resistance point of view, it makes sense to carry as much load on the foils as possible and get the hulls out of the water as much as possible. It is even possible to lift the hull completely out of the water, as modern foiling sail craft do, with this providing the most hydrodynamically efficient solution.

However, keeping the hull partially in the water offers three distinct advantages:

First , with the hulls still in water contact, conventional propulsion such as standard inboard and outboard engines can all be used in their standard proven configurations.

Second , the hulls being in contact with the water provides the necessary stability in pitch and roll.

Third , the depth of submergence of the hydrofoils controls the lift and attitude of the vessel, without having to rely on adjusting the control surfaces of the foils by any external mechanical or electrical mechanism, making the system very robust and economical to produce.

The performance advantages of hydrofoils are significant and have been proven on thousands of watercraft vessels;

In short choppy head and confused seas the ride is extremely smooth, with the hydrofoils allowing the vessel to run on the crests and act like a shock absorber. In comparison with conventional symmetrical catamarans or deep-V offshore monohulls, pitch, heave, and vertical accelerations are reduced by 50% at the centre of gravity and fur­ther aft, thus no slamming is experienced even in high speeds travelling in rough seas.

The efficiency advantage is that at planing speeds (typically from 12 knots) a drop in resistance of up to 30% in comparison with conventional symmetrical catamarans and offshore deep-v craft is possible, which equates to higher speeds as well as significantly lower powering requirements. Lower power normally results in a 30% reduction in fuel consumption at planing speeds.

These benefits extend to maneuverability as well. As the hull is partially lifted out of the water by the foil system, when changing course, its lateral area is reduced, allowing tight turning circles as well as leaning into turns like monohulls, unlike symmetrical catamarans which have some peculiar handling characteristics. Tight turns can be performed in waves without any form of instability.

At rest while stationary or fishing in the open ocean in swell, the hydrofoils dampen and counter the motion of the hull and do not require any further dampening devices like flooding keels for ballast or costly stabilising gyroscopes as most offshore deep-v monohulls might.

In steep following and quartering seas, hydrofoil-supported catamarans have a unique bow design producing greater dynamic lift and eliminating the tendency to weave, broach and barrel roll/capsize compared with conventional powercats in these conditions. If travelling faster than the swell in a hydrofoil-supported catamaran, the vessel tends to become airborne more easily due to the higher speed they carry, but the re-entry is smooth and drama free as the hydrofoils help disperse impact.

Whilst the foil is operating in the submerged mode for which it is designed, the lifting force is practically constant at cruising speed, irrespective of depth below the surface.  Therefore when the vessel encounters a wave, the constant lifting force ensures that the hull remains in the same vertical position, and the influence of the wave forces on the hull is significantly less than what it would be without a foil. The foil acts as a vertical damper, reducing vertical accelerations, which ensures enhanced seakeeping and a more comfortable ride for passengers and crew. 

hydrofoil supported catamarans

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CFD Analysis of Interference Factor in Hydrofoil-Supported Catamarans (HYSUCAT)

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hydrofoil supported catamarans

Catamaran, with its distinctive dual-hull design, offers unique advantages in maritime applications, including improved stability and space utilization over traditional monohull vessels. However, the interaction between the two hulls generates complex hydrodynamic phenomena, significantly influencing the vessel's overall performance. One critical aspect of this interaction is the interference factor, which affects the hydrodynamic resistance encountered by the vessel. The purpose of this paper is to investigate the changes in hydrodynamic characteristics that occur when hydrofoils are incorporated into typical catamaran hull forms. This is accomplished through the utilization of advanced Computing Fluid Dynamics (CFD) simulations. In this study, a Delft-372 catamaran with a concept design is modified by installing a foil system with a high Reynolds number in order to reduce its overall resistance. The new system is then analyzed in order to determine the impact that it has on interference factors. For the purpose of achieving a comprehensive understanding of hydrodynamic behavior, the simulations are carried out under a variety of operating conditions, which include a variety of speeds. Simulations result indicate that the interference factor consistently increases drag for hydrofoil-supported catamarans to more than double that of monohulls across all speeds, particularly when hydrofoil-induced flow disturbances adversely affect the hull's boundary layer, leading to reduced efficiency.

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  • A. Firdhaus and I. K. Suastika, "Experimental and Numerical Study of Effects of the Application of Hydrofoil on Catamaran Ship Resistance," in The International Conference on Marine Technology (SENTA), Scitepress, 2022, pp. 104–110
  • K. Suastika, G. E. Nadapdap, M. H. N. Aliffrananda, Y. A. Hermawan, I. K. A. P. Utama, and W. D. Aryawan, "Resistance Analysis of a Hydrofoil Supported Watercraft (Hysuwac): A Case Study," CFD Letters, vol. 14, no. 1, pp. 87–98, 2022
  • J.-B. R. G. Souppez, "Hydrofoil Configurations For Sailing Superyachts: Hydrodynamics, Stability And Performance," Design & Construction of Super and Mega Yachts 2019, 2019
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  • X. Wang, L. Liu, Z. Zhang, and D. Feng, "Numerical study of the stern flap effect on catamaran' seakeeping characteristic in regular head waves," Ocean Engineering, vol. 206, p. 107172, 2020
  • N. Kumari and A. Chakraborty, "A Numerical Study of Flow Around Different Hydrofoil Systems In Presence of the Free Surface," in ASME 2021 Gas Turbine India Conference, American Society of Mechanical Engineers, 2021
  • T. Castiglione, W. He, F. Stern, and S. Bova, "URANS simulations of catamaran interference in shallow water," Journal of Marine Science and Technology, vol. 19, no. 1, pp. 33–51, 2014. doi: 10.1007/s00773-013-0230-5
  • W. He, T. Castiglione, M. Kandasamy, and F. Stern, "Numerical analysis of the interference effects on resistance, sinkage and trim of a fast catamaran," Journal of Marine Science and Technology, vol. 20, no. 2, pp. 292–308, 2015
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  • A. Firdhaus, Kiryanto, M. L. Hakim, G. Rindo, and M. Iqbal, "Ship Performances CFD Analysis of Hydrofoil-Supported High-Speed Catamaran Hull Form," Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, vol. 113, no. 1, pp. 108–121, 2024
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  • A. Frère, K. Hillewaert, P. Chatelain, and G. Winckelmans, "High Reynolds Number Airfoil: From Wall-Resolved to Wall-Modeled LES," Flow, Turbulence and Combustion, vol. 101, no. 2, pp. 457–476, 2018
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Hydrofoil Supported Catamaran designs

Discussion in ' Boat Design ' started by malan conradie , Feb 3, 2008 .

malan conradie

malan conradie Designer hydrofoil boats

I am the designer and manufacturer of a range of Hydrofoil Supported Catamaran (HYSUCAT) boats in colaboration with Professor Gunter Hoppe and the University of Stellenbosch, South Africa. We have been developing and producing these boats since 1997 with unbelievable results. Most models are capable of 50+ knots with small engins and up to 40% more efficient than conventional craft. The models consist of the following. 1. Hysucat 42' flybridge and sport cruiser (twin 420hp - 11.5ton -50 knots) 2. Hysucat 36' sport cruiser,Fishing,fast patrole(option inboard / outboard) 3. Hysucat 25' centre console, sport cruiser.(twin 90-140hp - 52 knots) 4. Hysucat 24' centre console, sport fisher.( twin 70 - 115hp - 48 knots) 5. Hysucat 26' Rib leisure/racing. (twin 70-150hp single 115-250hp -72 knots) 6. Hysucat 21' Rib standard/leisure.(twin 50-70hp single 90-140 -55knots 7 Trident 17' Rib standard/leisure (twin 30-50hp single 70-115hp-45k I would like to sell the designs and high quality molds for someone to take these developments to the next level. Exporting power boats from South Africa is expensive and often not viable. See some of the products on www.stealth-design.com  

Kay9

Kay9 1600T Master

Nice boats. K9  

royalray

royalray Junior Member

interested (right timing) asap reply to [email protected]  
Thank you for the reply - contact me if you need more detailed information!  

rwatson

rwatson Senior Member

Puzzled - I didnt see much sign of "Hydrofoil support" at that web site. Can you elucidate on the term a bit please?  
Hydrofoil Supported Catamaran design please click design on the web site www.stealth-design.com for more design detail. You could also visit www.hydrofoildesign.com from Professor Hoppe  

SamM1234

SamM1234 Junior Member

I see that a couple of sites talk about increased efficiency at speeds of over 30 knots. But, are these vessels less efficient at slow speeds, because of the foil drag? Or, are there any other known drawbacks of this technology, which could have made other manufacturers/designers not adopt this technology so far?  
There is very little foil drag and the foil will rather assist to get the vessel on the Plane(foil) without lifting the bow. These vessels will get up on the foil between 12 to 17 knots pending on the weight. Once the vessel is on the foil you could reduce the power as the vessel will now fly on the foils with less drag and more efficient. If the vessel runs with surface props it will be more efficient above 30 knots. There is no drawbacks with the HYSUCAT system except that the smaller craft (17'-21') is more sencitive to trim in flat water. I believe that the reson for resistance is that there are bad copy products around as well as some retrofit foils on cat hulls that are not suitable. The best performance is alway the hull and hydrofoil combination design. See the picture of a 11.5 ton 13 meter vessel running at 50 knots. Note how high the craft lift out the water.  

Attached Files:

Hysucat-420a-.jpg.

Sure looks impressive. What range of sea conditions is it possible to fly on the foil? In other words, does it have to slow down to displacement speed above a certain wave hegiht, or is this limitation the same as for a non foil assisted cat?  
The smaller light models ( 17' to 26') models do not have a limit as these models go airborn and when they re entre the water the foil will create lift forces acting like a shock absorber. It is best to run a slight angle into big sea conditions to prevent foil slapping when the craft hit the crest of the next wave directly on the foil. The faster the craft run in chop conditions up to 9-11' the softer the ride providing the engin trim is correct. As for the heavy models with inboard motors it is best to cruise at 22 to 25 knots running directly into a big sea condition with strong wind to prevent going airborn. Running with a big following sea it is easy to run at the wave speed of 30+ knots. It is always best to maintain on the hydrofoil even in the biggest sea condition to use the advantages that the foil system provide. See the pictures of some boats at high speed.  

hysucat-650a.jpg

Hysucat250k.jpg, hysucat520b.jpg.

Gannet

Gannet Junior Member

Very interesting thread and I agree nice boats. I was wondering if there was any effect to maneuverability. Also, I was envisioning these hydrofoils between the floats on a floatplane. What are your thoughts on this type of application?  
The foils will improve maneuverability on catamarans and also allow the craft to bank into corners unlike most catamarans. There is no negative behavior with foils except that the craft is more sencitive to trim in flat water conditions. The foils will work verywell between the floats of a seaplane providing that the ratio is correct. If the foils are to long it might create some initial drag at the low speed range. Once seaplane gets up on the foils around 15 - 18 knots pending on the weight, the resistance is very small and it should improve take of distance and possibly less power to break the water friction. No expert on seaplanes, just an observation nowing the foil behavior.  

sail4evr

sail4evr Junior Member

I would be very interested in a sport 210 design on a 12.5 - 13ft LOA. Do you have aything like that or is there a trim issue in such a small boat?  
Unfortunately the smallest model in the range is a 17' model. Small catamarans of 12.5 to 13' is not a good idea as there is normaly a boyancy problem and they tend to suck to the water. We are making use of a unique tri-hull design to compensate for the boyancy problem as well as the turning capabilities. The tri hull models could also be fitted with the foil system to improve performance. It would be possible to develop a small tender type boat for yachts that could be driven with a single outboard or jet type drive. Please contact me for more information as i believe that there is a big market for a this type of craft.  
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I agree, I think there is a market if the price is right. Well I am very interested, but this site will not let me email you directly. You can contact me at [email protected]  

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hydrofoil supported catamarans

The Unique Burial of a Child of Early Scythian Time at the Cemetery of Saryg-Bulun (Tuva)

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Pages:  379-406

In 1988, the Tuvan Archaeological Expedition (led by M. E. Kilunovskaya and V. A. Semenov) discovered a unique burial of the early Iron Age at Saryg-Bulun in Central Tuva. There are two burial mounds of the Aldy-Bel culture dated by 7th century BC. Within the barrows, which adjoined one another, forming a figure-of-eight, there were discovered 7 burials, from which a representative collection of artifacts was recovered. Burial 5 was the most unique, it was found in a coffin made of a larch trunk, with a tightly closed lid. Due to the preservative properties of larch and lack of air access, the coffin contained a well-preserved mummy of a child with an accompanying set of grave goods. The interred individual retained the skin on his face and had a leather headdress painted with red pigment and a coat, sewn from jerboa fur. The coat was belted with a leather belt with bronze ornaments and buckles. Besides that, a leather quiver with arrows with the shafts decorated with painted ornaments, fully preserved battle pick and a bow were buried in the coffin. Unexpectedly, the full-genomic analysis, showed that the individual was female. This fact opens a new aspect in the study of the social history of the Scythian society and perhaps brings us back to the myth of the Amazons, discussed by Herodotus. Of course, this discovery is unique in its preservation for the Scythian culture of Tuva and requires careful study and conservation.

Keywords: Tuva, Early Iron Age, early Scythian period, Aldy-Bel culture, barrow, burial in the coffin, mummy, full genome sequencing, aDNA

Information about authors: Marina Kilunovskaya (Saint Petersburg, Russian Federation). Candidate of Historical Sciences. Institute for the History of Material Culture of the Russian Academy of Sciences. Dvortsovaya Emb., 18, Saint Petersburg, 191186, Russian Federation E-mail: [email protected] Vladimir Semenov (Saint Petersburg, Russian Federation). Candidate of Historical Sciences. Institute for the History of Material Culture of the Russian Academy of Sciences. Dvortsovaya Emb., 18, Saint Petersburg, 191186, Russian Federation E-mail: [email protected] Varvara Busova  (Moscow, Russian Federation).  (Saint Petersburg, Russian Federation). Institute for the History of Material Culture of the Russian Academy of Sciences.  Dvortsovaya Emb., 18, Saint Petersburg, 191186, Russian Federation E-mail:  [email protected] Kharis Mustafin  (Moscow, Russian Federation). Candidate of Technical Sciences. Moscow Institute of Physics and Technology.  Institutsky Lane, 9, Dolgoprudny, 141701, Moscow Oblast, Russian Federation E-mail:  [email protected] Irina Alborova  (Moscow, Russian Federation). Candidate of Biological Sciences. Moscow Institute of Physics and Technology.  Institutsky Lane, 9, Dolgoprudny, 141701, Moscow Oblast, Russian Federation E-mail:  [email protected] Alina Matzvai  (Moscow, Russian Federation). Moscow Institute of Physics and Technology.  Institutsky Lane, 9, Dolgoprudny, 141701, Moscow Oblast, Russian Federation E-mail:  [email protected]

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1993 how the construction company remstroy was created   the year 1993 was a period when a lot of construction companies, which had been working successfully during the soviet times and had rich staff capacity, were forced to cease their activity for various reasons. a lot of capable specialists either had to look for another job or change their field. but there were also those who were willing to realise their potential in the field of construction in accordance with the received degree and the experience they had accumulated. thus, in 1993 in elektrostal (moscow oblast) a group of specialists and people sharing each other’s ideas, who had enormous educational background and the highest degree in architecture, organized and registered ooo firm erg which began its rapid development and successful work, offering its service both on the construction market and other areas. 2000 industrial construction is the main area   seven years of successful work have shown that combining different types of activities in the same company is not always convenient. and in the year 2000 the founders of ooo firm erg decided to create and register a monoprofile construction company ooo remstroy construction company. industrial construction was chosen as the priority area. it was in this area that the directors of ooo sk remstroy began their working life and grew as specialists. in order to achieve the set goal, they selected a mobile team of professionals in the field of industrial construction, which allows us to cope with the tasks assigned to ooo sk remstroy throughout russia and the near abroad. 2010 manufacturing of metal structures   we possess modern equipment that allows us to carry out the entire cycle of works on the manufacture of metal structures of any complexity without assistance. designing – production – installation of metal structures. a staff of professionals and well-coordinated interaction of the departments let us carry out the work as soon as possible and in accordance with all customer’s requirements.” extract from the list of members of self-regulatory organizations, construction.

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  1. PDF Recent Applications of Hydrofoil-Supported- Catamarans

    The hybrid consisting of a catamaran with fully asymmetrical demi-hulls and a single hydrofoil spanning the tunnel between the two demi-hulls was named Hydrofoil Supported Catamaran or Hysucat in short. A research project was started to investigate and optimize the Hysucat principle (it is still running after 20 years!), see Hoppe (1980-1980a).

  2. Home

    Icarus Marine has specialist expertise in the design of hydrofoil-supported catamarans (aka HYSUCAT). These vessels offer numerous performance benefits. Icarus Marine offers full turnkey solutions for such vessels, including the hydrodynamics, hydrofoil construction, Class approval of the hydrofoils and performance guarantees.

  3. Linx

    LINX TENDERS ARE HIGH-SPEED HYDROFOIL-SUPPORTED PLANING CATAMARANS. SHALLOW DRAFT CATAMARAN HULLS. LINX30 HIGHLIGHTS. Reproducir vídeo. Linx 30 Showcase. WITH BEACH-LANDING BOW DOOR OPTION. Linx30 360º VIEWER. TECHNICAL. LOA. 9.5 m. BOA. 3.1 m. Draft. 0.55 m Max Speed. 40 kts. Cruising Speed. 25 kts. Range. 180 nm at 24 kts. Lightship weight.

  4. [2023] Hydrofoil Catamaran: The Ultimate Guide to Foiling on Water

    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 ...

  5. Hydrofoil Supported Catamarans

    HYDROFOIL SUPPORTED CATAMARANS. 40m Catamaran Crew Boat 40m Crew Passenger Transfer Vessel for offshore crew / supply operations. read more. 30m Ambulance Boat 25.5m firefighting catamaran with telescopic fire monitors (FIFI 1 compliant) read more. 25m SAR Catamaran Search and Rescue Catamaran with firefighting capability developed for the ...

  6. Performance prediction of hydrofoil- supported catamarans using

    Hydrofoil supported catamaran (HYSUCAT) are regarded as interesting high speed crafts in marine industries. The prediction of hydrodynamic performance of these vessels is a key role to improve their design. Hydrodynamic performance of HYSUCAT is remarkably dependent on the type of hydrofoils that are embedded in their hull. In the present study ...

  7. Hysucat Design

    Malan Conradie - Hysucat Design. Leading international designer of Hydrofoil Supported Catamaran' since 1996. All design and developments having been done in collaboration with Professor G. Hoppe and the University of Stellenbosch. The hull and hydrofoil designs are designed and tested in the towing tank facilities at Stellenbosch University ...

  8. PDF high efficiency performance catamarans

    HYFOIL Marine designs hydrofoil-supported catamarans that ride on top of water with the hulls engaged enough to support a smooth ride upon interaction with waves -even in rough sea states. These ultra-contemporary boats are easy to manage and come with spacious layouts ready to be accessorized with an endless

  9. (PDF) Seakeeping Analysis of a Hydrofoil Supported ...

    Using hydrofoils between two hulls of catamarans, hydrofoil supported catamaran (HYSUCAT), is one of the best way to improve the hydrodynamic characteristics of this vessels. In the present study ...

  10. PDF HYDROFOIL SUPPORTED CATAMARAN

    04. hydrofoil supported catamarans have better passenger comfort 05. hydrofoil supported catamarans give better speed 06. hydrofoil supported catamarans have less fuel consumption 07. hydrofoil supported catamarans give more range 08. hydrofoil supported catamarans can operate in much rougher waters 09. hydrofoil supported catamarans allow a ...

  11. Hysucat

    http://www.hysucat.com/Hysucat, an acronym for Hydrofoil Supported Catamaran, is the combination of a distinctively designed hull and foil incorporating hydr...

  12. The Ultimate 35′ Offshore Power Catamaran

    The Insetta 35IFC was designed with a singular vision… to be the best-performing center console sport fishing catamaran in its class. Enjoy unmatched performance, range, and efficiency thanks to the 35IFC's hydrofoil-assisted design. In addition to being the best High-Performance Fishing Catamaran in its class, it also provides a smoother ...

  13. 40 Foil-Assisted Catamaran

    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.

  14. (PDF) Analysis and Optimation Hydrofoil Supported Catamaran (HYSUCAT

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