foiling a class catamaran

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.

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

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eXploder AD3 is A-Class sailing catamaran – one of the fastest singlehanded sailing boats on the water. The eXploder A-Class cats have been in production since 2013 and in that time won a staggering 6 World Championship titles and 15 Continental titles Since it’s conception the eXploder platform has been improved over and over again. The focus behind the current boat has been aerodynamics. Optimised hulls and foils / rudders / daggers are constantly being tested and improved.

OPTIMISED DAGGERBOARDS/RUDDERS OUTLINES AND PROFILES

Tweaked and tested foils are not only incredibly fast, but also easy to control. This is a race-winning combination. When a customer buys a new boat, it is always provided with the latest, fastest, tested foils / rudders / daggers.

FOCUS ON AERODYNAMICS

Hulls, beams, double-layered trampoline, hull-beam connections – all these parts are optimised for drag reduction. Together with D3 Applied Technologies we’ve ran countless tests and CFD simulations to try to understand where the biggest efficiency gain lies. This is not a hydro story anymore, it’s a flying object! Also the whole package is designed to be very clean and as visually appealing as possible.

EASY ANGLE TRIM

All the foil trimming systems are clean and easy to operate on any course, allowing on the fly trimming, including rudder differential in either displacement of foiling mode.

All boat elements are designed to be durable, failure-free and easy to operate and manufactured using the latest in material and technology

READY TO SAIL

The eXploder AD3 is provided with all needed systems and even trim markings making initial boat set-up intuitive. To go out on the water, everything what is needed is to put a mast on, insert foils / rudders in their slots, hoist a sail and attach a Cunningham and a mainsheet.

WORLD CHAMPIONSHIP PROVEN

In our business the only way to determine performance is through results. The eXploder AD3 has won 6 World and 15 Continental titles in the last 7 years.

DESIGNER / R&D TEAM COMMENT

“The AD3 2020 model is the result of over a decade of learning, testing, failing, succeeding at times, and overall, developing these boats. With the previous platform we made some compromises from a design perspective, enabling us to build test boats over the years with different board and beam locations. It has been a very successful platform, widely used by the majority of the class. However, in the last couple of years we have been considering changing the daggerboard cases, but in order to respect our philosophy, that would require a new platform. So last year we tested a few systems on the 2019 AD3 (carbon traveller car, rudder differential, etc), and prepared the grounds to design a new model in 2020.

You have limited opportunities to design a new platform, and in most projects, new ideas sometimes fade away in the design process as we face boatbuilding realities (materials, tooling, custom hardware, etc). On this model we were given plenty of freedom in terms of shapes and surfacing, and for once this was maintained until the end. The aero-package of an upwind-foiler is one of the main drivers of performance, and this boat is very clean in that aspect.

We took the opportunity to update the foils (Z42) and the rudder elevators. We not only changed the rondure and planform but also the family of foil sections following the most recent design tool developments. As of rudder lift control, we can sail now with a more extreme rudder differential. Righting moment is the horsepower of any boat, so this is a huge performance gain, particularly upwind.

The rest was our typical process of designing a racing boat: countless design iterations, CFD for aero and hydrodynamics, VPP iterations to update polars etc From a hydro point of view, this hull is designed as a foiler, so we ended up reducing the volume, rocker and freeboard of the hulls. Interestingly, we managed to reduce drag at lower speeds (2 hull downwind and non-foiling upwind).

The bar was set as high as it gets with it’s predecessor but we are 100% confident that the AD3 is another step towards the ultimate performance. “

Yachting World

• Digital Edition

Foiling and Hydrofoiling: Everything you need to know

A foiling International Moth dinghy. Photo: Christopher Ison / Alamy

What is foiling?

Although foiling or hydrofoiling feels like a recent revolution to take the world of watersports by storm, it is actually much older than many appreciate.

In terms of motorised waterborne craft, the first foiler was a motorboat designed and built by Italian inventor Enrico Forlanini in 1906.

It did, however, take quite a bit of time before foiling boats with sails took to the water, but even then many people might be surprised to learn that even in the 1970’s the foiling trimaran, Williwaw, covered over 20,000 sea miles in and around the South Pacific all on its foils.

It turns out the history of hyrofoiling goes back further than many think.

It was not until the early-2000s that foiling really started to take hold, with a  development dinghy class, the International Moth, leading the way.

Foiling boats

With huge amounts of interest in the 11ft Moth dinghy, foiling began to spread throughout the sport of sailing. And it was not long until hydrofoiling boats of all different shapes and sizes were taking the water.

Over time, some traditional classes converted to foiling – the A-Class and C-Class catamarans being examples. But more new boats were also designed specifically with hydrofoiling in mind.

In 2013 Emirates Team New Zealand built their 72ft America’s Cup catamaran to be a foiler, forcing their competition for the Cup, Oracle Team USA to convert their AC72 into a foiler to stay competitive – ultimately Oracle Team USA won the Cup in one of the biggest sporting comebacks of all time .

To date the America’s Cup has not looked back with the competition taking place in smaller hydrofoiling AC50 catamarans in 2017 and the newly conceived monohull foilers, the AC75 s, in 2021.

In 2021 the Olympics Games introduced the first ever foiling catamaran in the Nacra 17.

Foiling yachts

Offhsore, 90ft Ultime multihulls on their foils are competing to be the fastest to race around the globe and design houses across the globe are racing to create foiling yachts for the masses which could dramatically reduce cruising times from one destination to the other.

There are also many classes of yacht that are taking some of the lessons from fully foiling craft and putting them to use in a semi-foiling manner.

Here the biggest technical innovation is in the IMOCA60 class, which is famously used for the single handed non-stop round the world race, the Vendée Globe .

The latest couple of generations of IMOCA 60s have been build with huge, technologically complex foils to generate lift. These are powerful enough to lif the boats fully out of the water, but as yet the class rules do not allow for rudder foils which would stabilise flight and allow for full foiling.

Where sailing boats and yachts have, arguably led the way in the history of foiling over the past decade or so this has filtered down into a plethora of other watersports craft.

Although in the early days foiling was typically the preserve of elite sailors and watersports professionals, increasingly we have seen boats and boards designed to foil in the hands of the average sailor, surfer or windsurfer.

This race to bring the fun of foiling to beginners is continuing apace with beginner foiling boats, windsurfers, surfers etc. coming to the market every year.

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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 >>>.

The ‘A’ Class Catamaran – Its place at the top table.

At 18ft long with a total allowed rig area of 150ft2, but weighing in at a mere 75kg, the ‘A’ Class is very much a Formula One car in catamaran form and in the last few years, developments have seen this class take off more than ever before, quite literally.

Anyone with an interest in the hi-tech aspects of sailing will probably know something of the ‘A’ Cat.  They are spread worldwide with large fleets in Australia, USA/Canada, throughout Europe and there is even a growing fleet emerging in Argentina.  They have had some 55+ years of open design resulting in them now being amongst the most highly developed small sailing boat classes on the planet.

Some History.

Originating from a desire in the late 1950’s by the IYRU (Later renamed ISAF and now World Sailing), to encourage racing and design development of catamarans. They proposed four classes with simple size criteria based on length, beam and sail area, and crucially, with minimal design rules.   The A-Class logo was chosen by the IYRU when their committee decided in 1956 to classify the catamarans into those 4 categories. A, B, C and D as construction classes. To symbolize the two hulls the letter "A" had a double underlign, same  as the B's,  the C's and the D's. From the beginning the A-Cats had the double underligned letter "A" on the sails and it was used on the letter heads. (Examples were the A-Lion, Australis, Unicorn, Quest A, Catalina, Rhapsody a.s.o.).  The ‘A’ class is by far the largest remnant of the four classes.  The ‘B’ class was a 20ft twin hander with 235ft2 of sail and developed into the Tornado and a few offshoots such as the F18.  The ‘C’ class was another twin, but at 25ft with a 300ft2 rig, has become a super sophisticated monster and the pinnacle of small cat design that races for the Little America’s Cup.  The ‘D’ Class was 32ft and a sail of 500ft2 with three crew, but rapidly dwindled away. 

Various designs for the ‘A’ bubbled away until the IYRU held trials to seek out the best designs in the ‘A’ and ‘B’ classes and to award them international status.  At the Catamaran Club on the Isle of Sheppey in 1967, the Tornado won the ‘B’ class, and in the ‘A’ class category the British Unicorn competed, along with with several other boats, against Graham Johnston’s Australian Australis design.  At that time the spec was simply to be a single-handed cat with sliding seat or trapeze restricted only by length, beam and sail area.  The Australis design won and gained international class status.  However, the Unicorn design still gained popularity in the UK and Europe. It eventually became a strict one-design class with rules on hulls, weight and mast diameter, which accounts for the vastly different sail shapes now seen on the two boat designs.  Today the Unicorn still measures and is still accepted as an ‘A’ Class cat.

So, the free reign given within the ‘A’s development class spec allowed several other designs to arrive, each an attempt to improve on the other.  All modern designs can trace their evolution back to these early boats in one way or another.  Many home built designs turned up, and home building of ‘A’ Cats continues today, particularly in the USA, where home building tends to be more popular.

As building and materials technology improved, the stitch and glue plywood built and the glass fibre built boats, in order to save weight and get down to the absolute minimum, needed to be made with the strength only in certain high load areas – shroud plates, beam mounts, foil cases etc., This resulted in the class getting a bit of a reputation for being fast but rather delicate.  Gradually these materials gave way to the carbon foam and carbon nomex sandwich construction.

Fast Hull Shapes

The Australis hulls were pointed at both ends similar to a canoe, in an attempt to produce a drag-reducing hull.  The designs were often determined by the materials available and nowadays space age construction techniques are possibly one reason that the modern boat is now becoming increasingly popular, as it is producing immensely stiff and strong yet light boats, capable of withstanding hard racing for several years. 

Currently, the modern ‘A’ cat bears a striking resemblance to its rather higher profile cousin, the AC45 .  The distinctive Dreadnought shaped bows of the  ‘wave-piercing’ hull design reduces the pitching moment when in waves.  The hull is essentially upside down when compared to many boat hulls.  The widest part is towards the bottom with the result that the hull won’t sink as far before the buoyancy starts to push it up again so floats higher. They also tend to have the beams bonded in making it a very stiff one-piece unit.  Hull sections and profiles continue to change.  The requirements of a boat designed to foil mean that the underwater hull shapes are starting to be optimized for lighter wind sailing, as the hull should be out of the water when it is going fast in a higher wind. 

On the latest 2016 boats, aerodynamic drag is now recognized as increasingly more important as the airflow over the boat, with the added apparent wind, can sometimes be as high as 30 or 40 knots.  Beams are now aerodynamically streamlined, smoothing the airflow over the drumskin tight trampoline.  Double skin trampolines are also a new design feature.  Previously the underside of the tramp was a mass of ropes, chords and bungees.  Now these are sandwiched between two airtight skins.  On one new design, the Holland Composites DNA, even the tiller bar is now streamlined to match the rear beams curved profile!

There are several elements key to the ‘A’ cats speed and success.  Over the last 15 years much work has been done on the design of foils (rudders and daggerboards).  Initially the foils were all straight as the technology to make them anything else, without risking failure, was simply not available.  However, they could be put in at an angle and canted towards the centerline.  This seemed to give a little lift to the boat, thus making it faster by reducing the drag of the hull when the boat was heeled and flying a hull. They were also made slimmer and longer, and this higher aspect ratio vastly improved the drag effects over a broader chord foil.  Then in 2005, Dutch composites expert and sailor, Pieterjan Dwarshuis, raced in the Worlds with a C shaped foil. This supplied much more lift and helped in getting the windward hull flying when going downwind – doing ‘the Wild Thing’ as it is known in cat circles.  And, as the leeward foil curved under the boat more, it produced much more lift as the angle of attack (Rake) could be adjusted also.  Result – particularly when combined with small winglets on the rudders was that the boats went faster. Within a couple of years these foils became more commonplace and by 2008 German sailor, Bob Baier, had won the European championships using a set. 

However, some feared that complex hydrofoils could possibly be fitted to the boat, rendering it fast but impractical and expensive.  So in 2009 a rule was brought in with the intention of preventing this hydrofoiling from happening.  The now famous ‘A’ class ‘Rule 8’ stating that all foils must be inserted from the top of the hull, and that there must be a minimum distance between the tips of the bottom of the boards of 75cm from the centreline.  That seemed to do the trick and for a few years things went along nicely.  But the foil building technology steadily improved and a consistent way was found of producing extremely strong shaped daggerboards from carbon composites. In 2013 the foils had developed from a C shape into a J shape and as a result of redesigned rudder winglets, positioning them at the bottom of the blade, the boats started leaping about like salmon. So the next logical move for this development class boat was obvious and was to make it fly. The boat has about the same power to weight ratio as a foiling Moth so it was assumed that it should be able to fly, but for one crucial potential problem – Rule 8.  This meant that conventional L shaped boards, similar to the AC boats foils, are not class legal.  But thinking around corners is what designers and sailors like to do and before long, designs for foils emerged that complied with the top insertion, limited span restrictions and provided enough lift to get the boat clear out of the water. A movable rake system allowed the angle of attack of the boards to be varied combined with fore and aft movements of the crew weight.  The real turning point came in 2014 before the Worlds in New Zealand. 

Many of the America’s Cup crews are also ‘A’ cat sailors.  In fact the most successful ‘A’ Class World Champion is the ETNZ skipper Glenn Ashby.  

The ETNZ America’s Cup team took delivery of half a dozen ‘A’ cats and set about with gusto seeing how far they could be pushed.  Improved, redesigned and strengthened boards and rudders started flying around the world on express carriers as they broke and re-broke the foils in an attempt to push the boat to it’s limits.  It worked and the boats started to fly, albeit in the hands of these sailing superstars, but techniques were discovered for getting the boats foiling for longer each time.   As a result of this, Glenn Ashby won yet another world title.  This paved the way for the current developments. 

Optimized designs, where daggerboard positions and beams are moved slightly, and newer, more stable foil sections that have lower drag are now arriving, with a Z and J/Z shaped board proving more stable when combined with T or L shaped rudder tips.  However, the holy grail of upwind foiling is still being worked on.  And this is all still done within the restrictions of Rule 8.  The top insert only rule has prevented earlier, more stable, and probably easier foiling to happen if an L shaped main foil were to be fitted.  However, the very fact that it is less stable probably results in a faster boat and the need to raise windward foil, as would be the case of the higher drag L foil, is unnecessary and something a single-handed sailor’s workload can do without.

Fast Rigs .

The ‘A’ class rules allow you to do anything as long as the total area, including the mast, does not exceed 150ft2.  This area has traditionally seen the greatest developments in the past.  Shape is entirely up to the sail maker based on mast shape and flexibility.  The original masts were flexible tapered affairs as still seen on the Unicorn today.  But in the early 1980s the ‘A’ class moved more towards an untapered wing type mast which was able to be rotated, somewhat like the leading edge slat on an aircraft wing, and thus create the sail shape more efficiently and to adjust it to cope with the windspeed changes created by the apparent wind.   Techniques developed and composite masts began to appear in Europe about 25 years ago.  The sails design paralleled the mast designs. 

Initially they were fully battened but conventionally tapered towards the head.   Then, in the mid 1980s the ‘Fat Head’ sail appeared on the ‘A’ cat for the first time.  This lower drag high-aspect ratio rig, much like a glider wing, allowed and helped the boat to fly a hull much earlier downwind with the resultant reduction in drag.  Upwind, powerful 12:1 downhaul and 9:1 mainsheet systems could flatten the sail and when the carbon mast arrived, this was even more efficiently achieved.  As the sail area is the determining factor, not the shape, variations were tried at various times.  Really ‘Fathead’ sails, with the heads at over 1000mm were the thing for a while.  These required the leech to be cut away in a concave manner to conform the area rule, but now the more popular ‘800’ head offers a good compromise of power and heeling moment. Rigid wing type rigs were also seen occasionally.  Back in 1978, at the European championships, a wing sail proved unbeatable in light winds.  More recently designers, such as the US mast maker and ‘A’ cat ace Ben Hall, have experimented with a wing sails.  But, their practical handling off the water still proving troublesome.

The most current sail development is the ‘Decksweeper’ sail.  This is a sail that uses the trampoline as the end plate, making it more efficient, similar to winglets seen on airliners.  The sail has its centre of effort lower down, and thus reduces the heeling force created by the fatter head sail and is ideal for a foiling design.  The byproduct of this is that going upwind, where any heeling force, above just flying a hull, is not wanted with either foil design, is that it feels like you have another gear.  Now much more of the power is pushing you forward.  And this is usually sufficient to compensate for the higher drag created by the more complex shaped foils with their higher surface area.  So, faster uphill, faster downhill, what’s not to like?  However, the downside is that when it’s not foiling conditions, the decksweeper is less powerful and thus the C board, or ‘Classic’ boat is still king.

The decksweeper was first tried on the ‘A’ cat in 1987 in Australia but proved to be unbeneficial compared with more conventional designs.  It was tried again a few years ago, by former World Champion Mischa Heemskerk, who was interested in exploring it again on a more modern boat design.  The trials were inconclusive and the project was shelved for a while.  Then 2015, in the search for more power but with less sideways pressure, as required by a foiling boat’s need to be sailed flatter, he reappeared with one at the 2015 Dutch Nationals and wiped the floor with everyone, including Glenn Ashby, who was there getting ready for the Worlds a few weeks later.  But you can’t keep that friendly little Aussie down for long.  When he arrived at the Worlds, he’d simply chopped one of his older sails down along the leech, and sewn an extra bit onto the bottom to reach the tramp.  This was enough to get him back on track speedwise, and in a variety of conditions, he managed to beat Heemskerk by an increasing margin each race to retail his World title.

Much design work was done over the winter of 2015/16 and two of the major manufacturers both produced more optimized designs.  The Polish Exploder came out with their Ad3, with a design input from the Spanish based D3 Applied Technologies design team.  The other was the Holland Composites DNA F1 design.  A radical looking boat with advanced aerodynamic features and a fully carbon fabric stiff trampoline.  Both designs have proved to be game changers and with little to choose from as regards performance.  Misch Heemskerk won the 2016 Worlds on the F1 with Darren Bundock 2nd on the Ad3.   Both designs foil earlier and are more stable when doing so making them easier to control.  It would appear that the design curve is starting to flatten out again now as regards hull and foil design with these two boats setting the standard of performance. 

The ‘A’ Class Future

The two foil types are causing a little debate within the class though.  Although all the boats measure as ‘A’ Class cats equally, the foiling/floating thing appears to irk some in a few national class associations.  Some want separate races for foilers, claiming that is not fair now to race both on the same course.  A movement to start a ‘Classic’ class of non-foiling boats has been suggested.  But, most associations simply prefer to split out the results and run a parallel results system.  And, at those lighter wind events, or in areas like Southern Germany, you don’t hear many complaints. 

New foiling boats arrive and older second hand straight or C board boats find ready new homes with some being converted to a foiling configuration with new foil cases and rudders, whilst others are sold to the encouraging number of new sailors entering the class.  This is often the best place to start, as it’s not actually a hard boat to sail initially. (The class has a minimum of 5kts and max. limit of 22 kts of wind for racing)  Beautifully fast and responsive yet without many of the unpleasant characteristics that some other cats will catch you out on, e.g. the long bows tend to reduce pitchpoling. The added benefit of being 75kg makes it really easy boat to handle ashore; a true single hander, the only thing where you might need someone else’s help for 2 minutes is with stepping the mast.

The next jump looks like it will be in rig design.  It’s open design rules means that it will continue to see innovation and development within its rules as yet more ways are found to make them go even faster. Their ability to be altered, modified and improved will also continue to see the ‘A’ cat being used as a test vehicle for design ideas on larger boats.  Who knows what is around the corner designwise, but the ‘A’ cat should be able to meet the challenge.

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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!

• Hydrofoil History
• Advanced Hydrofoiling Techniques
• Hydrofoil Equipment Reviews
• Why do boats not use hydrofoils?
• iFLY15 – iFLY Razzor Pro – Foiling Catamaran
• Hydrofoil Catamarans on Amazon
• Hydrofoil Catamarans on Walmart
• Hydrofoil Catamarans on Etsy

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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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A Class Catamaran Tuning Guide

The settings below are recommended for Fiberfoam 14 / DNA masts and 80 kg skipper. Download PDF

Lighter skipper will slide settings up the range one and heavier skipper will stay down range one setting for best performance. (70kg is light. 90kg is heavy) Mainsheet should be tensioned enough to have an even twist profile from top to bottom and all tell tails should fly evenly.

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What is a Foiling Catamaran? (All You Need To Know)

Have you ever seen a boat literally fly over the water? With a foiling catamaran, that’s exactly what you get.

Foiling catamarans are the latest innovation in sailing technology, making them more efficient, agile, and environmentally-friendly.

In this article, we’ll look at what foiling catamarans are, the benefits they offer, the different types available, their applications, maintenance and care tips, cost, and where you can find them.

So, let’s dive in and learn all about foiling catamarans!

Table of Contents

Short Answer

A foiling catamaran is a type of boat that uses hydrofoils to lift the hulls out of the water, allowing it to sail faster and smoother than a traditional catamaran.

The hydrofoils, which are mounted on the underside of the boat, help to reduce drag and increase lift, allowing it to reach speeds of up to 40 knots (75 km/h).

Foiling catamarans are typically used in sailing races and can be seen in events such as the America’s Cup and the Olympics.

What are Foiling Catamarans?

Foiling catamarans are a type of sailboat that use hydrofoils to lift the hull out of the water at high speeds, allowing for increased speed and maneuverability.

This is achieved by the hydrofoils, which are located on the bottom of the boat and act as wings to create lift and reduce drag.

This type of sailboat has become increasingly popular in competitive sailing, as it is faster and more efficient than traditional sailing vessels.

Additionally, foiling catamarans are used for recreational sailing, making them a great choice for sailors of all levels.

Foiling catamarans are typically constructed from lightweight materials such as carbon fiber or Kevlar, allowing them to be faster and more agile than their heavier counterparts.

They are also equipped with specialized hydrofoils, which are designed to optimize the lift and reduce drag, resulting in faster speeds and better maneuverability.

These hydrofoils are usually adjustable, allowing for further optimization of the boats performance.

Foiling catamarans are typically larger than traditional sailboats, and can be up to 50 feet in length.

They are also typically equipped with multiple sails, allowing for greater control over the boat’s speed and direction.

In addition to their superior performance, foiling catamarans are also more stable than traditional sailboats, making them a great choice for recreational sailing.

Overall, foiling catamarans offer a great combination of speed, maneuverability, and stability, making them a great choice for both competitive and recreational sailing.

Whether youre looking for a competitive edge or just a fun day out on the water, foiling catamarans are sure to provide an enjoyable and thrilling experience.

Benefits of Foiling Catamarans

Foiling catamarans offer many benefits for sailors of all levels.

For competitive sailors, these boats offer superior speed and performance, allowing them to cruise at higher speeds, and with greater maneuverability.

This makes them ideal for racing and other competitive events, where speed and agility are essential.

For recreational sailors, foiling catamarans offer an enjoyable experience that is both safe and exciting.

These boats are designed to be lightweight and stable, making them easy to maneuver and handle.

Additionally, their design allows them to be sailed in a variety of conditions, from light winds to heavy seas.

Lastly, foiling catamarans are environmentally friendly.

As they use hydrofoils to lift the hull out of the water, they reduce drag and produce less wake than traditional vessels.

This means that they have a lower environmental impact, as they use less energy and produce fewer emissions.

Overall, foiling catamarans offer something for everyone.

Whether you are a competitive sailor looking for a fast and agile vessel, or a recreational sailor looking for a safe and enjoyable experience, foiling catamarans provide a great option for all types of sailors.

Types of Foiling Catamarans

Foiling catamarans come in a variety of shapes and sizes.

In general, they are characterized by their use of hydrofoils to lift the hull out of the water at high speeds.

The most popular type of foiling catamaran is the Moth, which has a single central hull and two foils on the bottom.

This type of catamaran is well-suited for competitive sailing, due to its superior speed and maneuverability.

Other types of foiling catamarans include the Nacra 17, the A-Class, and the Formula 18.

The Nacra 17 is a two-person performance catamaran, while the A-Class and Formula 18 are both one-person boats.

All three of these catamarans use hydrofoils to lift the hull out of the water, and are popular in competitive sailing.

For recreational sailing, foiling catamarans come in a variety of shapes and sizes.

Many of these boats are designed for one or two people, and some are even designed for larger groups.

Foiling catamarans are often used for daysailing, racing, cruising, and leisure sailing.

Some of the most popular recreational foiling catamarans include the Hobie 16, the Hobie Mirage, and the Hobie T2.

All of these boats use hydrofoils to lift the hull out of the water, allowing them to sail faster and more efficiently.

Foiling catamarans are also becoming increasingly popular in the world of yacht racing.

These boats are able to reach incredibly high speeds, making them ideal for competitive sailing.

Many yacht racing teams are now using foiling catamarans, such as the America’s Cup teams.

The America’s Cup is the world’s oldest and most prestigious sailing event, and it has now been dominated by foiling catamarans for the past several years.

In conclusion, foiling catamarans come in a variety of shapes and sizes, and are used for a variety of sailing activities.

They are becoming increasingly popular in competitive sailing, due to their superior speed and maneuverability.

Additionally, they are often used for recreational sailing and are enjoyed by sailors of all levels.

Applications of Foiling Catamarans

Foiling catamarans have become incredibly popular in competitive sailing, thanks to their superior speed and maneuverability.

The use of hydrofoils to lift the hull out of the water at high speeds reduces drag and allows the boat to sail faster and more efficiently.

This has made them a favorite among professional sailors, who have used them to set speed records in the Americas Cup and other international sailing events.

In addition to competitive sailing, foiling catamarans are also becoming increasingly popular for recreational use.

They offer a unique sailing experience, allowing even novice sailors to experience the thrill of high-speed sailing.

The hydrofoils also increase stability and make it easier for the boat to turn on a dime.

This makes them a great choice for sailors who want to explore new areas or practice different sailing maneuvers.

The versatility of foiling catamarans also makes them a good choice for sailing clubs that host events for all levels of sailors.

They can be used by beginners to learn the basics of sailing and by more experienced sailors to practice more complex maneuvers.

Additionally, they can be used for a wide range of activities, such as racing, cruising, and even fishing.

Foiling catamarans are also becoming popular among those who want to use them for longer voyages.

The hydrofoils help to reduce drag and increase fuel efficiency, making them a great option for those who want to travel long distances without having to worry about fuel costs.

Overall, foiling catamarans are an incredibly versatile and enjoyable type of sailboat that can be used for a variety of applications.

Whether youre a competitive sailor looking for a competitive edge or a recreational sailor who just wants to have some fun on the water, foiling catamarans are a great choice.

Maintenance and Care of Foiling Catamarans

When it comes to maintaining and caring for a foiling catamaran, there are a few key points to keep in mind.

First, the foils must be inspected regularly for any damage or wear and tear.

This can be done by inspecting them visually or using a borescope to check for any signs of damage or wear.

Additionally, the foils should be cleaned regularly to ensure they are free from dirt, debris, and algae.

This will help maintain optimal performance and reduce the risk of damage or wear.

When it comes to the hulls of the boat, they should also be inspected regularly for any signs of damage or wear.

This can be done by checking the hulls for cracks, dents, and other signs of damage.

Additionally, the hulls should be cleaned regularly to ensure they are free from dirt, debris, and algae.

This will help maintain the performance of the boat and reduce the risk of damage or wear.

Finally, the rigging and sails of the boat should also be inspected regularly for any signs of damage or wear.

This can be done by checking the sails for tears and other signs of damage and by inspecting the rigging for wear and tear.

Additionally, the rigging should be checked periodically to ensure it is properly tensioned and adjusted.

Overall, caring for and maintaining a foiling catamaran requires regular checking of the foils, hulls, rigging, and sails.

This will help ensure the boat is performing at its best and reduce the risk of damage or wear.

Additionally, regular cleaning of the foils, hulls, and rigging will help maintain the performance of the boat and ensure it is safe to sail.

Cost of Foiling Catamarans

For those looking to get into the sport of sailing, the cost of a foiling catamaran can be a major consideration.

While these boats are superior in terms of speed and maneuverability, they can also be expensive.

The cost of a new foiling catamaran can range from tens of thousands of dollars to several hundred thousand dollars, depending on the size and features of the boat.

Additionally, there are ongoing costs associated with foiling catamarans such as repairs and maintenance, as well as upgrades and accessories.

That said, it is possible to find used foiling catamarans for sale at a fraction of the cost of a new one.

Used boats may not have all the bells and whistles of a new model, but they can still be a great way to enter the world of sailing.

Many used foiling catamarans are also ideal for recreational sailing, and can provide hours of enjoyment.

For those looking for the ultimate sailing experience, a foiling catamaran may be the perfect choice.

The cost of these boats may be high, but the performance and enjoyment they deliver is unmatched.

With the right maintenance and upgrades, a foiling catamaran can provide years of fun and adventure.

Where to Find Foiling Catamarans

Foiling catamarans have become increasingly popular in recreational and competitive sailing, and are now available from a wide variety of retailers.

For those looking to purchase a foiling catamaran, there are a few different options to consider.

For those looking to buy a brand new foiling catamaran, there are several manufacturers that specialize in producing boats of this type.

These manufacturers typically offer a wide range of models, from high-performance racing boats to more relaxed recreational sailing boats.

Additionally, there are also online stores that specialize in selling foiling catamarans, offering a variety of models from different manufacturers.

For those looking for more of a budget-friendly option, there are also a number of used foiling catamarans available on the market.

These boats can often be found at online marketplaces or at sailing clubs and marinas.

Additionally, some sailing clubs and marinas offer rental foiling catamarans, allowing sailors to try out the boats before making a purchase.

Finally, for those who are looking to build their own foiling catamaran, there are a variety of kits and plans available online.

These plans often include detailed instructions, diagrams, and materials lists, making it easier for aspiring boat builders to construct their own boat.

In any case, there are plenty of options for those looking to purchase or build a foiling catamaran.

With the right research and preparation, anyone can enjoy the exhilarating experience of sailing a foiling catamaran.

Final Thoughts

Foiling catamarans are a type of sailboat that offer superior speed and maneuverability, and are becoming increasingly popular in competitive and recreational sailing.

With their various designs, applications, and maintenance requirements, foiling catamarans are perfect for sailors of all levels.

If you’re looking to pick up a foiling catamaran for yourself, be sure to research the different models, their associated costs, and where you can find them.

With the right care and maintenance, you’ll be sure to enjoy your foiling catamaran for years to come!

James Frami

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

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Published on April 10th, 2023 | by Editor

A-Class Catamaran having it both ways

Published on April 10th, 2023 by Editor -->

The singlehanded A-Class Catamaran has a strong presence in the USA, which was strong enough to host the 2022 World Championship, and strong enough for the country’s Ravi Parent to win the Open division world title.

Scuttlebutt editor Craig Leweck checked in with Florida A-Class sailor Axel Issel for an update:

The A-Class Class rules allow for development, which is good for improving the boat but can get expensive as gear becomes obsolete. How does this impact participation?

The A-Class is divided into two sub-classes separated by different sets of measurement rules; the Foilers (Open) and non-foiling (the Classics). In the case of the Classics that have been around 67 years, most development has occurred in the last decade or so with the change from straight dagger boards to C foils and the deck-sweeper mainsail with curved booms.

Older hulls and masts remain competitive but the newer configurations do provide a slight advantage. Today, Classic boats from 10+ years keep winning Nationals and Continental championships and boats with straight booms and daggerboards still are in the top 5 in the Euro circuit.

The Classic fleet keeps growing in most countries due to the speed and simplicity of the boat; very competitive, tactical, fun races, with plenty of accessible boats around the globe. In many parts of the world, the Classics are very popular with larger numbers than Foilers like in the US/Canada, Italy, France, Australia, etc.

Sailors in Classics are competitive at all ages, many well into their 70s so it is a class where you can grow and be at the top for decades with your same boat for many, many years.

The Foilers have seen the most recent development. Here newer boats (2019-20 and newer) make a difference over older ones since they are easier and more stable to foil. Participation in the class is achieved in Classics due to very even and fun races with skippers with 20 years fighting 70s-year-olds. Participation in Foilers comes from younger sailors trying to master the fastest single-handed catamaran in the world.

Most of the top sailors in the world raced A-Cats at some point, even though it is a non-Olympic class. The A-Cat has consistently proven itself in the international scene whereby the World, European, and North American Championships are frequented by some of the most famous sailors in the world.

However, it’s always taken the dedication of a pure A-Class sailor to win the Championships. This demonstrates the high level of performance within the class and it leads to amazing numbers of entries for such events. Today, almost all top professional regattas are raced in foiling boats, like the America’s Cup, the Ocean Race, SailGP, etc, so learning and growing in a foiling A-Cat gives you experience and advantage, attracting young talents to the fleet.

When was the shift to foiling? How did the class endure that transition? Were there kits? Foilers started around 2015, but in 2018 the class decided to create two sets of rules to keep the non-foiling boats competitive, and two sub-classes were born. I believe this was a wise decision, to make the class appealing to a wider population.

Today you can be competitive in your 20s and into your 70s, with a newer Foiler or with an older Classic. Regattas are usually scored in two fleets, and some, like the North American Championship regatta, have the two fleets + the “Overall NA Champion” who is the best skipper among the two classes.

The transition was progressive, initially some folks modified the trunks on the hull to insert the newer foiling blades. Today, to be competitive in Foilers, you need a newer foiling specific boat. Manufacturers build two models: the Foiler and the Classic. The Classic is lighter, simpler and less expensive. The Foiler has a lower hull profile; is heavier due to extra carbon needed to support extreme foiling forces, and needs better physical input.

Has the foiling equipment stabilized or is it still evolving? For the last three years (late 2019-2020), there have been no new developments. The latest one was the rudder differential. Some have been working on differential for center foils with no success. Also, cambered sails with specific masts have been designed, but nothing new has come out. Until measurement rules for Foilers are changed, it will be difficult to see any new significant design improvement.

How is the used boat inventory in North America? Today, there are around 20 used boats for sale. Some used boats for sale are almost new, like a 2022 Foiler and newer Classics. You can buy an old Classic for less than $5K and be competitive in the Classic fleet. Used boats and parts can be found in https://usaca.info/ and in https://www.facebook.com/groups/922063451790001/ .

Who are the suppliers for North America? Are there any in the continent? Boats and masts builders are in Europe. Today, the largest manufacturer of boats is eXploder from Poland (with accessible labor), which provides new Classics and Foilers. Fastboatstuff.com is their representative in the US, and they carry new boats and parts for almost all new and older model boats. North America is getting shipments from Europe usually two times per year with new boats and parts. I have been in the class three years and I always find the parts needed quickly. Top competitive sails are built here in the USA by Glaser, Sail Technologies, etc.

Why do Foilers and Classics race together? Because it is way more fun, and way more competitive. The fleet is well mixed during races. In addition, it is a good way of keeping the fleet growing, making an easy and fun entry point to the class with more options. For example, I started in Classics two years ago and after the Worlds in Houston last year, I sold my Classic and I switched to the Open class.

Usually, the top Foilers will have an advantage but most part of the fleet is mixed. In lighter winds like sub 10 knots, the boats are even and in lighter non-foiling conditions, Classics are faster. Top light sailors can start foiling downwind around 8 knots but most of the foiling fleet foils closer with 10 knots of wind 100% air time, and upwind foiling is mastered only by the ultra-top sailors, and usually they need 12-13 knots of wind to make real gains over the top Classics going upwind.

For us, the newer foiling sailors, learning to foil (like me!), will always have Classics around showing how much ground is lost while we are trying to fly……and once on air, if we do not do the correct angle, Classics will pass you by. .Racing with 50 boats on the line, is always more fun than 20-30 boats, and chances are you always will have someone next to you on every mark.

What is the ideal sailor weight for the A-Cat? I believe 170-195 pounds is the ideal range, NED 007 Mischa Heemskerk won the world championship several times and he is 225+ lbs; the latest World Champion USA 76 Ravi Parent (2022 Rolex Yachtsman of the year) weighs around 165lbs . Who knows….!

Where are the hubs of class activity in North America? Florida concentrates 30% of the fleet, with Key Largo, and the Sarasota/Tampa Bay area being the most popular spots, followed by Fort Walton and Melbourne, FL. Lake Lanier in Georgia has one of the largest fleets, Annapolis/West River area is popular as well.

Lake Carlyle in Illinois, where we raced the 2021 North Americans, have several active boats. Also, there are 10 boats in Alamitos Bay in California, and there is a large fleet in Ontario Canada where we raced the 2022 North American Championship.

I heard a new fleet will grow soon in Mexico City as well. This year we are all looking forward to race in October the ‘Alter Cup’ in Pensacola, Florida, only for Classic boats, where skippers from other multihull fleets join the A-Catters to determine the best multihull skipper!

Tags: A-Class Catamaran , Axel Issel , Craig Leweck

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