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High-Speed Foiling Yachts Are Changing Boating as We Know It. Here’s What It’s Like to Ride One.

From racing sailboats to weekend cruisers, foils represent the industry’s next sea change., michael verdon, michael verdon's most recent stories.

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The F50 is techy, edgy, exhilarating, and, without the right skipper, dangerous. “A hot-rod version of the AC50,” is how naval architect Paul Bieker describes it, referring to the 50-foot catamaran raced in the 2017 America’s Cup , on which this one is based. Bieker’s studio helped design the foils for the America’s Cup boat, but the SailGP design is far faster, having just broken the 60 mph redline, thanks in part to thinner carbon-fiber “L” foils with the same bending stiffness and strength as steel, but at about a fifth of the weight. 

It’s hard to understand how powerful these boats are until you’re airborne on one. So enormous is the aerodynamic pressure on the rig that a massive rudder cracks during our training session. “The boat moves fastest by flying as high and unstable as possible,” says Paul Campbell Jones, the U.S. team’s wing trimmer. “The goal is to push the boat to the edge—but if you go a centimeter too far, you either crash or fall off the foils and do a big nosedive.”

It’s high-risk, high-wire sailing at a technological level never before seen, one complemented by the unprecedented athleticism required of the six sailors who pilot the boat—a combination that has helped elevate the sport to a new level. 

Campbell Jones has raced on both the AC50 and F50 and says that the evolution is dramatic. “The AC50 didn’t have batteries to lower the foils, so it was seriously more labor intensive,” he says. “We had six sailors on the AC50s and four of them were grinders, turning handles.” The F50, he adds, “is way faster than the AC50, and we can do a lot more maneuvers.”

Standard on the last three America’s Cup fleets and tapped for the upcoming 2024 event, global ocean races and even Olympic windsurfers, foils are changing the rules of sailing. But they’re revolutionizing motorboats, too. In fact, foils can now be found on all sorts of watercraft, from e-foiling boards, jet skis and midsize motoryachts.

“The first foiling powerboat came from Italy and flew in 1906,” says Luca Rizzotti, founder of the Foiling Organization. Alexander Graham Bell’s HD-4 was the second successful attempt in 1918. “But it weighed 5.5 tons and was powered by two Liberty aircraft engines, so was not practical.”

Fast-forward a century with America’s Cup efforts to appeal to the masses with hyper-speed foilers. “Suddenly, the best technology, materials and minds were brought to bear to make these real—in record time,” says Bieker. “The breakthroughs came very fast.”

It’s revolutionizing motorboats, too, according to Bieker. His Anacortes, Wash., firm recently designed foils for the Navier N30, a nine-passenger electric powerboat that glides above the water on three carbon blades, each measuring seven feet five inches. 

Where the racing cat delivers raw power, the N30 is about passenger comfort and energy efficiency; think Tilt-a-Whirl versus magic carpet. The foils on the N30 use flaps that adjust 50 times per second, informed by sensors that measure wave conditions. The driver controls speed and steering, but the active foiling system does the rest. 

The N30 foils at 15 knots, has a range of 75 nautical miles at 22 knots, and tops out at 35 knots, while three modes (Cruise, Sport, and Economy) match conditions or pilot preference. Navier says the N30 can handle five-foot seas, though during our test ride in San Francisco Bay, we never experienced anything over two feet as we hovered above the chop—minus any sense of wave action—in the sanctuary of the pilothouse version, which will be delivered to its first buyer later this year. 

Navier commissioned the respected Maine boatbuilder, Lyman Morse, to build its pilothouse version (it also has a center-console prototype, which was not as well finished). I rode on both during the SailGP finals and it felt so peaceful coasting over the waves, rather than punching through them, while watching the racing.

I was able to drive the pilothouse version a few days later, and the fit and finish was impressive, as was the intuitive response of the foils. The company talks about the similarities with flight, but this felt like boating, just above the waves. The bow and stern thrusters also allow exceptional docking, thanks to the electrical system’s instant response.

On several occasions, the C-8 refused to foil or the foils retracted unexpectedly. A software glitch with the inverter was to blame—an issue resolved remotely by Candela’s headquarters in Stockholm, where 40 of the 200 employees are engineers. But software issues, such as those we experienced, could pose a real problem when boating during off-hours. On the plus side, software also controls safety functions, such as preventing overly aggressive maneuvering and ensuring a return home when the battery is depleted. 

Once rebooted, the C-8 turned in a good performance. It’s intuitive to drive and, for an open design, remarkably quiet, with conversation possible even running at speed. I spent about an hour aboard the C-8 and recall flying above one stretch of water, with currents and tides running against each other, that would have battered a conventional boat.

Candela is also making a center-console version of the C-8, which should do well in warm-water areas like Florida. New models will feature Polestar 2 EV batteries that increase range from 40 to 57 nautical miles and have 40-minute fast-charging potential.

Will foiling powerboats become mainstream?

Candela, the only builder with a production line, is convinced foiling is the future. High-volume production builders, and even a few superyacht yards, are also experimenting with the innovation. “Designing something that flies is a real technical challenge,” says Bieker. “But foiling uses a fifth of the energy of a similar-sized deep-V powerboat. Rising energy prices might be what tips the scale in their favor.” 

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F1x A-class foiling catamaran

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

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

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

Unique design enables top performances

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

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

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

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

We build your new foiling boat!

Technical details.

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

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

Specifications

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

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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:

Yes, I want a F1x A-cat!

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Just enjoy high speed - foiling

” iFLY – Born to FLY “

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

iFLY15 – Technical SPECS

Length 4.63 m, 15 ft..

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

Width 2.50 m.

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

7.5 m mast / 11.2 sqm mainsail

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

Draft: 95 cm

Weight: 90 kg.

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

Crew 1-2 - max.180kg

Flysafe® foil control.

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

Know More >>>

Different - Rig Options

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

Full Carbon Hulls

Looking for the perfect setup for your foiling sailboat.

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

Performance

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

HULL Design

full carbon – lightweight – performance design: Born to foil

High Performance Rig Options

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

Two Layer Trampoline

AERODYNAMIC INNOVATIVE WING TRAMPOLINE CREATING LIFT.

Full Carbon T-Foils 

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

flySafe® dynamic foil control system

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

IFLY MAIN FOIL DIFFERENTIAL TECHNOLOGY

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

Innovations and more   >>>

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

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

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

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

FOILING PLEASURE AND PERFORMANCE ALSO IN CHOPPY WATERS

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

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

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

EASY TO LEARN FLYING BY AVERAGE SKILLED AND TRAINED SAILORS

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

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

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

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

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

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

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

Contact : [email protected]

Catamaran Europe Central

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

MDT FOIL CONTROL – iFLY rake control

News and More

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

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Sailing’s Hydrofoiling Revolution

• By Herb McCormick
• January 18, 2023

There’s a revolution underway in the sport of sailing, and it can be summed up in one simple word: foiling.

More specifically, we’re talking about hydrofoils , the winglike appendages mounted beneath the hull of a vessel that, at a certain speed, lift the hull clear of the water. When this happens, the foiling sailboats can reach speeds two or even three times faster than possible in “displacement” mode.

And sailboats are just one element of the foiling revolution: Surfboards, paddleboards and powerboats are also getting in on the act.

An Italian naval architect named Enrico Forlanini is credited with developing the first waterborne hydrofoils, which he affixed to a 60 hp, airscrew-driven craft that topped off at 36.9 knots back in 1906. In the century that followed, a series of would-be inventors took a swing at the concept with varying degrees of success. Foiling sailboats finally ascended into the mainstream during the 2013 America’s Cup, when Oracle Team USA beat Emirates Team New Zealand in a match between foiling 72-foot catamarans (the Cup has been contested in foiling cats ever since).

Surprisingly enough, my first foiling experience happened some three decades ago, aboard something called a Hobie TriFoiler, from the popular manufacturer of Hobie surfboards, beach cats and kayaks. The TriFoiler, basically a 22-foot trimaran with a central pod and a pair of mainsails stepped on the twin outriggers, was invented by a fanatical California engineer named Greg Ketterman. The sail controls were laid out just forward of the tiny airplane-style cockpit; you steered with foot pedals. It was so ridiculously easy that even a gremmie like me had the thing foiling within moments of getting in and reaching off.

But after the initial thrill, it was actually kind of boring. Which, I believe, is why it went out of production soon after. The TriFoiler was, unfortunately, way ahead of its time.

Such was the extent of my personal foiling experience until this past summer, when a new class of foiling monohull skiffs called Persico 69Fs rolled into my home waters for a series of races among youth squads in the class’s inaugural season. I got an invitation to take a spin.

After donning my helmet, wetsuit and life jacket, I was handed the helm with a pair of skilled young sailors on board. At 25 knots, we were towed into Narragansett Bay behind a powerful RIB, foiling all the way. It was terrifying. And a preview of coming attractions.

Once the tow dropped us, the sails went up and we bore off. I skied the tiller extension while scrambling out onto the hiking racks. Which sent us off on a screaming reach. Which flipped the 22-foot-7-inch carbon rocket ship.

Twenty seconds into foiling, and I’d capsized the bloody thing. How embarrassing.

The kids, bless them, were kind and patient. We got the whole shooting match, including ourselves, back upright and tried again. The mainsail trimmer sheeted it home, we started to accelerate, and he said: “Here we go! You’re up. You’re flying!” Indeed, we were.

Hard on the breeze in the 12-knot southwesterly, things unfolded quickly. Spray was flying, and I took more than one solid wave to the kisser. I was mostly too frightened to concentrate on anything but driving, but I did glance at the speedo once: 17.4 knots. (I felt pretty chuffed until later learning a 69F’s top speed is 34 knots. Ugh.)

However, I guess I’d proved the point: With a couple of sailors who know what they’re doing, foiling is for everyone. From now on, just call me Mr. Foiler.

• More: Foils , Hydrofoil Boats , Hydrofoiler , November 2022 , Sailboats , Sailing Yachts , Yachts
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Foiling technology: everything you need to know about hydrofoils

Fitting foils to powerboats is all the rage, but how do they work and why is foiling back in fashion?

What is foiling?

Foiling refers to the use of hydrofoils attached to the hull of fast boats, which provides additional lift at planing speeds – often enough to lift the hull completely clear of the water.

What is the benefit of this?

Efficiency. The enemy of fast boats is the amount of effort required to push them through the water. Planing boats go some way to addressing this by rising up over their own bow wave and skimming across the surface, but the stern sections are still immersed, creating significant hydrodynamic drag. It follows that if you can lift the boat completely clear of the water, hydrodynamic drag is only acting on the foils themselves and the sterngear that propels and steers it.

Any advantages beyond efficiency?

Lifting the boat clear of the surface can reduce the disturbance of waves, smoothing the ride, but only up to a point. It’s not just about lift though – active foils can also be used to improve stability or handling and in some circumstances, can improve efficiency even without lifting the boat.

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How do foils work.

Foils work in a similar way to aircraft wings. In simple terms, as they move through the water they deflect the flow, which exerts a force on the foil. If that force is upward, the faster they move, the greater the lift.

So why are they so much smaller than aircraft wings?

Because water is much denser than air – almost 800 times, in fact. The foils have far more to push against than aircraft wings, so don’t require the same surface area.

Is this new technology?

Far from it. Foiling technology can be traced back to 1898 when Italian inventor Enrico Forlanini began work on a ‘ladder’ foil system, obtaining patents in both the UK and the USA. He had a prototype operating on Lake Maggiore soon after. British boat designer John Thornycroft followed up with a series of scale models featuring stepped hulls and a single foil, and by 1909 had a full-scale 22ft prototype running. During WWII, the German military developed a 17-tonne foiling mine layer that was tested in the Baltic at speeds of up to 47 knots. By the early 1950s, the first commercial hydrofoil ferry was running between Italy and Switzerland and a decade later, a private hydrofoil yacht featured in the Bond movie Thunderball.

Why did they never catch on in production boating?

Traditionally, high-speed hydrofoils used large V-shaped foils that jutted out beyond the boat’s beam. This made berthing tricky and increased the draught. They were also costly to construct, vulnerable to damage and difficult to power, as the propellers of conventional shaftdrives would be clear of the water once foiling. Lastly, although hydrofoils were often more efficient than monohulls, high-speed cats could usually match the efficiency without the drawbacks.

Why are they back in the news?

Foiling technology came back into public focus when the 2013 America’s Cup contenders started to use foil-shaped daggerboards to hit speeds of more than 40 knots. Ben Ainslie’s spectacular last-gasp victory for the Oracle USA team and his subsequent BAR Land Rover Cup Challenger brought foiling to a global audience. More recently, we’ve seen the emergence of several foiling motor boats, including the SEAir RIB and the Sunreef Open 40 Power. More exciting still is the news that Princess will use an advanced Active Foil System on its new R Class superboat .

What has changed?

Technology has overcome many of the shortfalls of older systems. Simon Schofield, chief technology officer at BAR Technologies, told MBY the real game changer has been the adoption of ‘Dalí’ foils. Instead of two fixed V-shape foils, Dalí foils use four independent L-shaped blades that stick out of the hull at an angle before curving up like Salvador Dalí’s famous moustache. They are far more efficient and can be retracted, solving the berthing and draught issues. In addition, computer-controlled active systems allow the foils to be adjusted to suit speed and sea conditions. This doesn’t just improve efficiency, it can enhance the ride and handling too. When cornering, for example, a traditional hydrofoil boat doesn’t lean into the turn, making it uncomfortable for passengers. An active system can adjust each foil to induce the correct degree of lean. Modern materials also reduce drag and cavitation.

How about propulsion?

The Enata Foiler uses twin BMW diesel 320hp engines, but instead of being connected to the propellers with hefty drag-inducing shafts and gearboxes, these generate electric power which can be sent down a thin flexible cable to slender electric motors mounted on the retractable rear foils.

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Things to Do in Elektrostal, Russia - Elektrostal Attractions

Things to do in elektrostal.

• 5.0 of 5 bubbles
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1. Electrostal History and Art Museum

2. Statue of Lenin

3. Park of Culture and Leisure

4. museum and exhibition center.

5. Museum of Labor Glory

7. Galereya Kino

8. viki cinema, 9. smokygrove.

10. Gandikap

11. papa lounge bar, 12. karaoke bar.

• Statue of Lenin
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Rosatom Starts Production of Rare-Earth Magnets for Wind Power Generation

TVEL Fuel Company of Rosatom has started gradual localization of rare-earth magnets manufacturing for wind power plants generators. The first sets of magnets have been manufactured and shipped to the customer.

In total, the contract between Elemash Magnit LLC (an enterprise of TVEL Fuel Company of Rosatom in Elektrostal, Moscow region) and Red Wind B.V. (a joint venture of NovaWind JSC and the Dutch company Lagerwey) foresees manufacturing and supply over 200 sets of magnets. One set is designed to produce one power generator.

“The project includes gradual localization of magnets manufacturing in Russia, decreasing dependence on imports. We consider production of magnets as a promising sector for TVEL’s metallurgical business development. In this regard, our company does have the relevant research and technological expertise for creation of Russia’s first large-scale full cycle production of permanent rare-earth magnets,” commented Natalia Nikipelova, President of TVEL JSC.

“NovaWind, as the nuclear industry integrator for wind power projects, not only made-up an efficient supply chain, but also contributed to the development of inter-divisional cooperation and new expertise of Rosatom enterprises. TVEL has mastered a unique technology for the production of magnets for wind turbine generators. These technologies will be undoubtedly in demand in other areas as well,” noted Alexander Korchagin, Director General of NovaWind JSC.

For reference:

TVEL Fuel Company of Rosatom incorporates enterprises for the fabrication of nuclear fuel, conversion and enrichment of uranium, production of gas centrifuges, as well as research and design organizations. It is the only supplier of nuclear fuel for Russian nuclear power plants. TVEL Fuel Company of Rosatom provides nuclear fuel for 73 power reactors in 13 countries worldwide, research reactors in eight countries, as well as transport reactors of the Russian nuclear fleet. Every sixth power reactor in the world operates on fuel manufactured by TVEL. www.tvel.ru

NovaWind JSC is a division of Rosatom; its primary objective is to consolidate the State Corporation's efforts in advanced segments and technological platforms of the electric power sector. The company was founded in 2017. NovaWind consolidates all of the Rosatom’s wind energy assets – from design and construction to power engineering and operation of wind farms.

Overall, by 2023, enterprises operating under the management of NovaWind JSC, will install 1 GW of wind farms. http://novawind.ru

Elemash Magnit LLC is a subsidiary of Kovrov Mechanical Plant (an enterprise of the TVEL Fuel Company of Rosatom) and its main supplier of magnets for production of gas centrifuges. The company also produces magnets for other industries, in particular, for the automotive

industry. The production facilities of Elemash Magnit LLC are located in the city of Elektrostal, Moscow Region, at the site of Elemash Machine-Building Plant (a nuclear fuel fabrication facility of TVEL Fuel Company).

Rosatom is a global actor on the world’s nuclear technology market. Its leading edge stems from a number of competitive strengths, one of which is assets and competences at hand in all nuclear segments. Rosatom incorporates companies from all stages of the technological chain, such as uranium mining and enrichment, nuclear fuel fabrication, equipment manufacture and engineering, operation of nuclear power plants, and management of spent nuclear fuel and nuclear waste. Nowadays, Rosatom brings together about 350 enterprises and organizations with the workforce above 250 K. https://rosatom.ru/en/

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Yachting World

• Digital Edition

Watch the world’s first foiling cruiser take flight at 30 knots: first video of Gunboat’s G4

• Toby Hodges
• April 12, 2015

Gunboat's G4 has been launched in St Maarten, risen to her foils in 14 knots wind and has already hit 30 knots. Watch the video here

A pioneering moment for production yachts as the Gunboat G4 foils during early trials Credit: Rachel Jaspersen / Ocean Images

Hats off to Gunboat. The company that put the cool into cruising cats has done it again by producing the world’s first foiling ‘cruising’ yacht.

And it seems the G4 lives up to her promise – she actually flies. The G4 launched this week in St Maarten, rose onto her foils in 14 knots wind, and has already hit 30 knots.

“It’s insane!” Gunboat’s ecstatic founder Peter Johnstone told me after the G4’s first trials. “You look at the photos and your instinct and intuition tell you it must be crazy scary. But up there onboard the boat it’s mind-bending – it couldn’t be smoother or calmer!”

This first official video of the G4 inflight is a must watch. Here it is:

While the America’s Cup teams continue to dispute what size cats to race, Gunboat’s new 40-foot weapon is proof that the foiling effect is applicable to the broader sailing public. In one of the most radical steps in boatbuilding history, Johnstone, the Dutch DNA design team and builders Holland Composites have created the first production cruising foiler.

The potential speeds of the G4 are unheard of for anything other than grand prix racing multihulls, so there will be little that will be able to touch her on the water.

“Max speed recorded so far is 31.9 knots,” Johnstone reports. “We should get into the mid to late 30s as the tuning progresses.” Stop and consider that for a minute!

Initial trials have been held in various winds this week from 9-25 knots. “At the top end, you drop a reef in and it gets easier and faster as you lower the centre of effort.”

“And there is definitely an upwind foiling mode,” Johnstone reckons. “It’s pretty dramatic when you dial in the rake of the leeward board. The pitching stops and the speed goes up two or three knots from 13 to 16 knots.

“There is the potential to do 18–19 knots upwind.”

Heeled and flying: the Gunboat G4 foiling during her first week of trials off St Maarten

The 15ft long daggerboards of the G4 lift to draw just 2ft. The rake and height of these are adjustable by hand while sailing – so you can set the ride height to conventional mode should you not want to foil.

But an aspect Johnstone was particularly happy with was the comfort of the ride. “You sheet in, she rises up and the speed doubles. The ride gets noticeably smoother and more comfortable – we’ve had people walking around the deck, the boat has really nice manners.”

The cockpit ‘galley’ island on the Gunboat G4

The G4 has an added twist of wow-factor: like the rest of Gunboat’s range, she offers accommodation too. The cockpit has a galley style island for cooking and socialising around (granted it’s a bit exposed to brew up at those speeds) – plus there are two double and two single berths within.

The G4 is surely sailing’s ultimate adrenaline rush for a wealthy owner. “Get the gun, be the party, cruise home” is Gunboat’s motto for the boat. Can you imagine seeing a fleet of them zinging around at a regatta?

Gunboat took a big risk with this innovative project, which is set up to be production-built. After the results of these early trials they will doubtless be rewarded by a string of orders for this, the hottest new ride available.

Our lucky technical editor Matt Sheahan will be getting aboard the G4 in the next fortnight in the Caribbean. His full report on the future of foiling cats will be in the July issue of Yachting World.

“The G4 is already foiling in 14 knots of wind and we think she will do so in 12 knots with the J1,” says Gunboat’s founder Peter Johnstone.

All pictures by Rachel Jaspersen / Ocean Images