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  • Gitana 18
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  • Retractable Y-shaped foils, adjustable in three dimensions

    Inspired by the appendages of the America's Cup foiling monohulls, these Y-shaped foils have a wingspan of over 5 metres. They are designed to generate powerful lift, increase power and offer a wide range of adjustments to optimise flight at every point of sail and in all conditions. Beyond their impressive size, these foils feature many unique innovations.

    Revolutionary U-shaped rudders

    These are probably the most visually striking innovations on the new Maxi Edmond de Rothschild. To fly high above rough seas while maintaining control, the team wanted very long rudders that would remain in contact with the water. The challenge is that longer rudders tend to flex under load, severely affecting steering and the efficiency of their lifting surfaces. A new geometry was needed to give these appendages maximum stiffness, resist cavitation and ultimately improve control of the boat and make better use of its power. The result is a set of U-shaped rudders over 4 metres long, a metre longer than those on Gitana 17. Their shape, reminiscent of a tripod or an inverted π, is only the visible part of what makes them so distinctive.

    A daggerboard optimised to stabilise the boat and limit cavitation

    With its wide span, the daggerboard resembles an aircraft tail assembly, with two adjustable flaps: one on the vertical section and the other on the horizontal section, the distinctive “manta-ray wing”. On Gitana 18, the innovation is to position this wing behind the vertical part of the appendage, rather than directly beneath it, to minimise flow disturbance and cavitation.

    Gitana 18’s daggerboard

    Rig: adjustable spreaders to control mainsail power while sailing

    Gitana 18’s mast is 1.50 metres taller than its predecessor’s. The boom is also shorter, creating a more slender sail plan. The major innovation is a set of spreaders that can be adjusted while sailing to bend the mast fore and aft. Actuated by hydraulic rams, these spreaders can pivot through 35 degrees to adjust the bend in the middle of the mast. This unprecedented system allows the sailor to control mainsail power: adding depth in light winds to take off sooner, or flattening the sail to reduce power at high speed or in strong winds. Adjusting the depth, and therefore the power, of the mainsail can also save a solo sailor time and energy by reducing the need for risky manoeuvres or headsail changes.

    Central hull:
    an integrated, structural coachroof

    The naval architects and Gitana design team wanted an exceptionally stiff, structurally robust platform. This applies both to the floats, which must withstand heavy loads from the foils and rudders, and to the central hull, which is subject to torsion. The enclosed coachroof is integrated into the hull and contributes to its structural strength. Inside, the cockpit brings all sail-handling controls together, with ergonomics shaped by many hours of design and development. The coachroof also stands out for the number and size of its windows. This configuration meets the visibility requirements of the Ultim class rules and gives sailors the best possible view to keep a visual watch.

    Gitana 18’s coachroof

    02.02.2008

    Cape Horn for his Birthday.

    For more than 24 hours, Gitana 13's crew has been focusing more on surviving than on sailing. Off the coast of Tierra del Fuego, the maxi-catamaran equipped by Baron Benjamin de Rothschild experienced blustery conditions as it was hit by two successive cold fronts.

    par Gitana

    For more than 24 hours, Gitana 13’s crew has been focusing more on surviving than on sailing. Off the coast of Tierra del Fuego, the maxi-catamaran equipped by Baron Benjamin de Rothschild experienced blustery conditions as it was hit by two successive cold fronts.

    Lionel Lemonchois and his nine-man crew are beating to windward, slowly making their way to the tip of South America which they hope to round this evening. After 16 days at sea, the ten sailors onboard Gitana 13 had their first day of rough weather yesterday. Sailing close-hauled into a wind blowing at 40-45 knots in rough seas—3-4-meter swells—the maxi-catamaran had to force its way forward toward Lemaire Channel. “The past day was really tough! We had gusts up to 50 knots, and on deck the crew had to drop the mainsail. We plugged along at around 10 knots flying only the staysail…it was really blowing out there. The wind calmed a bit at the end of the day, falling to 30-35 knots. Gitana 13 was then flying the main alone with 3 reefs, under a beautiful cloudy sky,” said Dominic Vittet.

    It looks as though conditions will also be blustery in the channel separating Staten Island from Tierra del Fuego. Even though the wind has eased to around 25 knots, Lemonchois and his crew will have to deal with rough seas pushing 7-meter swells. “After Lemaire Channel, we should be able to make it the rest of the way to the Horn on a reach. We don’t have any time to lose, because the window that we’re targeting to make the rounding this evening is narrow. We’re going to try to slip through a mouse hole,” said Vittet, the onboard navigator. Renowned for its western storms that can crop up daily, Cape Horn is never an easy obstacle to surmount, particularly when doing it against the grain, i.e., against the prevailing westerly winds and the big swells from the Pacific that roll freely through this southern latitude. 
    While the crew prepares and hopes to round the famous South American promontory this evening, Gitana 13’s skipper is celebrating his birthday today. Making this legendary rounding would sure be a great gift for a sailor.

    You have to earn Cape Horn

    Historically, sailing crews hired to make this passage between the Atlantic and Pacific Oceans needed equal parts courage and stubbornness. In the early years of the 20th century, two stories of attempts at rounding Cape Horn show the difficulty of this exercise.

    In 1904, American four-masted “Edward Sewall” encountered such bad weather that it took nearly three months, from March to May, to get past the “rock.” Five years later, the three-masted “La Rochejaquelein” from Nantes spent more than two months getting past the Chilean cape. But it wasn’t rare at the time that sailboats, meeting persistently bad weather, turned back and opted for the round-the-world route to San Francisco via the Indian Ocean.

    For seven of the ten crewmembers onboard Gitana 13, this rounding of Cape Horn will be their first. Lionel Lemonchois, Nicolas Raynaud and Florent Chastel had the good fortune of rounding the Horn during past record attempts on the Jules Verne Trophy. None of the other crew has ever ventured to 55°56 S before. But of the three Cape Horners onboard, only Lemonchois has ever done this rounding from east to west. He did this same route from New York to San Francisco in 1994 and 1998 with Isabelle Autissier and her crew.