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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

    07.02.2008

    FULL STEAM AHEAD!.

    The maxi-catamaran equipped by Baron Benjamin de Rothschild had to wait five days at the doorstep of Cape Horn due to bad weather. Following one last night in the shelter of Tierra del Fuego, Gitana 13 should be back on its way to San Francisco this morning. Lionel Lemonchois and his crew of nine are back to the business at hand: trying to beat the…

    par Gitana

    The maxi-catamaran equipped by Baron Benjamin de Rothschild had to wait five days at the doorstep of Cape Horn due to bad weather. Following one last night in the shelter of Tierra del Fuego, Gitana 13 should be back on its way to San Francisco this morning. Lionel Lemonchois and his crew of nine are back to the business at hand: trying to beat the Route de l’Or record.

    “When we round Cape Horn, the wind should have weakened to 25 knots…but the hundred or so miles we need to cover to get there won’t be a pleasure cruise!” said Dominic Vittet. This is because the 33-meter catamaran will have to sail close-hauled (Ed.: into the wind) all the way to the tip of South America. This wind angle is not the most comfortable, especially for catamarans and other multihulls.

    Fortunately, once they are past the legendary promontory, Team Gitana expects the winds to wheel around to the east-southeast, which means a reaching wind: “50 miles after the Horn, the wind will turn, and this will be to our advantage. We’ll be able to sail north-northwest toward the next low-pressure system,” said the onboard navigator.

    The team expects to round Cape Horn Thursday evening or Friday morning. This will depend on Gitana 13’s speed upwind over the 110 nautical miles separating Lemaire Channel from the famous rock and on the actual state of the seas and strength of the wind. Even with a reaching wind, the subsequent trip up the rocky coast of Chile promises to be challenging.

    In the crew’s words

    “We’re obviously thrilled that the wait is over. Because of the weather, we had no other choice but to lay low. But it’s hard to be patient zigzagging along the coast since we’re in a race against the clock. Still, it’s fitting to find ourselves in a situation like those we read about in histories of Cape Horn. It adds magic to the surroundings and to our adventure,” said Olivier Wroczynski.