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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

    25.06.2003

    Back from Sardinia.

    42 hours at sea were all that was needed for Gitana to cover the 350 miles (670 km) between Cagliari (Sardinia) and La Ciotat (France), mainly head to wind or with no wind at all. A lively problem-free sail back.

    par Gitana

    42 hours at sea were all that was needed for Gitana to cover the 350 miles (670 km) between Cagliari (Sardinia) and La Ciotat (France), mainly head to wind or with no wind at all. A lively problem-free sail back.

    Even if deliveries are not important in themselves, the crew still have to pay a great deal of attention. These boats are prototypes “…they are very physical and tiring to sail, they are not cruising machines at all…”, affirms Jean-Yves Le Govic alias Napo, a member of Gitana’s technical team who was on board for the occasion. …” But they are exceptional fantastic sailing boats. It is the first time I have sailed Gitana X on the open sea. Pure pleasure at the helm, she just slips through the water. And you can reach unbelievable speeds with very little wind. Lionel (the skipper) is a different guy altogether at sea – particularly sailing short-handed with sailors and friends like Olivier Wroczynski and Yann Marilley. One hundred percent pure pleasure… “.

    The 5th man invited on board for the occasion confirms. Alain Hubert*, polar explorer with many a first in extreme conditions, was getting his first taste of ocean-racing multihulls : “… I didn’t expect to do this voyage non-stop. I thought that sailing meant making stop-overs in harbour every night. I’ve discovered an extraordinary milieu with truly professional sailors. It’s fascinating to spend a night at sea, with all the stars and fluorescent plankton in the wake of the boat. It’s a bit like in polar regions when you have no marker other than the horizon which moves forward as you do. In fact, I only went down below for an hour and a half throughout the duration of the voyage, preferring to make the most of the sea environment which I adore. I’m going to organise my next expedition*… “.

    As Alain Hubert discovers the world of sailing, Lionel Lemonchois states that if he had enough time, he would really like to follow in Alain’s footsteps : ” …I like what he does. The Arctic is still a space of pure freedom, where there are not many people, an extreme milieu. And I know nothing about it. I’d like to have the chance to find out…”.

    Preparation for Marseille

    Everything has to be prepared so that the new (pivoting) dagger board works perfectly well. For the foils (skates), the lifting/lowering system has been improved and fine tuned following changes to incidence. Finally, between each Grand Prix, the general maintenance on a racing yacht is extremely demanding.

    Lionel Lemonchois : “…part of the normal work, but work never the less. And as the only way to move is forwards, then we are particularly attentive to the tiniest detail. For Marseille, I hope we’ll have at least 15 knots of wind. Firstly it’s more interesting from a sailing point of view. And Gitana is more at ease in stronger winds…”

    Twelve multihulls are expected to take part in Marseille for the 3rd Grand Prix of the season which is to take place from 4th to 6th July 2003 (after Lorient/F and Cagliari/It). Both Bayer and Belgacom will be back in action on this occasion.

    *For 2006, Alain Hubert is preparing the Grande Dérive Arctique (the Great Artic Drift) dreamed up by the Norwegian Fridtjöf Nansen in 1895, a project which involves reaching the geographic North Pole by boat. In order to do so, he wants to acquire the only polar sailing boat capable of withstanding the pressure of the ice, the ex-Antartica which belonged to Jean-Louis Etienne and to Sir Peter Blake. This expedition takes form under the aegis of the International Polar Foundation created by Alain Hubert two years ago.

    www.antartica.com & www.internationalpolarfoundation.org