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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

    19.10.2006

    Loïck Peyron Interview.

    The trimaran Gitana 12 left the port of Trinité sur Mer yesterday morning bound for Saint-Malo, while Gitana 11 will set sail this morning, Thursday 19 October. For Thierry Duprey du Vorsent and Lionel Lemonchois, this will be the final leg of their preparations and a chance to get some last sailing practice under their belts before the start, on 2…

    par Gitana

    The trimaran Gitana 12 left the port of Trinité sur Mer yesterday morning bound for Saint-Malo, while Gitana 11 will set sail this morning, Thursday 19 October. For Thierry Duprey du Vorsent and Lionel Lemonchois, this will be the final leg of their preparations and a chance to get some last sailing practice under their belts before the start, on 29 October, of the eighth edition of the transatlantic solo race, the Route du Rhum / La Banque Postale.
    Loick Peyron, Gitana Team general manager, 6 participations in the Route du Rhum:

    How are the preparations going? “For a solo race, the key is always reliability rather than out-and-out speed. The idea is to have as few choices as possible in order to limit the problems and questions. While the two skippers were on “survival” training, I went out with the technical team on each of the trimarans to double-check the boats’ nerve centres, so as to have an external view of their preparation and reliability. We’ve also done a lot of work on the onboard equipment, like the battens, blocks, tool case, etc., also in order to reduce the degree of choice. It’s essential to alternate major solo forays with short outings, in order to perform manoeuvres, test the equipment, experience situations to which you have to react, and acquire more reflexes. And there’s no denying that today’s solo sailors have done a lot more sailing in Route du Rhum configuration than for previous editions. Thierry, who was a solo novice, had to go out for longer in order to get a grasp of the sleep management and acquire a rhythm, as it was a steep learning curve for him…”

    How will you track the race? “Our way of functioning with two skippers at sea (Lionel Lemonchois and Thierry Duprey du Vorsent), myself a former sailor now on land (Loick Peyron) and an extensive technical team, is really enjoyable as we don’t have the same baggage or the same approach. This allows problems to be dealt with which would have been omitted or ignored. So the soloists will be very well assisted on land, with a weather assistant (Sylvain Mondon from Météo France) supported by one “Sherpa” for each boat (Mayeul Riffet for Gitana 12 and Yann Guichard for Gitana 11), and myself as strategic supervisor. We will receive all the logs from the two Gitanas, every half-hour, complete with speed, course, atmospheric pressure, etc… So we’ll have a tactical vision for each of the Gitanas and an overview of the fleet of trimarans.”

    What are the keys to sailing solo? “It’s all about the ability to keep going fast while doing the work of a crew. So it’s essential to be right on the ball in terms of the settings and the operation of the automatic pilot. That’s the key to the sleep cycle, avoiding fatigue, and maintaining reactivity… The solo settings are more difficult because they’re “unnatural,” less high-performance, but safer. Where the land-sea relationship is concerned, the solo sailor is up to date with the information arriving from the land, but it’s important to learn to filter it, manage it and especially put it into perspective so as not to be swamped by it and maintain a general strategy that might well evolve, but only if really necessary. It is important not to call it into question at every check-in. It’s difficult to avoid cutting off the torrent of e-mails which tend to regulate the day, as learning to detach oneself from the land information and the other competitors is a big advantage…”