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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

    01.09.2009

    Delayed launch of Gitana 11.

    Like a number of French school children who will be heading back to school tomorrow, it was scheduled for the revamped Gitana 11, to return to her natural element alongside the quays in the Breton port of La Trinité-sur-Mer on Wednesday 2nd September. However, a disturbed weather system, forecast over the tip of Brittany from tomorrow, has forced Y…

    par Gitana

    Like a number of French school children who will be heading back to school tomorrow, it was scheduled for the revamped Gitana 11, to return to her natural element alongside the quays in the Breton port of La Trinité-sur-Mer on Wednesday 2nd September. However, a disturbed weather system, forecast over the tip of Brittany from tomorrow, has forced Yann Guichard and the shore crew from Gitana Team to delay the expected launch a few days.
    The ten months refit to extend Gitana 11 was due to be completed tomorrow by the return to the water of the modified trimaran. However, the weather has decided otherwise: according to the latest forecasts, a 20 to 25 knot SW’ly wind is expected for Wednesday, prior to veering round to a still strong NW’ly at the end of the week. Such muscly wind conditions unfortunately won’t permit the various handling and lifting operations necessary for the launch of the 77 foot maxi-trimaran. Nevertheless, the current forecast shows that another potential launch slot may open up early next week, though for now it’s too early to say if the weather will once again see fit to scupper the plans of Baron Benjamin de Rothschild’s team.
     
    For Gitana 11, which it is worth remembering has been modified with a view to her participation in the Route du Rhum 2010, a few days delay in the initial schedule won’t be a disadvantage, as Yann Guichard explains: “After some long months being refitted, all of us were naturally keen to see Gitana back in the water. However, nothing’s pressing and I prefer to wait for an optimal weather window for the first ‘outing’ of the new trimaran. The crew, managed by William Fabulet, have done a remarkable job over the winter and the boat will very soon reveal if our choices were pertinent. In the meantime though, we just have to be patient! We’re going to make the most of these few days delay to finalise and polish up the details.”
     
    The new date for the launch will be announced very shortly.