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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

    10.05.2005

    Down the coast of Portugal.

    Racing is every bit as intense this morning as it was yesterday for the six boats entered in the IB Group Challenge. As the fleet closes in on the coast of Portugal in a SW breeze decreasing to around 10-12 knots. Franck Cammas was in the lead in the small hours of this morning, he will probably not be holding onto his leadership position for that…

    par Gitana

    Racing is every bit as intense this morning as it was yesterday for the six boats entered in the IB Group Challenge. As the fleet closes in on the coast of Portugal in a SW breeze decreasing to around 10-12 knots. Franck Cammas was in the lead in the small hours of this morning, he will probably not be holding onto his leadership position for that much longer. The Desjoyeaux-Bidégorry-Le Peutrec threesome should be the first bunch of boats to be first to make it to the Cape of Saint Vincent by the end of this afternoon.

    The advantage gained by Franck Cammas in his shore-hugging option was short-lived. As the wind shifted from S to SW, following the passage of a violent stormy front, the pack is starting to distance Cammas. The choice to put some west into the heading after Cape Finisterre has turned out to be the right option. Michel Desjoyeaux and Pascal Bidégorry have come off best, with Frédéric Le Peutrec not far behind. The low pressure system west of the Iberian peninsula has not moved a great deal over the last 24 hours. The best thing to do was to head out in search of the shift in wind direction on the open sea, rather than to wait for the wind to come. With the exception of Groupama-2, that was precisely the option taken by the whole fleet. This morning, Groupama-2 is highly likely to find herself way down the line. She will have to sail much closer to the wind which will slow the trimaran down, forcing her to head out away from the coast, thereby losing a great deal of ground. The first place certainly, but she should be able to make it back to fourth if everything goes well, failing which sixth. A heavy price to pay ! But all in all the boats are sailing at close quarters. At the end of the day, not perhaps such a significant loss.

    A lively night for the Gitana Team, an active stormy front giving rise to lightning, thunder, heavy rainfall and brisk changes in wind direction with violent gusts. Enough to keep the guys on board busy up on deck.  « Before the sun went down, the storm passed overhead. It was impressive to see the shades of black and grey mixed up with tones of white all at the same time. Heavy dense rain, lightning and thunder to boot. Quite a festival and tough context for effective decision making. Wind, lots of wind, then suddenly no wind at all. Apart from a brief spell with a 15 knot wind, there was basically no wind at all. UP went the Code 0, one change of tack followed another, plenty to keep us busy. » Nicolas Raynaud, Gitana X par e-mail.

    The gaps between the boats were very small one and a half days into the race. The entry into the Mediterranean is going to be important. That is the event to watch out for tonight. « We are still in the match and the gaps between the boats are not that great even though Géant took a fifty mile advantage last night in spite of our being quite close. We had a tough time pulling through the squalls. We got stuck under a cloud. But the whole fleet will be together around Gibraltar. This morning we have a 10 knot SW and are sailing at 80° to the wind making 17-20 knots on fine seas. Not ideal conditions for the boat but she is certainly much better than last year. We are in the pace and managing our sleep pretty well. The breeze should drop off as we approach the Cape of Saint Vincent in a five knot wind as we enter the Bay of Cadix, where we will be downwind in light air. Tough going off Gibraltar ! » Erwan Le Roux, on Gitana X this Tuesday morning.

    Rankings on Tuesday 10th May at 4h00 (French time) :

    1-Groupama-2 (Franck Cammas)  1 944.4 m to the finish

    2-Banque Populaire (Pascal Bidégorry) + 2.4 miles

    3-Géant (Michel Desjoyeaux) + 3.2 miles

    4-Gitana 11 (Frédéric Le Peutrec) + 26.8 miles

    5-Gitana X (Thierry Duprey du Vorsent) + 55,8 miles

    6-Foncia (Armel Le Cléac’h) + 59 miles