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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

    15.11.2005

    Downwards towards Ascension.

    Change of gear to sail down to Ascension Island. Gitana 11's African option now means that she is sailing head to wind in SE winds. Close-hauled with changes of tack to negotiate to take advantage of wind shifts in what are still unsteady trade winds. As for Gitana X, she is about to enter the Doldrums any time now, she too is positioned rather far…

    par Gitana

    Change of gear to sail down to Ascension Island. Gitana 11’s African option now means that she is sailing head to wind in SE winds. Close-hauled with changes of tack to negotiate to take advantage of wind shifts in what are still unsteady trade winds. As for Gitana X, she is about to enter the Doldrums any time now, she too is positioned rather far east.

    After having been a three-boat battle for a while, the Transat Jacques Vabre has become a duel. Banque Populaire has gone over to the coast of Africa in search of her opponent Gitana 11 – and found her ! BY midday today, Tuesday, only 40 miles separated the two trimarans, racing almost in sight of each other. Each will be looking to make as fast a getaway as possible as a squall passes overhead or when the wind shifts, which can be used to change tack and gain ground in an easterly direction. Ascension Island, located 8° south by 14°20 west is still quite some distance off yet – 650 miles in fact. Quite a distance to cover changing tack all the while against the SE trades which are gaining in strength as the boats head south east.  Winds will gradually increase to 20 and then to 25 knots. Seas will be short. The fleet will have to strike the right balance between speed and heading whilst preserving the gear so as not to fatigue rig, sails and structures. The guys driving the machines will not be able to take a back seat either. Two days in a shaker, near-continuous sea spray, heavy skies and a very humid atmosphere.  Up on deck, there is no letting up, the skippers get a permanent shower. Down below, the heat is stifling. Ascension Island only comes to those who deserve it, a sort of Himalayan peak.

    In any event, Frédéric Le Peutrec and Yann Guichard are now able to play an offensive role. Just two hours behind the leaders, and with five days of racing still to go, the gap is insignificant. All the more so when you bear in mind that Gitana 11 is a redoubtable machine in a blow, particularly upwind and reaching, as demonstrated in Grand Prix events this year. And when you consider that Frédéric and Yann have an Olympic background with exceptional helming skills and a finely-honed sense of tactics when competing at close quarters. 

    As for Thierry Duprey du Vorsent and Erwan Le Roux, they have not yet latched onto the traces of the Doldrums. A few tens of miles from the coast of Senegal, Gitana X has also opted for an inside route, a shortcut to gain a few miles down the coast of Africa. This option is a little risky as the trimaran may find herself being subject to the side effects of the Doldrums a little longer than the leaders, but it is a wise decision in their attempt to close the gap after having made pitstops in Porto and then in Lanzarote for repairs. In view of what has happened out on the course over the last couple of days, nothing is certain for the time being. 

    Yann Guichard (Gitana 11) at 5h00 on Tuesday morning :

    « Brilliant. We came free of the Doldrums overnight and the boat is in tip top condition. So are we come to think of it, even if we are a little tired. We’re already in the S/SE trade winds and the sea is a bit choppy. We haven’t seen the sun for two days and tonight was magnificent with a  full moon paving the route ahead ! It looks as though our inland option was the right one. After having lagged 200 miles behind at the Cape Verde islands, we have now reduced that gap to just 40 miles. We’re having to drink gallons of water to avoid dehydrating. I reckon we are in quite a favourable position, particularly compared to Géant who is more than 100 miles to leeward (west). Boat speed is good and we’ve been marking Gitana 11. Everything is fine. We’re going to have to be careful to maintain our lateral distance to be able to head downwards to Ascension. »