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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

    16.11.2005

    Breaking the waves.

    Gitana 11 are currently sailing a stretch which is not the most pleasant for this type of boat! Currently lying more than 300 miles as the crow flies from Ascension Island, it will take them up to Thursday lunchtime morning at the earliest before they can progress on a more comfortable point of sail. Gitana X was pipped at the post in the Doldrums.…

    par Gitana

    Gitana 11 are currently sailing a stretch which is not the most pleasant for this type of boat! Currently lying more than 300 miles as the crow flies from Ascension Island, it will take them up to Thursday lunchtime morning at the earliest before they can progress on a more comfortable point of sail. Gitana X was pipped at the post in the Doldrums. She has a tough day ahead of her too before reaching the southern hemisphere trade winds.

    Sailing head to wind can sometimes be fun but never that much fun for long. It is even less pleasant when the sea is short, the wind is steady and the sea freezing cold. Frédéric Le Peutrec and Yann Guichard have nothing to complain about on that score. It’s the opposite really. They are in stifling equatorial heat which also takes its toll on one’s physical shape. The trimaran is pile driving through the ocean, the rig shudders each time the boat comes into contact with the sea and the guys on board have to resist the shock as each wave sweeps past, sending packets of spray across the deck, further marking the expressions on already salt-stained faces. Not to mention the flying fish whistling past the helmsman! An idyllic décor under the tropics but another kettle of fish for those in the full throes of a yacht race.
    Gitana 11 did not manage to gain ground on the leader Banque Populaire overnight as the pair Bidégorry-Lemonchois used the situation to their advantage to offset their position ahead of Frédéric Le Peutrec and Yann Guichard. The difference in relation to Ascension Island is not that great, just 60 miles or so, but it is going to be tough to make up that loss before reaching the famous island. Afterwards, there remain some 1400 miles to run downwind, a fast point of sail and one which suits the blue trimaran. On the other hand, Géant has once again lost ground on Gitana 11 which is still reaping the benefits of her easterly option. 

    As for Gitana X, the situation is altogether different. Thierry Duprey du Vorsent and Erwan Le Roux are not hoping for one thing, the chance to sail upwind. Paradoxical ! Since Tuesday evening, they’ve been stuck in a zone which is rather too calm for their liking since reaching the Doldrums. That said, they are still making good speed and should never the less be out of trouble as it were by the end of Wednesday afternoon. Gitana X has hugged the coast of Africa since stopping in the Canary Islands but will never the less have managed to gain a hundred miles on the leading threesome!

    Frédéric Le Peutrec (Gitana 11) at midday on Wednesday:

    « As you can no doubt imagine, we’re close-hauled! It makes for a rough ride but we’re doing our best not to stress the gear and not push the boat too hard. We’ve got between 18 to 22 knots and choppy seas. Time to keep a low profile, not push your luck and try to sleep as the end of the race is likely to be pretty lively. After the long climb up to Ascension Island, it is now time to start the long slide downwards towards Bahia. There are two gybes to come and one or two possibilities to do something smart in the last couple of hundred miles.
    If everything goes as expected, Banque Populaire should pass the island roughly five hours head of the rest of the fleet and we will be sailing within sight of Géant. »