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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

    14.11.2005

    Yo-yo in the trimaran fleet.

    The rankings in the Transat Jacques Vabre are changing all the time at the moment since the first trimarans entered into the Doldrums. The zone is by no means a highway to success – although the wind is very unstable, the Inter-tropical Convergence Zone is not as virulent as forecast. The Italian competitor capsized this morning due to a helming mi…

    par Gitana

    The rankings in the Transat Jacques Vabre are changing all the time at the moment since the first trimarans entered into the Doldrums. The zone is by no means a highway to success – although the wind is very unstable, the Inter-tropical Convergence Zone is not as virulent as forecast. The Italian competitor capsized this morning due to a helming mistake.

    At 6h15 today, Monday morning, TIM-Progetto Italia notified Race HQ based at TF1 in Paris that she had capsized. Giovanni Soldini and Vittorio Malingri did not activate their distress beacon as they are perfectly okay. Their shore crew is now trying to charter a boat to tow them to Africa. Located some 400 miles SW of Dakar, the trimaran has not sustained any damage and the crew can wait a few days for their team to arrive without there being any reason to worry. The sea is calm and warm and they have everything they need to survive without any immediate need for outside assistance.

    Gitana X is continuing to hug the African coast, sailing down the coast of Mauritania and probably aiming to pass close to Dakar. As for the three boats approaching the Gulf of Guinea, the exit from the Doldrums is imminent. Speeds over the last few hours indicate that there is wind in the sector but that it is moderate and unsteady, but easterly. Banque Populaire has taken command of the controls by curving slowly her track to put a little east in her heading, thereby marking Géant who has preferred to distance herself a little further (20 miles) out to sea, whereas Gitana 11 really had no choice but to gybe last night to come back into the match and particularly to circumvent a new zone of calm beneath Guinea. 
    It still looks as though exiting to windward when the SE trade winds start to blow (which should be happening around this afternoon) is the right option, but the duos have to make do with what is dished up. Winds shift all the time, but teams have just one idea in mind – steering a course as close as possible to Ascension Island. Not that easy when the wind is changing from 90° to due north and from 180° to south-east. All in a context where wind speeds change vary all the time from 5 to 20 knots. It is highly likely that the gaps on the Equator will not be that great and that the long beat to windward in the SE trade winds will split the leading threesome. They’ll have to take care not to break everything they’ve got to sail down on one tack, a tack of nearly 900 miles!
    All are seeking to gain in the SE to approach the southern hemisphere trade winds with the best wind angle possible. Although Frédéric Le Peutrec and Yann Guichard lost their leadership overnight to Banque Populaire, Gitana 11 should be well-positioned at slightly more than one hundred miles over to the east in relation to the leader. When racing, you always have to keep one step ahead and the tandem on the blue trimaran seems to have perfectly anticipated the change in the wind system ahead. 

    Rankings at 10h00 on Monday:

    1-Banque Populaire: 2360 miles to the finish
    2-Géant: 24 miles from the leader
    3-Gitana 11: 40 miles from the leader
    4-Gitana X: 610 miles from the leader