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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

    31.10.2010

    Quick exit.

    The start of the ninth Route du Rhum-La Banque Postale will be given at 1302 hrs off the Pointe du Grouin, in what will be perfect sailing conditions: an E’ly breeze of around ten knots, flat seas, a small tidal coefficient and the tide just on the ebb. Gitana 11 should be able to fully benefit from this situation to extract herself as quickly as p…

    par Gitana

    The start of the ninth Route du Rhum-La Banque Postale will be given at 1302 hrs off the Pointe du Grouin, in what will be perfect sailing conditions: an E’ly breeze of around ten knots, flat seas, a small tidal coefficient and the tide just on the ebb. Gitana 11 should be able to fully benefit from this situation to extract herself as quickly as possible from the huge fleet, which was gradually making towards the race zone this Sunday morning.
    85 race yachts then, but above all hundreds of other craft of all kinds, from the traditional rigs like the Recouvrance or the local Bisquine sailboats, to the huge ferry, the Pont-Aven, from where the start gun will be fired, alongside a throng of pleasure boats and ribs. Indeed it was an impressive armada which exited the locks of Saint Malo, from the marina in Saint Servan, as well as moorings in the Rance, Cancale and as far as Saint Quay-Portieux! Gitana 11, which spent the night at the mooring off Dinard, cast off at 1000 hours to enter the outward channel in the company of the other competitors, some of which were already hoisting their sails.
     
    On flat seas under an overcast albeit clearing sky, pushed along by an E’ly breeze of around ten knots, Yann Guichard accompanied by the crew from the Gitana Team for the final manœuvres prior to the start, should be particularly at ease in these moderate downwind conditions. The trimaran fitted out by Baron Benjamin de Rothschild is especially fond of these light conditions, which will enable her to quickly get away from the coast to exit the English Channel…