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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

    08.07.2005

    Gitana 11 qualifies.

    Frédéric Le Peutrec and Yann Guichard have completed their qualifying passage on the Gitana 11 trimaran for the two-handed transatlantic Jacques Vabre race due to start from Le Havre and bound for Salvador de Bahia (Brazil). Having set out from La Ciotat last week and having now rallied La Trinité sur Mer, the boat came across a wide range of weath…

    par Gitana

    Frédéric Le Peutrec and Yann Guichard have completed their qualifying passage on the Gitana 11 trimaran for the two-handed transatlantic Jacques Vabre race due to start from Le Havre and bound for Salvador de Bahia (Brazil). Having set out from La Ciotat last week and having now rallied La Trinité sur Mer, the boat came across a wide range of weather conditions.

    The Transat Jacques Vabre 2005 is one of the highlights in the 2005 season. It is run every odd year over a tough course where the fleet encounters the effects of the Channel as it leaves Le Havre, followed by the Bay of Biscay as far as Cape Finisterre, avoiding the major autumn low pressure systems down to the Canary Islands before latching onto the trade winds which propel them over to the Cape Verde Islands. But the race is not over yet as the fleet still has to get through the Inter-tropical Convergence Zone, also known as the Doldrums, hence the expression « in the doldrums ». As the fleet exits that zone, it will be in search of the trade winds but which will this time be head winds over to the coast of Brazil.
    In order to qualify, the teams have to sail a passage of at least 1,500 miles on their boat. Frédéric Le Peutrec and Yann Guichard had to bring Gitana 11 back to the Atlantic anyway after the start of the season in the Mediterranean. Other teams have done likewise, using the return passage as a means of validating their Jacques Vabre entry.

    ITV with Frédéric Le Peutrec :

    « This was tough from a weather point of view – complicated but interesting. We identified one or two minor improvements to be made to deck layout for sailing her two-handed. We ran into a whole range of weather conditions. Upwind, close-hauled, light air, medium wind and a healthy breeze. We had 35 knots off the southern tip of Spain, the Cape Saint Vincent with a rather rough sea. It was good to be in a boat which is as uncomfortable as a trimaran to get used to blue water sailing once again, two-handed. After two months racing on calm seas, this has bucked our ideas up. 
    As it turned out, we took seven days, which is quite long in fact, but our stay sail blew out and the mainsail ripped on a level with the third reef. All the way up the coast of Portugal, we had shortened sail. But in the space of a week, we had the opportunity to make a trial run of what we will be going through in the fortnight long race in November. 
    Yann and I also spent a bit of time working on manœuvres to find out when we will both be needed. There are certain occasions when one of us will need to stay at the helm. We tried out all of the sails ! We had to be highly reactive as we were sailing along the coast with cargo vessels all over the place. We made it to La Trinité sur Mer on Tuesday night and will be setting out for the Grand Prix de Galice on Saturday. But a little bit of work needs to be done on the lines and sails before we getting underway. 
    We’ll be doing a couple of two-handed sessions after Douarnenez but once we get back from Vigo, I think I’ll do a few solo stints, a sort of revision session before the Route du Rhum ! »