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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

    09.09.2005

    Difficult kick-off.

    The Gitana Team was not on top form on Friday in Fécamp. The first round was run in light air, not at all the type of weather appreciated by the team's trimarans, which are conceived for medium to strong conditions. Gitana 11 took a penalty on the second course. In spite of it all, Frédéric Le Peutrec took third in the last race of the day.

    par Gitana

    The Gitana Team was not on top form on Friday in Fécamp. The first round was run in light air, not at all the type of weather appreciated by the team’s trimarans, which are conceived for medium to strong conditions. Gitana 11 took a penalty on the second course. In spite of it all, Frédéric Le Peutrec took third in the last race of the day.

    There are good days and bad days. Friday was not a good day for Gitana. The first race was run in a feeble 5-8 knot westerly winds against a strong incoming tide on the legs raced head to wind. Frédéric Le Peutrec managed to get off to a good start, blocking Michel Desjoyeaux at the committee boat with Franck Cammas to leeward. Along the cliffs in Fécamp, the breeze was a little more favourable and Foncia came off best. Groupama-2 did not do too badly at all either – she is always at ease in light air. Franck Cammas broke away at the first windward mark, with Gitana 11 fighting hard against Armel Le Cléac’h and Pascal Bidégorry. In spite of the odd tactical trick here and there, the outcome was uncertain as to which of the three would take second. Frédéric Le Peutrec lost out by just a few lengths and Thierry Duprey du Vorsent followed up the rear with Michel Desjoyeaux after having made a bad start.
    The second round was run in a steady breeze. A 12-15 knot westerly, quite favourable for Gitana 11 racing at close quarters with Foncia, leading the fleet, and Groupama-2 and Géant. Down the ranks, Banque Populaire took a penalty for an erroneous tack, leaving the way open for Gitana X. As the fleet rounded the second windward mark, Gitana 11 struck the mark, carried by the strong current and had to take a 360° penalty turn. A heavy price was paid for this mistake – she finished last behind Gitana X…
    The very last round of the day marked the comeback of the « eleven » to the top places although there was really not that much air at all – not generally the sort of conditions which suit Gitana 11… But Frédéric Le Peutrec and his crew made excellent use of the shifting winds and the currents to finish off Géant’s transom, with Groupama-2 winning the windward leeward course once again. 

    Frédéric Le Peutrec (Gitana 11):

    « A tough day for us. We messed up a situation which we really ought to have handled differently. We tacked too late on the first upwind section. That left us behind a little and then we were sluggish on the run downwind. In the second round, we decided to move a little further to windward at the start to avoid the cliffs but as it turned out, it all happened underneath and afterwards when we touched the mark, the wind from the helicopter made us muck up our penalty altogether. By then we were well and truly out of it!
    To conclude, we did not do too badly on the last course finishing behind Géant. With a little cause for concern when the wind dropped as Gitana 11 is not at ease in light air. In terms of points, the result is not that brilliant but it’s not dramatic either, even if Groupama-2 set off like a canon in Fécamp! I’m keeping my eyes on Foncia but this is early days yet. It could have been a good day so we’ve still got work to do… »

    Provisional rankings in the Grand Prix du port de Fécamp (results over three rounds):

    1- Franck Cammas – Groupama-2 (1+1+1) 3 points
    2- Armel Le Cléac’h – Foncia (2+2+4) 8 points
    3- Michel Desjoyeaux – Géant (5+3+2) 10 points
    4- Pascal Bidegorry – Banque Populaire (3+4+5) 12 points
    5- Frédéric Le Peutrec – Gitana 11 (4+6+3) 13 points
    6- Thierry Duprey du Vorsent – Gitana X (6+5+6) 17 points