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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

    26.05.2006

    Repairs in progress.

    After a very spicy Trophée du Conseil Général des Alpes Maritimes marked by the dismasting of Gitana 12 and the capsize of Banque Populaire IV, it's almost time for the Grand Prix de Trapani in Sicily. The Gitana Team is still hoping to line up its two trimarans under optimum conditions.

    par Gitana

    After a very spicy Trophée du Conseil Général des Alpes Maritimes marked by the dismasting of Gitana 12 and the capsize of Banque Populaire IV, it’s almost time for the Grand Prix de Trapani in Sicily. The Gitana Team is still hoping to line up its two trimarans under optimum conditions.

    The second outing in the Café Ambassador Multi Cup following the London-Alpes Maritimes race, last weekend’s event in Nice did not really give a clear picture of the forces in attendance. With gusts of over thirty-five knots and very rough short seas, the crews had to sail “within themselves” in order to protect the equipment, but in spite of their caution, a host of technical faults still arose. Gitana 12, for example, saw her mast fall as a result of a torn stay (cable which keeps the mast forward) bulkhead, while Pascal Bidégorry capsized in spectacular fashion in a squall. As a result, Gitana 12 was delivered as swiftly as possible to the La Ciotat boatyard for repairs, while Gitana 11 is allowing a strong Mistral to pass before heading for the Sicilian port.

    Thierry Duprey du Vorsent, skipper of Gitana 12:

    “Gitana 12 arrived at La Ciotat on Monday evening and was hauled out by crane on Tuesday morning onto the dry land of the Composites Works site. She will be repaired on site and everything possible is being done to get the trimaran ready for the Grand Prix de Trapani. It’s a bit frenetic as time is severely limited, but the whole Gitana technical team is involved in rebuilding the stay bulkhead and repairing the deck. Everything was arranged from Nice, while the mast is at Lorima in Lorient: the lower section which was ruined between the mast base and the mainsheet rail, a length of about ten metres, is going to be recast, and then grafted onto the upper section, which is intact. The sails have not suffered, nor has the shrouding, with only a few halyards needing to be redone. As the mast fell quite gently to the rear, there was no other damage, but initially, we won’t have the option of reinstalling the hydraulic system and using the mast rake to our advantage (longitudinal angle of the mast). The stay will therefore be fixed but that’s not too prohibitive in terms of performance. We need to move fast as Trapani is still 500 miles away from La Ciotat and delivery will take two days. But it’s still doable…”

    Frédéric Le Peutrec, skipper of Gitana 11:

    “We’re leaving for Trapani on Friday morning as there’s quite a strong Mistral around at the moment. The crew will join the trimaran on Sunday and on Monday morning so we can train on this Sicilian water that none of us really knows that well. As for the weekend of the Trophée du Conseil Général des Alpes Maritimes, let’s just say it’s consigned to the history books! We weren’t able to learn that much in terms of comparisons, except that Gitana 11 seems to bear up quite well in rough conditions. But the circumstances, both on Saturday when we stopped to help the crew of the capsized Banque Populaire IV, and on Sunday when the wind was incessant and our battens broke, were not exactly productive… The boat is going quite fast and well, both downwind and upwind, which is highly encouraging for the rest of the Café Ambassador Multi Cup. Let’s just hope that the sailing conditions in Trapani are more manageable!”

    Café Ambassador Multi Cup rankings

    After the London-Alpes Maritimes race (coefficient 2) and the Trophée du Conseil Général des Alpes Maritimes (coefficient 0.5):
    1-Franck Cammas (Groupama 2): 12.5 points (10+2.5)
    2-Pascal Bidégorry (Banque Populaire IV): 9 points (8+1)
    3-Michel Desjoyeaux (Géant): 8 points (6+2)
    4-Frédéric Le Peutrec (Gitana 11): 5.5 points (4+1.5)
    5-Thierry Duprey du Vorsent (Gitana 12): 2.5 points (2+0.5)