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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

    29.03.2007

    Domaine du Mont d’Arbois storms into 2nd place in BPE Trophy.

    With 3 different options – North, West, and South – having presented themselves at the start of the BPE Trophy, Thierry Duprey du Vorsent chose West and a more intermediate route which this morning resulted in him taking up 2nd place in the general ranking.

    par Gitana

    With 3 different options – North, West, and South – having presented themselves at the start of the BPE Trophy, Thierry Duprey du Vorsent chose West and a more intermediate route which this morning resulted in him taking up 2nd place in the general ranking.

    Thierry Duprey du Vorsent is in an attacking position and aims to pass as close as possible to the centre of the anticyclone. In contrast, the group which set off more to the South in order to go around it have extended their route considerably but are benefiting from favourable winds. The skipper knew that if he remained in the wake of the southerly group, he would suffer from a slight speed deficit due to his lack of experience on the circuit, which is why he opted for a more offensive strategy.
     
    Emerging from the anticyclone, the wind will most likely be lighter and Domaine du Mont d’Arbois could well slip back down the ranking. Nonetheless, Thierry Duprey du Vorsent should be gybing while the southerly group are still completing their detour, thereby allowing him to catch up with the rest of the fleet.
     
    The verdict will be delivered in the next 24 to 48 hours…
     
    Thierry Duprey du Vorsent, skipper of Domaine du Mont d’Arbois, in the midday radio chat:
     
    “This second place is really encouraging and pleasing, although I haven’t forgotten that there’s still 2,700 miles to go and everything’s still a long way from being decided. I’m also thinking about my sponsor, the Domaine du Mont d’Arbois, as I know they’ll be following the race closely there. Last night, we had winds of up to 28-35 knots, so I got my first taste of this boat under such conditions: it’s a bit like a submarine, in fact, sometimes going down into the water up to the mast head, which is pretty impressive! To the South, they had to put up with 45-knot squalls. I’m happy to be where I am, as my lack of experience in such conditions could have cost me dear. I’m sleeping an average of 6 to 8 times a day in chunks of 15 to 30 mins, which isn’t too bad and above all helps me to keep my strength up for days ahead! I hope my choice will bear fruit, but it’s like a game of poker… My direct rivals all have an anticyclone to go around, whereas I have less distance to travel but am moving more slowly. We’ll just have to see if they can keep up the pace down there and at the same time hope that this is not a busted flush!”
     
    Alexandre Faix, Manager of the Domaine du Mont d’Arbois, Baron Benjamin de Rothschild’s property at Megève:
     
    “We’re all delighted. The entire Domaine team is following Thierry’s progress closely. Of course we realise there’s still a long way to go, but we hope that Domaine du Mont d’Arbois will show this excellent start was no fluke. The next 48 hours will be crucial! Calling him is difficult as we wouldn’t want to disturb him. I sent him an e-mail yesterday to tell him that even from our perch right up here on Mont Blanc, it’s difficult to see him… but we’re behind him all the way!”