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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

    19.04.2007

    Finish of Domaine du Mont d’Arbois.

    Thierry Duprey du Vorsent crossed the BPE Trophy finish line on Thursday 19 April at 11:44 (French time), after 24 days, 22 hours and 44 minutes of an intense race that has been a steep learning curve. Domaine du Mont d'Arbois came 22nd in the final classification, 3 days, 13 hours, 32 minutes and 15 seconds behind the winner, Nicolas Troussel.

    par Gitana

    Thierry Duprey du Vorsent crossed the BPE Trophy finish line on Thursday 19 April at 11:44 (French time), after 24 days, 22 hours and 44 minutes of an intense race that has been a steep learning curve. Domaine du Mont d’Arbois came 22nd in the final classification, 3 days, 13 hours, 32 minutes and 15 seconds behind the winner, Nicolas Troussel.

    After having been consistently among the leading four in the early part of the race, the Gitana Team skipper fell prey to unstable and difficult weather conditions. Today, at the end of his first-ever Figaro race, Thierry Duprey du Vorsent is starting to draw some initial lessons from this experience.

    Selected snippets…

    On the race: “That was my longest transet ever! I don’t think I’ve ever spent so much time on the Ocean. The absence of wind is definitely a sailor’s worst enemy! But first and foremost, what I’ll take out of this experience is how I was right up there for the first 15 days, not only where the classification was concerned but also in terms of speed, which is really important for me. I didn’t get left behind at all. In the end, it wasn’t to be but even now, I don’t really see how, with the information I had available, I could have anticipated that ridge of high pressure coming down so low!”

    On the boat: “What surprised me the most was the lack of activity on board, especially when there’s no wind. You just have to take it on the chin and sit tight. I used the automatic pilot a lot so I could concentrate on making all the different adjustments.”

    On lessons learned: “Physically, it’s not a demanding boat and is much easier to manoeuvre than a multihull, although they’re a bit of an extreme example! But from the psychological angle, I have to say that these last ten days have been really testing for me and I don’t yet have the necessary hindsight to review my race properly and analyse the different situations I was faced with. That’s why I’ve decided to go and see Sylvain Mondon (ed’s note: Météo France) with all my course data and the weather info I received on board. We’ll go over my race from start to finish to try and understand where I might have gone wrong! It’s the best way of trying to prevent something similar happening again.”

    On the finish: “I used my final hours at sea to clean and tidy the boat. Ironically, the wind picked up again right at the finish. It’s always nice to set foot on dry land again, especially after 24 days at sea! My thoughts have been with everyone who has supported me in this adventure and I’d like to thank the boat’s owner, Baron Benjamin de Rothschild, as well as my partner, Domaine du Mont d’Arbois, who supported me right to the end!”