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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

    07.11.2010

    Squall within squall.

    1,000 miles from the finish in Guadeloupe, Yann Guichard is giving his all despite the fatigue which has been accumulating over the past week of highly unstable conditions since leaving Saint Malo. And the zone of calms bathing the Caribbean arc is beginning to slow progress for the top four.

    par Gitana

    1,000 miles from the finish in Guadeloupe, Yann Guichard is giving his all despite the fatigue which has been accumulating over the past week of highly unstable conditions since leaving Saint Malo. And the zone of calms bathing the Caribbean arc is beginning to slow progress for the top four.

    More responsive, Gitana 11 is also more flighty and the zone of squalls hitting the leading multihulls isn’t making things restful for either the bodies or the minds. Indeed the solo sailors are having to remain on permanent watch and have only allowed themselves a few minutes of fragmented sleep over the past two days. And that is exactly where the difficulty lies: how to remain sharp and able to adapt the sails to each passage of a squall whilst taking things easy for a few brief moments, not solely to sleep but also to eat and follow the routing… However Yann Guichard remains 100% alert in this beam breeze which is alternating between light patches with ten knots of wind and gusts of over 30 knots. Right now he’s having to quickly switch between putting reefs in and shaking reefs out of the mainsail to maintain a high pace and claw back the miles on the top trio.

    Stormy instability on the approach to the Caribbean
    “It’s a bit full-on but it’s okay! I have had wind on the beam and big seas since Saturday and there are some fairly violent squalls. Conditions are shifting a great deal and it’s not at all relaxing. I was had by a cloud last night: beneath it the wind went from 5 knots to 43. I put two reefs in the mainsail with the storm jib but it was a bit borderline. The squalls aren’t big and they hit without warning. We can’t see them on the satellite images. To my West, Francis Joyon has also had a hard night as the zone of storms is fairly extensive. I hope to be free of this zone in five to six hours time. It doesn’t seem very stable all the way to the finish, even though there are likely to be fewer squalls. You have to earn your ticket to Guadeloupe! Since the start it hasn’t been at all like the other editions. Almost right the way to the end the situation is going to be very stormy with this E’ly storm surge. Such conditions are really difficult for me and right now, with the wind on the beam and big seas, we’re slamming a great deal. I’m also having to perform a lot of manœuvres so Gitana 11 doesn’t take off when the gusts hit” indicated Yann Guichard this Sunday morning at the radio session with Race HQ.

    The final 1,000 miles
    “There have never been sufficiently stable conditions for me to enjoy a bit of time to myself whilst slipping along. You have to be a warrior! It’s beginning to feel like a long way and I’ll be happy when I get to the point where there are less than 1,000 miles to go” admitted the skipper of Gitana 11.
    As such, in the space of a week, the trimaran fitted out by Baron Benjamin de Rothschild has covered two thirds of the course for the Route du Rhum-La Banque Postale, but it’s these last one thousand miles which promise to be the hardest. This is true because the fatigue is mounting up, because the zone of squalls is due to still be active for several hours, because the wind will ease considerably and even become very light and because Yann Guichard won’t really be able to relax for these last two days at sea: “The race certainly hasn’t moved into the background, but you can’t forget safety. I came close to flipping right over last night though. However, beneath one squall there’s no more than ten knots of breeze and quarter of an hour later there’s 35. I’m continuing to get the boat making headway as best I can without breaking anything. Furthermore, we don’t yet know what conditions we’re going to be dealt for the final sprint… However, even though there’s more stress involved with sailing in these conditions on Gitana 11, I’m very happy with the boat. Just now I’m tired, but like everyone else I’m keen for this reach to calm down so the seas won’t be as big. I will then be able to get a bit of rest as I’ve still got a good two days of racing ahead of me.”

    However, the last few days at sea won’t change much as regards the energy the skipper of Gitana Team will need! The light airs have already begun to disrupt the progress of the two leaders who are now stumbling in the light breeze. The latter will become headwinds, forcing the competitors to tack towards the Caribbean. For Francis Joyon and Yann Guichard, the zone of storms is still very much a reality and it probably won’t be until Monday morning that the sailing conditions will become more manageable. As such uncertainty is set to colour this final sprint which is likely to be rather ponderous. The four solo sailors leading the ‘ultimate’ class won’t be spared until the finish.

    Ranking for the Ultimate Category on 7th November at 1500 GMT
    1- Groupama 3 some 474 miles from the finish
    2- Sodebo 193 miles astern
    3- Idec 355 miles astern
    4- Gitana 11 some 578 miles astern
    5- La Boite à Pizza 1,160 miles astern
    6- Saint-Malo 2015 some 1,500 miles astern
    7- Défi Cancale 1,514 miles astern
    Retirement- Côte d’Or II
    Retirement- Oman Air Majan