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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

    08.06.2004

    Out of the cold.

    Although the temperatures are far from reaching recent temperatures back home in France over the last few days, at last Fred Le Peutrec can take advantage of easier-going conditions than he has had over the past week or so. With 700 miles to go before the finish, this morning, Gitana 11 came out of a ridge of high pressure and picked up speed, and…

    par Gitana

    Although the temperatures are far from reaching recent temperatures back home in France over the last few days, at last Fred Le Peutrec can take advantage of easier-going conditions than he has had over the past week or so. With 700 miles to go before the finish, this morning, Gitana 11 came out of a ridge of high pressure and picked up speed, and is now riding on a low pressure system.

    So the fourth perturbation is on its way. This time though, the climatic conditions are a little closer to those generally expected in the month of June, with sea temperature now above 10°C  thanks to the Gulf Stream. Air temperature is not far off 15° around lunch time, with a breeze gradually veering SE during the day, strengthening to 15-20 knots, and visibility has improved compared to that at the start in Plymouth eight days ago (already !) when the weather was particularly dismal.

    Just like his competitors, Fred has had to contend with bitter cold conditions, transforming the slightest breeze into a Siberian blizzard. When winds increased to more than 45 knots, when he had to sail close to the waters where icebergs abound, when he had to manoeuvre up on the foredeck with waves crashing down on him, the skipper of Gitana 11 suffered and was extremely tired. After a week with an average of 3-4 hours’ sleep a day, in stretches of half an hour, the body is put under pressure. Not to mention the shaken moral and the stress of the damaged Solent jib which not only handicap the trimaran’s in terms of pure speed, but which also change the face of the race for Fred. Now that the banks of Newfoundland are astern Gitana 11,  Fred Le Peutrec can look forward to finishing the race in less arduous conditions. A new low pressure system is coming his way and will be upon him by midday today. However the trimaran will be able to pass north of the system, giving beam winds and easier sailing under gennaker and un-reefed mainsail. Further, he will have the sheer pleasure of helming a boat which will be flying along at speeds of close on 25 knots ! This should propel him along the coast of Maine before hitting another short-lived zone of light air on Wednesday morning, which will finally be veering SW, followed by head winds down to Halifax in Nova Scotia. The situation is not quite so clear for the end of the race but in any event, the bad weather is over and done with. Finishing this course on a northern approach, with one or two passages between ridges of high pressure and minimum low pressure zones, Gitana 11 still might find it possible to gain ground and come back on Philippe Monnet and Lalou Roucayrol. Never the less, the trimaran’s Solent jib is out of action, having been ripped to shreds, and will penalise the boat in light air head to wind. In the meantime, Fred has been able to gain strength overnight in the ridge of high pressure and will be able to put his foot down in the three days to come. He should be crossing the Boston finishing line this Friday.

    The major problems which the monohulls had on Monday, have fortunately turned out not to have caused any harm for the skippers. Olivier de Kersauson motor trimaran in making way towards the dis-masted PRB, and Bernard Stamm, who has had to abandon his capsized yacht, is now on a fishing patrol vessel by the name of Jean Charcot. Lastly, Michel Desjoyeaux (Géant) is expected into Boston this evening and all being well should win his first English transat, ahead of Thomas Coville (Sodebo) and Franck Cammas (Groupama), the gaps between the three boats having remained fairly stable for the past couple of days. A tough fight is on however for fourth place with three trimarans fighting tooth and nail : Alain Gautier (Foncia), Karine Fauconnier (Sergio Tacchini) and Giovanni Soldini (TIM-Projetto Italia) which are within thirty miles of each other.