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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

    04.11.2010

    Gitana 11 going all out.

    For his first solo transatlantic, Yann Guichard had already set the bar high by taking the start on the reigning champion multihull after it was lengthened to 23.50 metres compared with the original 18 metres. Since the start in Saint Malo, some four days ago, the 36 year old sailor has shown that he’s a force to be reckoned with in this ninth edit…

    par Gitana

    For his first solo transatlantic, Yann Guichard had already set the bar high by taking the start on the reigning champion multihull after it was lengthened to 23.50 metres compared with the original 18 metres. Since the start in Saint Malo, some four days ago, the 36 year old sailor has shown that he’s a force to be reckoned with in this ninth edition of the Route du Rhum-La Banque Postale. Fourth yesterday evening, the maxi-trimaran fitted out by Baron Benjamin de Rothschild had moved up to second position in the fleet at the first of today’s rankings. However, lines of squalls reminded the skipper of the hard law dictated by meteorological vagaries. Powered up again now, these impromptu pauses have done nothing to quell the determination of the skipper of Gitana 11.

    There are certain parameters which cannot be controlled at sea, as is the case with this band of stormy clouds coming in from the Canaries, which were sweeping across the South of the Azores late last night leading to zones without wind! This explains the worrying drop in speed to 2.2 knots recorded by Gitana 11 at the 0700 GMT ranking this Thursday 4th November. The outcome was tough as Yann Guichard remained at a reduced speed – making an average of just two knots – while Francis Joyon, only a short distance away, was continuing his course at over twenty knots… The upshot of this was that the solo sailor lost nearly fifty miles on his rival, after managing to get the better of the round the world record man on the Wednesday. Contacted by the Press HQ in Paris, Yann Guichard simply recounted the spell of bad luck he’d had: “I’m battling, but things are ok… I got caught in some stormy squalls which came out of nowhere. That’s how it goes sometimes: there was no wind beneath them! There was no indication of any storms coming in from the South. I’m not yet clear of the zone either… Since the start, the wind hasn’t been steady and the automatic pilot is finding it hard to keep up. As a result I’m very often having to helm. The same is true for Francis Joyon though.” Fortunately Gitana 11 managed to get back up to ‘cruising speed’ during the course of the morning, and the noon ranking showed that Idec hadn’t been spared of this stormy zone either. Indeed, at that time, Francis Joyon was making laboured headway at an average of ten knots.

    The only one to favour the N’ly course, following Sidney Gavignet’s retirement from the race yesterday evening after the trimaran suffered major damage with the breakage of her forward beam, Thomas Coville found himself in a very different environment today. The skipper from La Trinité in SW Brittany, had already traversed the cold front which Yann Guichard is likely to reach tonight. After four days of racing, the situation is very open, even though Franck Cammas is continuing to make good his escape, making it increasingly difficult for his pursuers to make a comeback.

    That said though, the West Indies are still 2,000 miles ahead and the weather situation promises to be extremely confused for the last three days of the race. In any case, the trimaran fitted out by Baron Benjamin de Rothschild has demonstrated in the hands of Yann Guichard, that she was worthy of her status of outsider. Indeed, since setting out from Saint Malo, the pace set by the skipper has been very high! Of course the fatigue is beginning to sting, but the solo sailor should be able to recuperate a little over the coming hours in a slightly more established S’ly breeze. In fact, once through the front, it will be necessary to deal with very rough seas and downwind conditions once more, which are set to build later. The next 24 hours promise to be intense, as the skipper of Gitana Team indicated this morning: “I’m still in the SE’ly tradewinds and I’m going to hunt down a depression which is ahead of me. I’ll have to put in a long port tack. Groupama 3 has constantly been faster since the start and it’ll take something pretty big to get back within reach of her. I’m going to have to keep an eye on Thomas Coville, to the North, as he’ll soon pass through the front and will then pick up pace, even though he’ll have to deal with heavy seas. The battle for me at the moment is with Francis. However, there are still at least four days at sea to go so I’m not focusing on the ranking. I’m concentrating on my own race and we’ll see what’s what at the finish…”

     
    Ranking for the Ultimate Category on 4th November at 1500 GMT
    1- Groupama 3 some 1,771.9 miles from the finish
    2- Sodebo 346.4 miles astern
    3- Gitana 11 some 356.6 miles astern
    4- Idec 372.3 miles behind the leader
    5- La Boite à Pizza 684.9 miles astern
    6- Défi Cancale 953.4 miles astern
    7- Saint-Malo 2015 some 995.1 miles astern
    Retirement – Côte d’Or II
    Retirement Oman Air Majan