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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

    03.12.2008

    At the gateway to the Indian Ocean!.

    Whilst the leaders of the Vendée Globe 2008-2009 are currently making towards the first ‘Atlantic' ice gate, the front that the head of the fleet has been negotiating over recent hours has passed. The ‘calm' sailing on a single tack is behind them and the solo sailors are gradually getting into the gybing. The fatigue, brought about through a strug…

    par Gitana

    Whilst the leaders of the Vendée Globe 2008-2009 are currently making towards the first ‘Atlantic’ ice gate, the front that the head of the fleet has been negotiating over recent hours has passed. The ‘calm’ sailing on a single tack is behind them and the solo sailors are gradually getting into the gybing. The fatigue, brought about through a struggle with a gennaker that had gone over the side, is now over and Loïck Peyron is in great shape again aboard Gitana Eighty, thanks to some precious blocks of sleep. The skipper of the monohull in the colours of the LCF Rothschild Group is still in fourth position and on the attack, which is just as well given the upcoming programme…

    A few rays of sunshine, 20 knots of downwind conditions, an average boat speed of 15 knots… this is today’s scene as described to his shore crew by a more rested Loïck Peyron: “I’ve slept well even though we had some swell last night, which wasn’t ideal in terms of the noise. I was entitled to some sun this morning and for the past few hours the southern sky has clouded over a little. Gitana Eighty is performing some interesting surfs at times. I’m enjoying slipping along again”. Into the groove, perfectly concentrated on the smooth running of his steed and his own recuperation, the skipper from La Baule is on the outskirts of the Atlantic ice gate, situated to the SW of the Cape of Good Hope, and the first safety measure imposed by the organisers of the Vendée Globe. “I’m going to put in some tacks in order to pass through the gate. This compulsory passage doesn’t make any difference strategically. As we couldn’t make it on a single tack, even without a gate, our trajectory would have been pretty similar in any case.”

    Though this gate is the first the competitors are having to face, others will follow and the precise position of each of them will of course be adapted according to the data transmitted to the organisers by CLS Argos. Indeed, this is the case right now for the next passage mark, the Kerguelen ice gate, which has just been moved around 130 miles further north and 600 miles further west in relation to its original position, so as to avoid a zone where the presence of ice has been indicated. Although this information will upset the trajectories of the solo sailors a little, it has been well-assimilated by all the competitors, including Loïck Peyron: “It’s not such a bad thing that the organisation has taken this decision. The principle of an ice gate is to avoid all the ice. I’m happy to see that this is actually the case. It’s geared towards everyone’s safety and it won’t affect the sporting nature of the competition!”

    For the time being, the focus is on the first mark, which will only just precede the competitors’ entry into the Indian Ocean. With it they will leave the Atlantic in their wake and won’t return there for a few weeks, once they’ve sailed around Antarctica. This is no time for contemplation at the heart of the fleet though, as the future menu appears to be packed full and rather copious… In fact the first gale is already in sight; a phenomenon which is quite normal in these latitudes but will require the utmost vigilance at all times. Indeed, a stormy low originating from Brazil will encounter a cold front level with the roaring forties, which will affect the middle of the fleet at that very point, resulting in some violent winds. Meantime the monohull equipped by Baron Benjamin de Rothschild is likely to have to negotiate this phenomenon midday tomorrow, Thursday, and will be subject to it for 18 hours, through till Friday morning. This system will thus accompany the leaders as far as the new Kerguelen gate. It will involve a 30-40 knot NW’ly wind with gusts of between 50 and 60 knots, according to their position in relation to the system, as well as big seas. In short, it’s the kind of spread which the sailors wouldn’t normally want to wolf down, though Loïck Peyron isn’t quite so sure about that: “I’m going to perform a thorough inspection of the boat prior to this gale, which is a fairly classic phenomenon in this part of the world. I would imagine that everyone will attack this low initially, so as to be able to lengthen their stride a little…” It is worth noting here that the landlord’s tour of inspection before battle commences has not yet included a little climb up the mast to change the gennaker halyard, that Loïck Peyron alluded to yesterday, as conditions haven’t yet been favourable enough.

    In fact there was little change in the rankings at 1600 hours; Sébastien Josse still leading the way ahead of Yann Eliès, who was continuing to gain precious miles on the leader and Jean-Pierre Dick in third. In fourth, Loïck Peyron and Gitana Eighty were 67 miles astern of the British monohull.

    Ranking on 3rd December – 1600 hours (French time)
    1. BT (Sébastien Josse) 18,232.4 miles from the finish
    2. Generali (Yann Eliès) 11.4 miles from the leader
    3. Paprec Virbac (Jean-Pierre Dick) 43.2 miles
    4. Gitana Eighty (Loïck Peyron) 67 miles
    5. Veolia Environnement (Roland Jourdain) 83 miles
    6. PRB (Vincent Riou) 85.7 miles
    (…)