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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

    27.08.2008

    Indian cogitations.

    With yesterday enabling 191 miles to be covered, morale was given a real boost for the troops aboard Gitana 13. Down but not beaten, Lionel Lemonchois' men knew they would just have to endure the situation before they could extract themselves from the zones of calm lined up along their course. On the pace again now, working harder than ever, the ma…

    par Gitana

    With yesterday enabling 191 miles to be covered, morale was given a real boost for the troops aboard Gitana 13. Down but not beaten, Lionel Lemonchois’ men knew they would just have to endure the situation before they could extract themselves from the zones of calm lined up along their course. On the pace again now, working harder than ever, the maxi-catamaran in the colours of the LCF Rothschild Group is continuing its ‘Way of the Cross’ towards the Cape of Good Hope. However, the renewed activity in no way means that the skies have cleared ahead of Gitana 13’s bows.

    Dominic Vittet, the quickest to pick up the iridium handset this morning, discussed the reduced pace endured by the maxi-catamaran yesterday: “We are happy to have found some wind again after this long spell of calm which was totally unexpected and irritating. These shifty, erratic winds can be par for the course in the squalls of the tradewind, even though we naturally hope never to come across them”.  

    At sea it is essential that you adapt your strategy to the evolutions in the weather conditions. That’s why Lionel Lemonchois and his crew have changed their shoulder rifle, instead favouring a slightly more N’ly route than planned in order to make the African coast: “Initially we were hoping to adopt a direct course towards the south and the Cape of Good Hope but the latest wind forecasts show W to SW’ly winds to the south of the great circle route (direct route) and calms along the course. Given these observations, a northward passage appears to us to be more beneficial so as to keep hold of the favourable winds” explained the onboard navigator.

    However, an even more important point about this approach towards the African coast, which concerns the onboard tacticians today, is the Cape of Good Hope. Indeed, the southern tip of Africa doesn’t seem to want to play ball: “To round the Cape of Good Hope from east to west is one of the most difficult stages in our course and long before the departure, we knew this may be a difficult moment to deal with. For the past 48 hours, the weather has proven us right since the situation is deteriorating. A big low is forming between 31st August and 1st September and for the time being, it’s preventing us from rounding!”

    To find solutions to this situation, there have been frequent exchanges between Sylvain Mondon, the onshore weather router for Gitana Team, and Dominic Vittet: analysis of the wind and wave charts, updating and adjustment of the strategy… The two men are joining forces to determine the best point to make their entrance into the southern Atlantic. In the meantime the maxi-catamaran in the colours of the LCF Rothschild Group is having to continue westwards. Positioned 1,200 miles from the coast of South Africa this morning, Lionel Lemonchois and his men are still aiming for Port Elizabeth, on the SE tip: “The problem we have to deal with today is to try to make as much southing as possible, without dropping down too far in relation to the storm which is forecast. For the time being we have opted to aim for Port Elizabeth, which we should reach on Saturday 30th August” added Dominic Vittet.

    On this 13th day at sea, Gitana 13 has got back into the familiar routine of racking up an average of over 20 knots of boat speed. The maxi-catamaran equipped by Baron Benjamin de Rothcshild should be able to keep up this pace until tonight because the wind is set to begin to ease as it heads, as they pass over 250 miles from the southern tip of Madagascar.

    A few figures
    Gitana 13 left Hong Kong on Thursday 14th August at 07h55’32” (UT)
    On Wednesday 27th August at 07h45 (UT), Gitana 13 was sailing at 27°44.33 S / 53°17.40

    Watch No1: Lionel Lemonchois (Skipper / watch leader / helmsman) / Olivier Wroczynski (trimmer /head of computers and power)  / David Boileau (Bowman /  head of deck fittings)

    Watch No.2: Ludovic Aglaor (watch leader / helmsman) / Laurent Mermod (trimmer) / Ronan Le Goff (Bowman)

    Watch No.3: Pascal Blouin (Watch leader / helmsman) / Ronan Guérin (trimmer) / Léopold Lucet (No.1, head of supplies and doctor)

    Outside the watch system: Dominic Vittet (navigator)