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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

    29.08.2008

    Awaiting the storm.

    With the week drawing to a close, the crew of Gitana 13 is preparing to tackle the storm which is set to sweep across the tip of South Africa this weekend. There is a mix of apprehension and impatience aboard the maxi-catamaran in the colours of the LCF Rothschild Group. With the primary focus being the safety of his men, Lionel Lemonchois has opte…

    par Gitana

    With the week drawing to a close, the crew of Gitana 13 is preparing to tackle the storm which is set to sweep across the tip of South Africa this weekend. There is a mix of apprehension and impatience aboard the maxi-catamaran in the colours of the LCF Rothschild Group. With the primary focus being the safety of his men, Lionel Lemonchois has opted to take a slightly more N’ly course than planned in order to attempt to minimise the effects and consequences of this strong gale.

    Slipping along beneath Madagascar, bound for the east coast of Africa, the sailors that form Gitana Team have experienced a stormy night, influenced by squalls. In order to adapt to the shifty wind, Lionel Lemonchois’ men had their entire sail wardrobe out last night: from the large to the small gennaker, via the solent and trinquette, then the ORC, which is now in position whilst the mainsail has been reefed… nothing has been forgotten! These incessant changes are synonymous with repeated manœuvres for the crew: “The stand-by watch have been called upon a lot and it hasn’t been uncommon for the whole crew to be on deck. It’s been the most hectic night in terms of manœuvres since we left Hong Kong” confided Dominic Vittet, this morning.

    The background noise was audible during our daytime telephone conversation and still bore witness to the harshness of the elements: “There is about 38 knots of wind and we’re beginning to feel the effects of the SW’ly swell. The forecast descent from the north is very active and we are likely to conserve these conditions until the middle of the afternoon. We’re reaching (wind on the beam), which will enable us to make headway at a fairly correct speed, but the sea isn’t making it easy to slip along. It’s already a little ‘boat-breaking’ added the onboard navigator.

    “It’s quite hard to get a clear idea about what lies in store for us…” said the skipper of Gitana 13 yesterday, confirming the concerns about the weather over recent days. A very big low is taking shape this weekend at the gateway to the Indian Ocean. Indeed the ten sailors aboard the maxi-catamaran equipped by Baron Benjamin de Rothschild have been forced to give up their plans to take shelter: “All of a sudden we won’t make it to Port Elizabeth before the strong SW’ly wind kicks back in so we’ve decided to climb a bit further north, to within around 150 miles of Port Elizabeth between the Morgan headland and St John’s point. This zone should be more sheltered.”

    It is plain to see that aboard Gitana 13 today a lot of questions still have to be answered and the team are continuing to rack their brains: “Will the seas enable us to remain hove to? If this isn’t possible, how far will we have to climb to preserve the gear?” Lionel Lemonchois and his nine man crew know that the coming days won’t be particularly pleasurable, but they can nevertheless count on the reliability of their steed, which has been put to the test on a number of occasions this year, whether it be during the Route de l’Or, the North Pacific crossing or even the maxi-catamaran’s tour of Asia.

    A few figures
    Gitana 13 left Hong Kong on Thursday 14th August at 07h55’32” (UT)
    On Friday 29th August at 07h45 (UT), Gitana 13 was sailing at 31°13.80 S / 38°03.07 E

    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)