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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

    30.10.2006

    Atlantic here we come!.

    The first night of the Route du Rhum proved eventful for the two Gitanas, who emerged from the Channel this Monday morning in a south-westerly wind extremely variable in terms of force and direction. Lionel Lemonchois on Gitana 11 was hot on the heels of the leader Franck Cammas, while Thierry Duprey du Vorsent on Gitana 12 lay in eight position af…

    par Gitana

    The first night of the Route du Rhum proved eventful for the two Gitanas, who emerged from the Channel this Monday morning in a south-westerly wind extremely variable in terms of force and direction. Lionel Lemonchois on Gitana 11 was hot on the heels of the leader Franck Cammas, while Thierry Duprey du Vorsent on Gitana 12 lay in eight position after electing to take up a course to the north of the fleet.

    The early going in this eighth Route du Rhum was on the calm side as regards the sea, wind and temperature conditions, but the twelve trimaran skippers found themselves having to constantly manoeuvre and adjust their sails to adapt to a very changeable breeze, as Lionel Lemonchois (Gitana 11) explained at 08.00:
    “It’s a bit calmer this morning, but the wind is really unstable. Since the start at Saint-Malo at 13:02 on Sunday, the breeze has been gradually going round to the right, with the northwestly wind changing to north then north-east, then south-east and south before ending up south-west at daybreak… Normally, this rotation should continue until we get past the front we’re heading into. But last night, I was able to do quite a few miles with the gennaker trimmed tightly (110° of wind), to the point that I was moving at 22 knots! I’ve managed to stay roughly on the direct route but at the moment (08:00), it’s not easy with very little wind…”

    For Thierry Duprey du Vorsent, the start went well and the Gitana 12 skipper rapidly got the measure of the rhythm to be maintained:
    “In view of the fact that it’s my first solo trimaran race, the weather conditions for the start were perfect for me. I messed up a change of tack due to a stuck sheet, which put me a bit behind on passing Cape Frehel. But at sunset on Sunday, I had Alain Gautier in view ahead of me and Steve Ravussin just behind… At that point, the wind moved to east-north-east and ten knots, which allowed me to advance correctly with mainsail high and gennaker towards west north-west…”

    The twelve trimarans have already negotiated the first pitfall of this Route du Rhum, namely the Channel with its heavy maritime traffic in the fog and the perils of being passed with each gybe. The route is now less obstructed, enabling the trimarans to seek out the cold front expected on Monday afternoon, which should increase the pace by generating a good west to north-westerly wind and thereby allow the competitors to drop back down to the direct route. For by daybreak, the fleet had already spread out over more than 25 miles in latitude, Lionel Lemonchois (Gitana 11) followed by Thomas Coville being among the most southerly, while Michel Desjoyeaux, Antoine Koch and Thierry Duprey du Vorsent (Gitana 12) behind them had opted for a more northerly trajectory. The gaps on this Monday morning remain slight, with the first eight soloists separated by less than 20 miles in relation to the distance to the finish. But today will be decisive, since the first competitors to pick up the new breeze coming from the ocean will be able to “power on” by slipping beneath an anticyclone which is heading for Ireland. From this point, the big sprint towards Guadeloupe will be underway!

    Ranking ORMA Multihulls at 08:00am on Monday 30 October  :
    Placing
    Boat/ Skipper
    Latitude
    Longitude
    Speed
    Dir.
    Dist. arr.
    Dist. leader
    1
    Groupama 2 – Franck Cammas
    49 14.32′ N
    7 02.96′ W
    9.6
    277
    3342.7
    0.0
    2
    Gitana 11 – Lionel lemonchois
    49 00.36′ N
    6 45.80′ W
    9.7
    275
    3349.5
    6.8
    3
    Géant – Michel Desjoyeaux
    49 31.00′ N
    6 52.04′ W
    15.5
    298
    3354.2
    11.5
    4
    Brossard – Yvan Bourgnon
    49 18.72′ N
    6 31.84′ W
    12.1
    280
    3358.0
    15.3
    5
    Sopra Group – Antoine Koch
    49 30.08′ N
    6 44.52′ W
    13.8
    293
    3358.7
    16.0
    6
    Sodebo – Thomas Coville
    48 56.32′ N
    6 24.40′ W
    11.7
    281
    3361.8
    19.1
    7
    49 17.88′ N
    6 20.08′ W
    11.3
    278
    3370.5
    27.8
    8
    Foncia – Alain Gautier
    49 04.64′ N
    6 12.68′ W
    11.8
    283
    3371.5
    28.8
    9
    Region Guadeloupe-Terres de Passions – Claude Thelier
    49 08.60′ N
    5 42.00′ W
    9.1
    292
    3392.0
    49.3
    10
    Orange Project – Steve Ravussin
    49 40.28′ N
    5 42.68′ W
    9.5
    282
    3400.4
    57.7
    11
    Madinina – Gilles Lamire
    49 18.48′ N
    4 00.72′ W
    10.6
    274
    3458.4
    115.7
    NK
    Banque Populaire – Pascal Bidegorry
    Not known