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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

    13.11.2007

    Some smart sailing.

    Gitana 11 has successfully negotiated her emergence from the doldrums, gaining more than 120 miles over Banque Populaire in the process. Gitana Eighty effected a smart change of tack last night which this morning saw her take up second place in the fleet behind the Englishman Mike Golding.

    par Gitana

    Gitana 11 has successfully negotiated her emergence from the doldrums, gaining more than 120 miles over Banque Populaire in the process. Gitana Eighty effected a smart change of tack last night which this morning saw her take up second place in the fleet behind the Englishman Mike Golding.

    Gitana 11 is travelling at 25 knots in 90° winds, with staysail and 1 reef in the mainsail. After a night with the mainsail cleat up, Lionel Lemonchois and Yann Guichard have slowed slightly. Last night, the Gitana 11 crew was surprised on two occasions when the boat dug in suddenly and, given the current situation, they are opting to err on the side of caution. In the end though, the doldrums proved to be pretty much a formality… Hat’s off to Sylvain Mondon – Météo France, the boat’s router, who has once again demonstrated the perfect chemistry between him and the Gitana 11 team in helping them pull off a master stroke courtesy of a controlled and generally efficient exit from the doldrums!

    Now they are into the home straight towards Bahia, with a latest ETA for the boat of Wednesday evening.

    Yann Guichard, co-skipper of Gitana 11:
    “That’s it, we’re in the southern hemisphere now and well ahead of Banque Populaire. That’s certainly good for morale! But we need to remain watchful as the pace is picking up… Last night, there was a moment when our bows dug right in, slap-bang on the equator. It was nothing too serious, just that we were surprised by a squall and it turned out to be pretty violent. The doldrums caused us a few problems but all things considered, we came out rather nicely. Fatigue is starting to set in but now we’re going at 28 knots, it’s good fun and we feel as if we’re getting close to Bahia! The nights are tough on board as there’s no moon, so it’s pitch black…”

    On Gitana Eighty, Jean-Baptiste Le Vaillant declared this morning: “We’re quite pleased with our little coup. We negotiated the wind change well and made a nice change of tack last night.” The monohull is sailing mainsail/large spinnaker up in the wind and behind Ecover. This morning, Loïck Peyron and Jean-Baptiste Le Vaillant were slightly faster than Mike Golding but whereas the latter has a 40-mile lead, almost nothing separates his posse of pursuers and the outcome of the different options taken will most likely not be revealed before they pass through the doldrums, which they’re due to reach tomorrow evening.

    Loïck Peyron, skipper of Gitana Eighty:
    “Everything’s going well but I’m starting to get fed up of making a square run off the route. We’re not making much progress but one thing’s for sure: we’re well in control of our manoeuvres, especially gybing in 10 knots of wind! Things should speed up during the day tomorrow, but still on a square run, so we won’t get much closer. Then we’ll be slowed down at the doldrums and that could last quite some time. It’s hard to have a clear idea of what’s going to happen there, as uncertainty is what the doldrums are all about! The last 1,500 miles should be smoother and faster, so it should be an interesting speed test to finish off with.”