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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

    01.06.2006

    La dolce vita.

    While in La Ciotat the Gitana technical teams work away on Gitana 12's mast, at Trapani the weather conditions for the weekend are once again promising to be pretty unforgiving. Three trimarans, Gitana 11, Géant and Groupama, will face each other from tomorrow on waters which have never before welcomed these boats. But no matter, as here in Sicily,…

    par Gitana

    While in La Ciotat the Gitana technical teams work away on Gitana 12’s mast, at Trapani the weather conditions for the weekend are once again promising to be pretty unforgiving. Three trimarans, Gitana 11, Géant and Groupama, will face each other from tomorrow on waters which have never before welcomed these boats. But no matter, as here in Sicily, the multihulls are offering high entertainment to a public that is inquisitive, friendly and hungry for sporting thrills and spills!
    As we await the first day’s racing, it’s an ideal time to get the latest thoughts of Frédéric Le Peutrec, Gitana 11’s skipper.

    Trapani?

    “These are very interesting waters… the more you explore them, the less you know them. Consequently, it’s easy to be caught out by their effects. You have to be extremely careful and keep a continuous watch. Here, that’s much more part of the game than in areas like Fécamp, for example. It’s also the Mediterranean here, so things move a lot more, which ensures the competition stays very open.”

    Weather?

    “Wind, and strong wind too. Tomorrow, Friday, very strong, not to say too strong! It’s going to remain strong on Saturday before becoming lighter on Sunday.
    For us, this is quite a good thing, and from an entertainment point of view too. If there’s wind… the boat goes well. It’s a great leveller for the different boats, especially as we’ll be on the open sea. It’s going to be really spectacular!”

    3 boats?

    “There’s genuine interest here, real enthusiasm on the part of the locals to discover these boats. It’s true that 3 boats might not seem very many, but between the excitement that these trimarans always generate and the curiosity of the Sicilians I’m not at all worried. The important thing is that we hit it off together. And that has already happened! You only have to look at the resources deployed here… for example, a local TV station is promoting the event on a daily chat show, and members of the different teams keep popping up on it… As a result, we’re being inundated with curious members of the public and people are taking a real interest.”

    In sporting terms, how do the low numbers affect things on the water?

    “It makes the combat more at close quarters, more intense. You sail using more tactics and less strategy. You sail from boat to boat, looking to keep in contact and to pose them problems. You keep them close to you rather than striking out all alone in a particular direction and risking everything. It’s very interesting too, as the starts will be tight and highly tactical… the focus will be on the pure rules of sailing.”

    Solidarity…

    “Atmosphere is excellent, for example, we bumped the daggerboard against the rocks yesterday when returning to the port. The team are working on it now, but if it can’t be repaired on time, Groupama has offered to lend us their spare daggerboard   in the interests of putting on the best possible spectacle.”

    The crew…

    “The strength of a crew is its cohesion and training. We can’t be faulted on the first point, but unfortunately, we didn’t have enough time to sail the boat a lot in its new configuration. But it’s still a solid and effective team. A crew is put together for the long term, which is why we retained the lads from last season.”