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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

    22.09.2002

    Gitana X qualifies for La Route du Rhum….

    Midnight, the moon is high... In the rocky channel leading to the Bay of Quiberon (Atlantic), Gitana X slides through the night at 16 knots (30 km/h). A lively little firefly walks its beam of light on the deck. Lionel Lemonchois has his head lamp on, and is running from one side to the other of his boat and prepares to lower the sails. He has just…

    par Gitana

    Midnight, the moon is high… In the rocky channel leading to the Bay of Quiberon (Atlantic), Gitana X slides through the night at 16 knots (30 km/h). A lively little firefly walks its beam of light on the deck. Lionel Lemonchois has his head lamp on, and is running from one side to the other of his boat and prepares to lower the sails. He has just finished his 1000 mile (1852 km) single-handed qualifying passage for La Route du Rhum.

    After the tension of his first 4 day sail alone, it was expected that Lionel would be tired and a little drawn. But he was smiling, calm and relaxed, all the happier for this tête-à-tête with his racing machine. “I’m in the process of learning about Gitana and realise that I am able to sail her well and exploit her incredible potential. We’re beginning to get to know each other, to communicate. We are still on rather formal terms though. Once I’ve spent a week on board, we’ll be on more familiar terms” affirmed Lionel.

    During this compulsory sail, the weather was pleasant, with a top wind speed of 27 knots (50 km/h) in the first 24 hours, to the western tip of Brittany. This was the fastest stretch of the passage for Lionel (at an average of 17 knots) and he sometimes had to let go of the bridle. “Flying along at between 22 and 27 knots (41 to 50 km/h), I was under automatic helm with the main sail up and the small gennaker (balloon jib). In a strong gust Gitana picked up speed and changed course dangerously. I had to let the sails go to regain control. After that hairy moment, I brought the sheets back into the cabin (sheets being the ropes used to manoeuvre the sails) so that I would be able to react quickly if need be“.

    A sound boat

    Apart from that one incident, Lionel confirms Gitana’s qualities: “She is a really easy boat to handle. The cockpit is great. Everything works well. I spent a fair bit of time at the helm in my bucket seats. I can feel her potential. My job is to make the most of that. There’s no reason for her to sail any more slowly than the others. As for the mast, I avoid looking at it without any reason to. Of course it’s impressive. You never forget that it can always come down. But I’ve got faith in it“.
    In any event, the few tacks to windward in the bay of La Trinité-sur-Mer gave the impression of an extremely agile boat. An impression which is confirmed by the fineness of her wake – sliding in its purest form.

    Team spirit

    Gitana’s shore crew had been expecting her since the middle of the afternoon, to welcome her into the entrance of the Bay. But she kept her shore crew waiting, as the wind was not playing the game any more as she neared the coast. So, in the middle of the night, a RIB set out as a smaller boat was waiting in the entrance to the fairway. As soon as the trimaran had been spotted, four crew hopped on board, pleased to find their boat and her skipper once again. Naturally enough, Lionel left them to get on with the manœuvres, weighing his words as he talked about his sail. “I did not break one single length of line. We’ve done a nice job on her“. Each member of his team set about inspecting the boat – sails, electronics, deck gear etc., to make sure that everything was all right. Then Gitana was lined up in the ‘parking lot’ alongside two fellow Route du Rhum competitors. Her navigation lights were switched off. Everyone went off to rest with their heads already working overtime thinking about how best to share out the work to be done on Gitana so that she is ship-shape and Bristol fashion for the start in Saint-Malo on 10th November. As for Lionel, he’s already got his mind on his next solo outing: “I’m going to try and get another identical sail in before the start of the Rhum. If not, I’ll do some false single-handed sailing, in the company of a small crew who will be there just to observe the manoeuvres and the boat’s behaviour so that we can improve on our performance“.