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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

    01.06.2004

    Gitana X returning to La Trinité-sur-Mer.

    Marc Guillemot was contacted on the phone this morning at 10h300 French time and announced that he was making for La Trinité sur Mer and that he would not be re-joining the fleet in this race. After having thought about using Bonduelle's daggerboard which Jean Le Cam was only too happy to lend Marc, the Gitana Team had calculated that Gitana X woul…

    par Gitana

    Marc Guillemot was contacted on the phone this morning at 10h300 French time and announced that he was making for La Trinité sur Mer and that he would not be re-joining the fleet in this race. After having thought about using Bonduelle’s daggerboard which Jean Le Cam was only too happy to lend Marc, the Gitana Team had calculated that Gitana X would have a distance of almost 700 miles to make up for on the leader even if she managed to get away really early. This is plainly too big a gap to stand a chance of being in the running on this course.

    « As dawn broke this morning, I had two reefs in the main and the staysail up, with Banque Populaire to leeward. I’d decided to use the automatic pilot a little to get some rest after a rather busy night spent making up for the 40 minute penalty stop after the start.

    I heard two impacts and went to see if the crossbeam had suffered damage. In fact, the daggerboard had snapped clean off at the point where it enters the hull. I hauled on the helm straight away to bear away towards La Trinité sur Mer as it is impossible to perform well upwind without this appendage.  There was never any question of my being in danger with this damage. However, I did fly high on one float during the day and the night as I had a lot of canvas up to try and make my way up the fleet. I had 25-26 knots of NW wind around 6h00 UT when it happened.

    I’m really disappointed as the race had got off to a good start. The Gitana Team had worked really well – Luc Poupon and Yann Guichard were doing a good job on the routing front. There are only two single-handed transatlantic races every four years. It’s not something to be taken lightly, even if you always have a bit of a knot in your stomach before setting out. There’s a sort of emptiness… It’s tough to go through all the preparation for a race like this one and then have to call it a day.

    Until a few minutes ago, (10H30 French time), we had thought we’d use Bonduelle’s daggerboard which Jean Le Cam very kindly offered to lend us. But when we worked it all out, even pulling out all the stops, we’d still be 700 miles behind the fleet. So the Gitana Team and I have decided to withdraw as that would mean being two days behind the others ! We’re going to get our heads down and concentrate on the rest of the programme to make repairs and fit a new daggerboard for the Québec-Saint Malo. »