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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

    13.05.2005

    Gitana X breaks her gennaker halyard.

    Gitana X brokeher gennaker halyard overnight and had to stop to repair in the shelter of bay off Algeria. Gitana 11 had lost a little ground this morning as she had been sailing in company of Géant, in having opted to steer clear of the mainland. The transitional zone between the westerly blow over the last couple of days and the new easterly breez…

    par Gitana

    Gitana X brokeher gennaker halyard overnight and had to stop to repair in the shelter of bay off Algeria. Gitana 11 had lost a little ground this morning as she had been sailing in company of Géant, in having opted to steer clear of the mainland. The transitional zone between the westerly blow over the last couple of days and the new easterly breeze ahead lies on the Tunisian border. Looks as though we are in for an eventful last few days of racing.

    « Our gennaker halyard broke overnight when boat speed was around thirty knots… We had to make a double turn and sought shelter in the Gulf of Bejaïa, known as Candle Bay (Little Kabylia) as repairs required climbing up the mast to reach the halyard. We got underway again at around 3h30 in the morning  » Nicolas Raynaud during a brief radio chat session. Difficult to imagine the shambles on board Gitana X in the middle of the night when a loud crack was heard and all of a sudden the sail flying more than 250 m² of canvas came tumbling down. Boat speed of thirty knots, with rough seas. All hands on deck to recover the sail as fast as possible – without damaging it at all. At least half an hour spent pulling on the slippery cloth with waves breaking all around. Then Thierry Duprey du Vorsent decided to hoist the Solent jib and luff to rally sheltered waters as soon as possible so that the crew could get a new halyard ready and check the cloth. Pitstop with furled sails in Candle Bay so that a member of the crew could shinny up the 31 metre high mast to thread a new halyard through. Meanwhile the rest of the fleet continued racing bound for Cape Bon.

    Tough on crew morale. Gitana X had run a superb race over the first half of the IB Group Challenge managing to come back on the peloton just before the night. But the team is a resourceful one and got going before day break without having to worry about what lay ahead. In fact, conditions had already started to slow fleet leaders down. 900 miles from the finish in Nice and Gitana X is still in with a chance of latching back onto the fleet thanks to this new transitional zone close to Tunisia.

    Gitana 11 did not have such a productive night as expected. Frédéric Le Peutrec and Yann Guichard took an offshore option as did Michel Desjoyeaux and Armel Le Cléac’h, for fear that the wind decrease close into land. But the Mediterranean is a special place indeed and renowned for its fickle weather patterns. Pascal Bidégorry and Franck Cammas were able to make a break away, pushing forty miles ahead of the pack by 4h00 this morning. However, by 6h00 this morning, Yann Guichard indicated that the wind was non-existent on the race zone. « We’ve little more than a 4-6 knots westerly blow. We overtook Géant an hour back coming to within 50 metres of her but the two others disappeared in the night. The problem is that the wind is slackening off abeam ! Fairly rough cross seas still westerly but veering gradually east – boat-breaking conditions. We started the night in the lead and had 25-26 knots but did not want to head inland as we were worried that there would be no wind. How wrong you can be ! We are making way to Tunisia under cloudy skies and light air. The easterly won’t be with us until 14h-15h this afternoon. We prefer to remain with Géant to have a reference as helming and trimming are tough-going right now. And it looks as though offshore wind pressure will be increasing this afternoon »

    Malta is still more than 350 miles away. A tricky phase lies ahead with chaotic seas to negotiate as we hug the Coast of Tunisia tacking in the strait of Sicily. End of race conditions are going to be light. There are still plenty of options to be taken before reaching Nice probably not before Monday evening at the earliest.

    Rankings – Friday 13th May 04h00 (French time) :

    1- Banque Populaire (Pascal Bidégorry) with 935.5 miles to the finish
    2- Groupama-2 (Franck Cammas)  + 3.1 miles
    3- Géant (Michel Desjoyeaux)    + 39.5 miles
    4- Gitana 11 (Frédéric Le Peutrec)  + 41.6 miles
    5- Foncia (Armel Le Cléac’h)  + 69.5 miles
    6- Gitana X (Thierry Duprey du Vorsent) + 142.6 miles

    For further information… www.gitana-team.com