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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

    10.09.2005

    In search of missing wind.

    What a strange day it has been. It all started with a fair bit of wind this morning to fizzle out almost totally by the beginning of the afternoon. Only one round was run, a coastal race between Fécamp and Yport where Gitana 11 finished third.

    par Gitana

    What a strange day it has been. It all started with a fair bit of wind this morning to fizzle out almost totally by the beginning of the afternoon. Only one round was run, a coastal race between Fécamp and Yport where Gitana 11 finished third.

    So after a half-hearted first day, the Gitana Team seemed a bit more sprightly on Saturday morning when the SW breeze kicked in. At one point, the wind even picked up to around 15 knots 10 metres above the water, the boats reaching speeds of around 15 knots. Crew morale picked up too. There was even a traffic jam on the starting line, a remarkably well timed start it was too from Pascal Bidégorry who aimed for the fresher breeze mid-line. Franck Cammas cramped the style of Armel Le Cléac’h and Thierry Duprey du Vorsent forcing them to hug the committee boat. Meanwhile at the other end of the line, Frédéric Le Peutrec was fetching and as regular as clockwork, on the port tack, but as the stand-on yacht – thus not having right of way – let the whole of the fleet through to head for the lay line, the edge of the course. The aim is to have just one change of tack to do and reach the windward offset mark of the coastal course, comprising two laps of a sort of triangular shaped course off Fécamp and Yport.
    Two laps which took longer to get round than expected as the wind had checked out by the time the fleet was well into the race. Meanwhile an incoming tidal current had started to make its presence felt on the course where the surface had become a little choppy, with wind holes becoming increasingly frequent. 

    Groupama-2, Foncia and Gitana 11 were bumper-to-bumper at the first mark. By the time they were ready to raise the gennaker after the Yport mark, Frédéric Le Peutrec managed to cover Armel Le Cléac’h who preferred to gybe immediately. The manoeuvre between the two boats played into Franck Cammas’ hands. Time then for him to free himself of the pressure of the follower and move into a true leading position with the wind right behind him in every sense of the term. The battle for second place was far from played out as at one moment, some unsteady wind would favour trimarans who had headed away from the coast, and another would go in favour of those who hugged the cliff-lined coast. Pascal Bidégorry came out tops, taking second at the leeward mark on the first lap of the course.
    The hierarchy was such as there was no choice but to respect the established order right up to the finishing line. Gitana 11 held onto her third place behind Groupama-2 and Banque Populaire whereas Gitana X just could not keep up in such variable conditions. Franck Cammas is looking untouchable yet again. The battle for second and third is going to be a bitter one. If the wind picks up at least. In the middle of the afternoon, after patiently waiting for three hours desperately hoping for a puff of wind to show up, there was just no way it was even worth thinking about firing a shot for a second course 

    Rankings – Round 4:

    1- Franck Cammas (Groupama-2)
    2- Pascal Bidégorry (Banque Populaire)
    3- Frédéric Le Peutrec (Gitana 11)
    4- Michel Desjoyeaux (Géant)
    5- Armel Le Cléac’h (Foncia)
    6- Thierry Duprey du Vorsent (Gitana X) 

    Round 4 : SW (230°) 15 knots decreasing 10 then 5 knots, start of the incoming tide, coastal course n°3 (offset buoy at 1 ½ miles), triangle between Fécamp and Yport, finish of Fécamp.

    Provisional rankings – Grand Prix du port de Fécamp over four rounds:

    1- Franck Cammas – Groupama-2 (1+1+1+1) 4 points
    2- Armel Le Cléac’h – Foncia (2+2+4+5) 13 points
    3- Pascal Bidégorry – Banque Populaire (3+4+5+2) 14 points
    4- Michel Desjoyeaux – Géant (5+3+2+4) 14 points
    5- Frédéric Le Peutrec – Gitana 11 (4+6+3+3) 16 points
    6- Thierry Duprey du Vorsent – Gitana X (6+5+6+6) 23 points