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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

    26.08.2009

    Gitana 11, launch D-7.

    Despite the discretion which surrounds the transformation of Gitana 11, things are progressing well in the boatsheds of Baron Benjamin de Rothschild’s stable based in Saint-Philibert. Since the arrival of the first pieces of the “jigsaw” midway through June, the pace has picked up and all the members of the Gitana Team are now ready to knuckle down…

    par Gitana

    Despite the discretion which surrounds the transformation of Gitana 11, things are progressing well in the boatsheds of Baron Benjamin de Rothschild’s stable based in Saint-Philibert. Since the arrival of the first pieces of the “jigsaw” midway through June, the pace has picked up and all the members of the Gitana Team are now ready to knuckle down and complete the last stretch of work. With a week to go until the launch of the new maxi-trimaran, specially reconfigured for the Route du Rhum 2010, the excitement is tangible. We look back at the chronology of what has been a studious summer…

    June: the first piece of the jigsaw in the boatsheds of La Trinité sur Mer
    The first float constructed in New Zealand and repatriated in France via cargo ship, arrives at the Gitana Team workshop after being unloaded in Le Havre and transported via road. It’s a very important arrival for the yard’s main-springs: the hour for the start of assembly strikes. Positioning and grafting will ensue for nearly three weeks.
    During this time, the large new additions to the platform take shape. Indeed it is impossible not to notice the pods which are now positioned on either side of the cockpit. This protection, which took up a good number of hours of study and then implementation for the men of Gitana Team, will accomodate the trimaran’s future helming stations in a few weeks time. The future skipper, Yann Guichard, commented on this innovation: “Gitana 11 has been transformed with the principle aim of competing in the next Route du Rhum. This predominantly solo configuration led us to rethink a large part of the cockpit to satisfy the requirements of the single-handed sailor.” In this way the off-centre helming stations level with the aft beams are out!

    July: Second arrival
    Taking exactly the same route as its twin piece, the second float arrives in Saint Philibert on 2nd July. As such it’s a similar operation that has to be repeated to balance out the maxi-trimaran. In turn, a few days later, the bow of the freshly received central hull takes up position. The positioning and adjustment of this new piece measuring nearly 7 metres is a delicate and meticulous element of the structural work.
    At the end of July, a few days of well deserved holidays momentarily interrupt the refit. Solely the team artist will put in a few additional hours alongside Gitana 11: Hubert Corfmat, who has made every effort to apply himself to producing the new decoration designed by Jean-Baptiste Epron throughout the refit, will benefit from an entirely empty workshop to put the final touches to his work. The colours which adorn the winning trimaran from the Route du Rhum 2006 are faithful to the pure, elegant lines which have characterised the Gitana yachts for the past hundred years or so.

    As such, little by little, day by day, Gitana 11 is beginning to flaunt her new dimensions, that of a former 60 foot trimaran now able to boast a waterline length extending over 77 foot. Indeed she has gone from her original 18 metres to 23 metres!

    Mid August: the final home straight for the Gitana Team
    From 17th August, the whole of the workforce is back, ready to attack the final home straight; a job which certainly isn’t to be sniffed at. Though the whole of the structural part of the boat is complete, the platform is entirely stripped as it awaits all the essential equipment for it to operation smoothly. On the programme: reassembly of the deck hardware (winches, cleats, blocks…), completion of the electronic and computing installation, followed by tests to validate the new systems. As regards ropework, the halyards, sheets and warps have been prepared beforehand and are currently back in their original position. Finally, we shouldn’t forget the positioning of the trampolines which is a really long, painstaking job with many hands required to constantly retension the 155 m2 of rope which is indispensible in enabling sailors to move around the boat.

    In a week’s time, the Gitana Team shed will open its doors to reveal the new lines of the maxi-trimaran Gitana 11. The long months being refitted will then quickly become a thing of the past and one of the finest pages in her young history will begin: the first sessions under sail and of course Yann Guichard’s first solo tacks at the helm of this new steed.