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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

    14.11.2013

    Electricity in the air.

    After a sleepless night amidst the squalls and lightning, Sébastien Josse and Charles Caudrelier have pulled off their gamble. The Edmond de Rothschild duo is the first to escape the clutches of the Doldrums without having lost ground on its rival, Oman Air-Musandam, still some 80 miles behind.

    par Gitana

    After a sleepless night amidst the squalls and lightning, Sébastien Josse and Charles Caudrelier have pulled off their gamble. The Edmond de Rothschild duo is the first to escape the clutches of the Doldrums without having lost ground on its rival, Oman Air-Musandam, still some 80 miles behind.

    “I think their memory of the stormy squall they encountered at around 0200 GMT this morning will remain with them for a long time to come,” says router Antoine Koch, he too having spent the entire night without getting any shut-eye. “Charles was at the controls when he felt the electricity in the helm. Sébastien snatched the mainsail and felt the same thing. In an instant, the 12-knot northerly wind had veered round to the east and shot up to 33 knots! Fortunately, Seb and Charles had nicely anticipated this switch and had furled in the gennaker in the nick of time. Following on from this big fright the atmosphere was decidedly more fun. They were able to slip along for nearly four hours at good speed, heading due South towards the exit. After that, the wind suddenly abandoned them before kicking back in more steadily this morning to present them with an almost stable south-easterly breeze of around twenty knots.”

    Striking it lucky in the Doldrums

    The crew of the boat fitted out by Baron Benjamin de Rothschild has faired rather well in this ‘lightning’ negotiation of the Doldrums. “The aim is to make good speed in an area where it’s best not to hang around,” Antoine continues. “They managed to get through just before the zone expanded further and became more active, as will be the menu for the rest of the fleet in a few days’ time.”

    On the attack

    Credited with a lead of 80 miles over Oman Air – Musandam at the entrance to the Doldrums, Edmond de Rothschild has managed to hold onto the same advantage on exiting the zone. However, as you can see on the cartography, with her easterly separation, Oman Air-Musandam has managed to get to almost the same latitude as her travelling companion. Sidney Gavignet and Damian Foxall have staked it all so as to hunt down a favourable angle with which to slip along in the south-easterly tradewinds. For now, the wind remains steadier in the west.

    The equator this evening

    Sébastien and Charles are already within 100 miles of the equator, which they are set to reach over the course of this evening, at around 2000 GMT. In this way, Edmond de Rothschild will be the very first Multi70 in history to sail in the southern hemisphere. Even more remarkable is the excellent time the trimaran will have racked up to make the equator. Sailing double-handed, the crew should take a little over seven days and, if you just take into account their course from Ushant, their time is likely to border on that achieved by the maxi-trimaran Groupama 3 (105’ / 32m) helmed by Franck Cammas and his nine-strong crew during the first Jules Verne Trophy attempt in 2008. At that time, the skipper and his men took 6 days 6 hours 24 minutes and 18 seconds.

    Ranking on Thursday 14 November at 1530 GMT:
    1. Edmond de Rothschild (Josse-Caudrelier) 2,083.6 miles to go /21.4kt average over 2 hours
    2. Oman Air-Musandam (Gavignet-Foxall) 81.12 miles behind the leader /22.8kt average over 2 hours