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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

    07.11.2014

    Edmond de Rothschild over midway.

    After setting out from Saint Malo last Sunday at 1400 hours local time, the Multi70 Edmond de Rothschild crossed the symbolic midway point in the race, which equates to nearly 1,771 miles covered along the great circle route (direct route), this Friday morning shortly after 0700 GMT. According to the initial estimates of his routers Jean-Yves Berno…

    par Gitana

    After setting out from Saint Malo last Sunday at 1400 hours local time, the Multi70 Edmond de Rothschild crossed the symbolic midway point in the race, which equates to nearly 1,771 miles covered along the great circle route (direct route), this Friday morning shortly after 0700 GMT. According to the initial estimates of his routers Jean-Yves Bernot et Antoine Koch some four days of sea still lie ahead of the bows of the trimaran fitted out by Baron Benjamin de Rothschild before making Guadeloupe. Four days which Sébastien Josse fully intends to make the most of in his bid to catch up with the head of the fleet. This is all the more true given that the weather conditions encountered by the Ultimes in this second half of the course suit the Gitana Team pairing to a T. At 1600 GMT, the native of Nice was lying in fourth place, some 321 miles shy of the firm leader, Banque Populaire VII, but he’d come back to within 40 miles of third placed Prince de Bretagne.
    Tradewind strategy

    “I’ve had my first flying fish”, said the skipper of Edmond de Rothschild early this afternoon. The visit by this flying fish is an unmistakeable sign: the seven Ultimes are already sailing in the famous north-easterly tradewinds, synonymous with downwind conditions and high speeds. Thanks to this air flow, albeit less powerful than usual (between 15 and 20 knots), Sébastien Josse and his rivals have been making headway towards Guadeloupe since yesterday, the day before yesterday for some of the ‘lucky’ ones.

    The ability to slip along downwind is something that is relished by solo sailors, though it requires a great many adjustments. Indeed, in sailing, as in life, it’s all about balance! Staying far enough north so as not to distance oneself too far from the direct route, but sufficiently far South to benefit from a well-established tradewind; such is the stylistic composition the sailors in the Ultime class are currently focusing on. “The overall strategy is fairly simple, as the tradewind route is dotted with more shifty zones, you have to be on your toes constantly to ensure you’re sailing at the best angle in the best wind strength. The Ultimes are tangential to the Azores High, which is just to the north of them. When you approach the high pressure, there is less wind and that’s what we’re trying to avoid at all costs. However, the gybes towards the south-west to hunt down the pressure are fairly disadvantageous in terms of distance covered. As a result, we’re trying to put in as few as possible,” explained Antoine Koch, from Gitana Team’s routing cell. At this little game of trajectories, Sébastien Josse has sailed a blinder and made up ground on the head of the fleet. His speeds over the past 24 hours testify to this: indeed the Multi70 Edmond de Rothschild was the fastest of the Ultimes having devoured 538 miles at an average speed of 22.4 knots.

    Edmond de Rothschild reduces the deficit

    The nights go by and every one is different in the Route du Rhum – Destination Guadeloupe… Overnight on Wednesday, Sébastien Josse endured a tough phase, during which he battled hard to extract himself from a zone of light airs, thus letting his direct rivals steal a march on him whilst conceding precious miles to his pursuers. Last night, the solo sailor fully exploited the potential of his Multi70 and had made up ground on the head of the fleet as Antoine Koch explained this morning: “Despite some rainy squalls under which there was little wind, Sébastien managed to slip along seamlessly the whole night. The excellent heading associated with a good speed enabled him to snatch back nearly 70 miles in relation to the leader and around thirty miles from Lionel. It’s quite a move.”

    Late morning, Prince de Bretagne appeared to encounter some problems, but the damage doesn’t seem to have been serious as the red multihull has since powered up again. However, the incident played into Sébastien Josse’s hands and he is back to within 40 miles of his transom. In the end, the 120 miles, which yesterday separated the Multi70 Edmond de Rothschild from third placed Prince de Bretagne, are a third of what they were, so the race is very much on as the fleet make for Pointe-à-Pitre.

    Ranking on 7 November at 1600 GMT
    1. Banque Populaire VII (Loïck Peyron) – 1,260.4 miles from the goal
    2. Spindrift 2 (Yann Guichard) – 129.5 miles back
    3. Prince de Bretagne (Lionel Lemonchois) – 282.6 miles back
    4. Edmond de Rothschild (Sébastien Josse) – 321.8 miles back
    5. Musandam Oman Sail (Sidney Gavignet) – 408 miles back
    6. Idec Sport (Francis Joyon) – 434 miles back
    7. Paprec recyclage (Yann Elies) – 571.8 miles back

    Abd – Sodebo Ultim’