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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

    08.11.2013

    The first night.

    After setting sail from Le Havre yesterday at 1200 GMT, the Transat Jacques Vabre fleet had what can best be described as an industrious first night at sea. Indeed, their passage around the Cotentin headland and their negotiation of the Raz Blanchard in particular, gave the forty-four competing duos a difficult ride. Leading the pack, the two Multi…

    par Gitana

    After setting sail from Le Havre yesterday at 1200 GMT, the Transat Jacques Vabre fleet had what can best be described as an industrious first night at sea. Indeed, their passage around the Cotentin headland and their negotiation of the Raz Blanchard in particular, gave the forty-four competing duos a difficult ride. Leading the pack, the two Multi70s had to battle hard against the current to extract themselves from the zone. Blazing a trail out front, the trimaran Edmond de Rothschild is currently making headway offshore of the north-west tip of Brittany, at the latitude of Brest, and will begin to traverse the Bay of Biscay this morning, where boisterous conditions are expected.

    The exit from the English Channel, particularly when there is a significant tidal range as there is at the moment, is never a picnic. And though the wind proved to be fairly tame over the initial hours of racing, the numerous currents punctuating the route towards the north-west tip of Brittany, certainly spiced up proceedings.

    “The passage around Raz Blanchard was quite a mission!” Sébastien Josse joked this morning. “The wind was pretty light with around 10 knots of westerly, and we were punching into as much as 7 knots of current. It wasn’t easy to make headway in the right direction. After that, along the Breton coast, the wind picked up, but it remained very shifty throughout the night with tenacious head seas that didn’t favour speed. The aim was to hunt down a rotation of the wind from the west to the south-west (backing) just north of the Breton coast.”

    In these variable conditions, the sailors only managed to get a little rest as Sébastien Josse confirmed this morning: “We were pretty busy and it was a short night! Although the speeds weren’t up to par and the conditions called for a great deal of trimming and manoeuvres, we forced ourselves to take it in turns to get our heads down for a few precious minutes. Indeed we know that with the boisterous conditions awaiting us in Biscay, it’s going to be a long day this Friday.”

    In fact, for the two Multi70s, the passage around the Breton headland will coincide with the arrival of a cold front synonymous with a significant increase in wind strength: “as the front rolls through, the wind will quickly switch round to the north-west where it will build to 25 then 30 knots over the course of the day. It’s in these conditions that Edmond de Rothschild will begin to traverse the Bay of Biscay on a reach (wind on the beam) towards Cape Finisterre. The seas will be fairly heavy with a north-westerly swell generating 4 to 5-metre waves”, concluded Antoine Koch, the onshore router for the Edmond de Rothschild duo.

    At today’s first position report (0400 GMT), Oman Air – Musandam was leading. However, three hours later, at the 0700 GMT position report, the trimaran fitted out by Baron Benjamin de Rothschild had regained control and boasted a lead of just over a mile ahead of its rival, which was position slightly further inshore. As such the 70-foot one-design duel is already in full swing and the race has only just begun.

    It’s worth pointing out that there are six official position reports a day at the rate of one report every 3 hours from 0400 hours. No position reports are produced overnight and from 1900 GMT, a position blackout is observed. Timing of the official rankings