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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

    Biscay Express.

    The headlands just flew by last night in the English Channel and the same was true of the Chenal du Four and Raz de Sein markers this morning! This observation from Antoine Koch, router to Sébastien Josse and Charles Caudrelier in the Transat Jacques Vabre, illustrates the rate at which the series of tactical passages have been ticked off by the 70…

    par Gitana

    The headlands just flew by last night in the English Channel and the same was true of the Chenal du Four and Raz de Sein markers this morning! This observation from Antoine Koch, router to Sébastien Josse and Charles Caudrelier in the Transat Jacques Vabre, illustrates the rate at which the series of tactical passages have been ticked off by the 70’ trimarans over the past 24 hours. Better positioned than its adversary as the front rolled through this morning, Edmond de Rothschild managed to get a slight edge on Oman Air-Musandam (Gavignet-Foxall) as they rounded the tip of Brittany. With the wind building to 25/30 knots it’s now time for an express crossing of the Bay of Biscay. It’s action stations then for the first piloting duel and the crews will have to make some refined choices in order to carve out a nice diagonal wake towards Cape Finisterre in the 4 to 5-metre waves coming at them side on!

    After a virtually sleepless night negotiating the strong currents in the English Channel and the Channel Islands, Sébastien and Charles have already managed to pull off their first tactical blinder. By hunting down a veering wind forecast this morning to the north-west of Brittany, the trimaran Edmond de Rothschild managed to cross ahead of its rival before achieving a peak speed of 32 knots in the Chenal du Four! And though there lead of just a few miles remains minimal in relation to the distance still to go, concluding this first round in style is a real confidence boost, especially as they launch into another tricky section.

    In good voice, bright and focused, the skipper explained this morning that each of them had twice managed to doze off for 30 minutes overnight. “We forced ourselves to get some sleep with a view to the next stage of the race. It’s going to be a long day with some boisterous conditions awaiting us in Biscay. We’re going to need to get some rest despite the sea state so that we’re in good shape for rounding the north-west tip of Spain. It’s a very close-run match with Oman, which isn’t surprising. That’s the principle behind our one-design boats. Charles and I are on top of our game though and determined not to let our guard down!”

    The Multi70s ahead of the storm

    Sébastien Josse spoke of driving rain, very low cloud and a “cold wind beginning to sting” as the Bay of Biscay opened out in front of the bows of the two large trimarans this morning. In their wake, the bulk of the fleet is still battling its way through the English Channel. With a big gale forecast for Saturday, the Class 40s will be sheltering in Roscoff this evening, whilst the Imocas and Multi50s ready themselves for some difficult hours in a bay swept by the storm.

    For Edmond de Rothschild and Oman Air-Musandam, the timing is somewhat different. “The westerly breeze is veering round to the north-west at noon, building to 25-30 knots in the process,” explains Antoine Koch. “The crossing to Cape Finisterre will be carried out today in heavy seas, before landfall is made tonight off La Coruña, where the breeze will switch round to the south-west. At that point we’ll have to put in another series of effective tacks so as to quickly make headway south.”

    Revving hard

    As a result the two pairs of sailors will be spending the day riveted to the helm, their hands on the sheets and their eyes on the look-out in lumpy seas. Though there aren’t any major tactical choices to be made, the senses will be on the alert as they continue to listen out for this exhilarating, spirited boat. Using all their powers of precision and anticipation, each wave and each wind shift will have to be utilised to gain ground towards the goal whilst keeping safe. “It’s a tough ask because in this fairly strong breeze, we also have to take it in turns to get some rest,” Antoine Koch explains knowingly, having sailed with Gitana Team for the past three years aboard the trimarans fitted out by Baron Benjamin de Rothschild. “We’re going to need to save our energy for our arrival off the Spanish coast, where there will be a series of manoeuvres to be performed in a tricky zone.”

    Ranking on Friday 8 November at 1300 GMT:
    1. Edmond de Rothschild (Josse-Caudrelier) 5,095 miles from the goal / 21.20kt average over 2 hours
    2. Oman Air-Musandam (Gavignet-Foxall) 8.18 miles behind the leader / 19.50kt average over 2 hours