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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

    09.11.2013

    An Iberian rodeo prior to some Portuguese surfing.

    You have to earn a ride in the tradewinds! In 24 hours’ time, the ability to slip along in a warm breeze is sure to mellow the spirits as the two 70’ trimarans have had to endure a painful’ night off La Corua. Indeed, as this description from Charles Caudrelier (co-skipper of Edmond de Rothschild) in the Transat Jacques Vabre radio session indicate…

    par Gitana

    You have to earn a ride in the tradewinds! In 24 hours’ time, the ability to slip along in a warm breeze is sure to mellow the spirits as the two 70’ trimarans have had to endure a painful’ night off La Corua. Indeed, as this description from Charles Caudrelier (co-skipper of Edmond de Rothschild) in the Transat Jacques Vabre radio session indicates, Cape Finisterre has really put the sailors to the test. On approaching the Spanish coast, the wind has doubled its intensity and the seas are boiling as a result of the steeply rising seabed. Fortunately, the nocturnal rodeo has turned to the advantage of the Josse-Caudrelier duo, which has opted to bend its route offshore. Meantime, the Gavignet-Foxall pairing has taken an inshore option, where it has had to perform more tack changes than its rival. At the 1230 GMT ranking, the trimaran fitted out by Baron Benjamin de Rothschild had gained headway to the South with a lead of some thirty miles or so over Oman Air-Musandam.

    After their successful mission to round the Breton headland, Sébastien Josse and Charles Caudrelier were able to get an edge in this second tricky section, though it proved to be very testing. “We had some tough sea conditions in the Bay of Biscay, which slowed our speed to around 22/23 knots. In a more practicable sea state we’d have been making 30 knots,” Charles explains. “As such we arrived a bit late off La Coruña and the south-westerly wind was already blowing at 25/30 knots. We endured a painful night with heavy seas. We’re pretty much clear of it this lunchtime. It’s still windy but we’re sticking to the same tack with much more pleasant seas.”

    A very seaworthy thoroughbred

    On shore, the night wasn’t at all restful for routers Jean-Yves Bernot and Antoine Koch. “The crew and ourselves opted to get clear of the coast,” the latter explains. “On the port tacks, which enabled them to make headway offshore, the boys were beating into a big beam swell. They had to carry a fair amount of sail so they could continue to manoeuvre and they came off well.”

    Like cowboys in a wild arena, the sailors are having to endure a very rough ride as their steed rears up on every wave. “We’re being careful about how we move around a boat, which is jerking about violently. It’s important that we don’t knock into anything or take a silly tumble,” Charles continues. “We’re pleasantly surprised by how the boat is behaving; she’s proving to be very seaworthy. We have to sail cleverly by not putting the gear or ourselves under too much strain and for now we seem to be managing that fairly well.”

    Tomorrow, the return of summer

    “We’re leaving the winter in France to get back to the summer,” the Breton concludes, his voice, like that of Sidney Gavignet’s when contacted by the organisation team a little earlier, showing signs of the physical commitment of this race start. “We’re having a right old ding-dong with Oman and tomorrow we’ll already be in the warm airs of the tradewinds. We certainly won’t have anything to complain about there, though it can’t be easy for the competitors behind us.” Indeed, at the core of the Bay of Biscay, the Multi50s and the IMOCA monohulls are struggling to make headway. The first of this group, MACIF (Gabart-Desjoyeaux), was still some 250 miles from the Spanish headland at 1230 GMT.

    “As they make their way along the coast of Portugal, Sébastien and Charles will begin to feel the influence of the Azores High,” explains the router for Edmond de Rothschild. “The skies will clear, the clouds will flatten out and the sun will begin to shine. At that point it’ll be important not to get lax though as speed will also put in an appearance again with 20 knots of wind on the beam (reaching), leading to sporty conditions with some nicely timed gybes needed so as to keep to the edge of the zone of high pressure and hold onto the maximum amount of pressure.”

    The Portuguese coast is renowned for its famous surf spots. Balanced on the crest of the wave in more ways than one, the sailors will also have to do everything by feel as they slip along the isobars, being careful not to fall as the wind drops the closer they get to the centre of the zone of high pressure. Switching from one exercise to the other, this dense and varied transatlantic sprint is certainly living up to expectations and it’s only just begun!

    Ranking on Saturday 9 November at 1230 GMT:
    1. Edmond de Rothschild (Josse-Caudrelier) 4,709 miles from the goal / 24kt average over 2 hours
    2. Oman Air-Musandam (Gavignet-Foxall) 30.98 miles behind the leader / 27.9kt average over 2 hours

     

    Note to editors  

    The Edmond de Rothschild duo

    Sébastien Josse, skipper
    38 years of age, lives with his partner
    6 Solitaire du Figaros, 2 Vendée Globes, 1 Volvo Ocean Race, 1 Jules Verne Trophy
    2011, joined the Gitana Team and performed his first tacks on an oceanic multihull
    3rd participation in the Transat Jacques Vabre, 1st on a multihull
    To find out more about Sébastien Josse: http://www.gitana-team.com/fr/event.page.aspx?eventid=88&category=skippers&page=sebastien_josse_2013.html

    Charles Caudrelier, co-skipper
    39 years of age, married, two children
    8 Solitaire du Figaros, 11 transatlantic races, 1 Volvo Ocean Race
    4th participation in the Transat Jacques Vabre, 2nd on a multihull, including 1 victory in 2009 in the Imoca class with Safran
    To find out more about Charles Caudrelier: http://www.gitana-team.com/fr/event.page.aspx?eventid=88&category=skippers&page=charles_caudrelier_2013.html