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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.

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    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.

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    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.

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    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

    23.10.2018

    All systems go!.

    The big day is approaching and with just 12 days to go until they set sail across the Atlantic, the one hundred and twenty-three entries in the 11th Route du Rhum are making for Saint Malo and its famous ramparts en masse. The race village opens its doors tomorrow, Wednesday 24 October, at 12:00 GMT. Meantime, the Maxi trimaran Edmond de Rothschild…

    par Gitana

    The big day is approaching and with just 12 days to go until they set sail across the Atlantic, the one hundred and twenty-three entries in the 11th Route du Rhum are making for Saint Malo and its famous ramparts en masse. The race village opens its doors tomorrow, Wednesday 24 October, at 12:00 GMT. Meantime, the Maxi trimaran Edmond de Rothschild, which ranks among the six entries in the Ultime category, will have to wait another week until she can join in the festivities, the extraordinary proportions of these giants prompting the organisation to put in place a few extra measures, starting with berths in the outer harbour. In this way, it is in the peace and quiet of its technical base in Lorient that the five-arrow team is putting the final touches to this major first in singlehanded configuration. And as Sébastien Josse admitted this morning, on his return from his final training session before kick-off on 4 November 2018: it’s all systems go!

     

    VIDEO OF THE DAY // D-12 : The art of juggling or the marathon of the pre-start phases

    One last session offshore before the rush in Saint Malo

    Yesterday, Monday 22 October, shortly before 14:00 GMT, the Maxi Edmond de Rothschild left the submarine base in Lorient and set a course for the open ocean. Given that this is a period of ‘transhumance’ for those sailors competing in the Route du Rhum – Destination Guadeloupe as they make for the coast of northern Brittany, it would be entirely logical to assume that Gitana 17 was heading for Saint Malo herself… However, this outing spanning a few hours, along the edge of the continental shelf, actually heralded the end of the training phases for Sébastien Josse: “This year we haven’t exactly had a glut of strong breezes and it’s fair to say that I love to get in one breezy passage before a race start, especially so in solo format. During the pre-start phases, you quickly find yourself slightly isolated from the boat, whilst it’s very important for me to maintain that contact and stay focused on what lies ahead. Last night, there was a small weather window for that so I didn’t think twice about it. We had a medium to strong NE’ly wind – up to 25 knots – flat seas all in all, save for the return leg between Rochebonne and Belle-Ile en Mer. Such conditions were favourable for making fast headway with peak speeds in excess of 44 knots… To my mind, this rhythm and this pace is exactly what will make a difference for me in the Rhum! It was a ‘false solo’ format, in full Route du Rhum configuration as the boat is loaded up and could set sail for Pointe-à-Pitre today.” 

    The programme for the final days on land

    Le Naye lock gates, which mark the compulsory gateway into the basins in Saint Malo, measures almost 25 metres wide, but it’s not enough to enable five of the six Maxis in the Ultime category to gain access and moor alongside the bulk of the fleet in this Route du Rhum – Destination Guadeloupe. As such, several berths have been specially arranged in the outer harbour around the Harbour Station. As the organisers explained: “the Maxi Edmond de Rothschild team agreed to take up a berth alongside the dock at the Harbour Station, access to which is dependent on the depth of the water. In this way, it will have to wait until 30 October and a favourable tidal coefficient to tie up alongside.”

    Though the latest addition to the Gitana fleet can only be viewed from next Tuesday onwards, this is not the case for her skipper. Indeed, the solo sailor will be present in Saint Malo throughout the weekend for the reception briefing as well as the traditional presentation of the skippers, which will take place within the walled city, at the Fosse aux Lions, on Saturday 27 October from 16:00 GMT. The solo sailor will then head back to Lorient to deliver his giant to the race start from Monday if weather conditions remain in line with current forecasts, with a scheduled arrival in Saint Malo the following morning. Sébastien Josse will then tackle the home straight in his preparations to set sail on his 3rd Route du Rhum, which is naturally a debut performance aboard a flying multihull! “The coming days will be split between relaxing with family and the somewhat hectic pre-start schedules incorporating briefings and media appointments. I’m going to gradually get my head around the weather in some depth, but for now it’s still too early and there’s no point building castles in the air,” concluded the solo sailor.

    “Flight for dummies”

    Launched in July 2017, the Maxi Edmond de Rothschild is the first offshore racing maxi-multihull designed to fly in the open ocean. Designed by the naval architect Guillaume Verdier and his team in collaboration with the Gitana design office, this giant measuring 32 metres long and 23 metres wide is part Archimedean boat, part flying craft.

    A trail-blazer for a new generation, this boat has aggressive and innovative, purposeful planing hulls, which are a far cry from those used on previous oceanic multihulls. Everything about the forms of the floats and the central hull shout flight. She is equipped with the very latest architectural and technical advances in terms of appendages, with T-foil rudders and L-shaped foils measuring over 5.4m high. With this in mind, a great deal of thought has gone into the aerodynamics of the platform. The form of the beams in particular is evidence of this, as is the integration of the living cell / cockpit between the two beams. 

    VIDEO 3D ANIMATION : The trimming of the flaps, the angle of inclination of the foils, the hydraulics circuit… from Archimedean to flight mode, the Gitana Team offers you the instructions for use by dissecting the main phases of take-off using 3D animation.

     

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