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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

    03.11.2022

    Some uncertainty regarding tomorrow’s exit times for the Ultims.

    According to the initial schedule, the giants of the seas were due to lead the way out onto the moorings off Dinard from midday tomorrow. However, the elements might decide otherwise with a fairly meaty NNW’ly wind set to gatecrash the party. With three days to go until the start of the Route du Rhum Destination Guadeloupe, the weather trends start…

    par Gitana

    According to the initial schedule, the giants of the seas were due to lead the way out onto the moorings off Dinard from midday tomorrow. However, the elements might decide otherwise with a fairly meaty NNW’ly wind set to gatecrash the party. With three days to go until the start of the Route du Rhum Destination Guadeloupe, the weather trends starting to come together and a windy 2022 edition on the cards, on shore the pace is ramping up. Now very much into his race, Charles Caudrelier is dividing his time between his routing team, with whom he has multiple meetings to analyse the various scenarios, and the members of Gitana Team, to tick off the final details on his checklist. The Maxi Edmond de Rothschild is ready to go and keen to do battle in the legendary transatlantic race, which is due to set sail this Sunday.


    The question on everyone’s lips is “Will the Ultims be able to leave the Bassin Vauban tomorrow, Friday 4 November, as planned?” Ultimately, we’ll have to wait until early tomorrow morning, and the meeting organised by Race Management and the Ultim teams, to find out the answer.

     

    Cyril Dardashti, director of Gitana Team, explains to us the reasons behind the uncertainty regarding the exit plan for the giants of the seas.

    “Tomorrow, the forecasts are predicting a NNW’ly wind of around twenty knots with gusts. In our preparations for entering and exiting the lock we set ourselves an upper limit of around 15 knots, a wind strength up to which we thought we would be in control to enter and pass through the Naye lock. In a NNW’ly, the wind is perpendicular to the lock, which would flatten the boat against the side of the lock.

    As a result, the idea is to push back the exit slot, so the wind has time to drop away a little. This should be the case from 17:00 hours. However, not all the Ultims will be able to exit at that point. In terms of the tide, we can no longer exit after 18:30 hours. As such, we’d have to wait until 02:00 hours the following morning to have more acceptable conditions both technically and meteorologically. We’d have preferred to have been able to go and moor off Dinard in daylight, but we’ll have to adapt.

    We were all too aware on agreeing to enter the Bassin Vauban that the exit might be tricky as we have to shoehorn her in and out. However, when I see all the public coming along to greet us on the docks we have no regrets. It was well worth the effort,” enthused the boss of Gitana Team, before casting his mind forward to the race. “In terms of the weather, we’re kind of in the configuration we were dreading. There hasn’t been much breeze in Brittany in recent weeks. We even had a September and part of October where you could be forgiven for describing conditions as anticyclonic. Right now, the weather is typical of the season and the sailors will get scooped up by trains of depressions.”