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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

    26.01.2021

    The Maxi Edmond de Rothschild homeward bound.

    At the end of last week, just a matter of hours was all it took for the Gitana Team to go from the satisfaction of a record time for its descent of the Atlantic aboard its flying maxi-trimaran to the great disappointment of discovering damage on its rudder, which definitively put an end to its Jules Verne Trophy record attempt. Since then, the crew…

    par Gitana

    At the end of last week, just a matter of hours was all it took for the Gitana Team to go from the satisfaction of a record time for its descent of the Atlantic aboard its flying maxi-trimaran to the great disappointment of discovering damage on its rudder, which definitively put an end to its Jules Verne Trophy record attempt. Since then, the crew of the Maxi Edmond de Rothschild has turned back and has spared no effort in what have been tricky weather conditions to reach more hospitable latitudes to the north. Up against a number of logistical constraints, directly linked to the health restrictions in force as a result of the global pandemic, the six sailors, in agreement with Cyril Dardashti and their router, Marcel van Triest, have decided to return to their home port via the sea and under their own steam, which means without stopping off to effect repairs in Cape Town, South Africa, as was initially envisaged.
    Breakage is not compatible with safety or performance

    “Our decision to abandon our attempt is a result of breaking the rudder stock on the starboard float”, Pierre Tissier reminds us. “It’s still too early to explain the exact reasons for this damage, even though we have had a lot of discussions with the crew and are able to substantiate certain hypotheses. However, access to the area in question is very difficult as the rudder system is too exposed on the boat’s aft section, meaning that lengthy investigations are not possible as yet. This is why envisaging carrying a spare part to make a replacement at sea is totally out of the question”, added the technical director of the five-arrow racing stable.
    In fact, the question about a spare part has been raised on several occasions following the announcement of the team’s abandon. As such, it’s important to respond to this issue: “It’s worth noting that a rudder weighs around 200 kg and assembling or dismantling such a part requires a special procedure, up to three people and a support rib, and that is when the boat’s in a port and without heavy seas… Offshore, the crew does not have the necessary tooling and, above all, it is not able to access the area in question, which is a long way aft and is protected by the rudder ‘chimneys’”, explained Sébastien Sainson, the director of Gitana’s design office.

    This damage forced Franck Cammas, Charles Caudrelier and their four crew to reluctantly interrupt a record attempt that was in full flight and looked very promising in terms of the upcoming weather… However, plunging down into the Southern Ocean, far from habitation and out of reach of any rapid emergency assistance leaves no room for approximation. At a latitude of 50° south, bordering on a zone prone to ice, the crew has to be able to be autonomous and in control of its trajectory under all circumstances.
    “The Maxi Edmond de Rothschild is equipped with lifting float rudders, which is fortunate because since the damage occurred, the crew has been able to sail almost normally with the rudder raised. In practical terms, had this damage occurred further down the track in our round the world, we may have looked at things differently, however in our case, it’s the safety aspect that prevailed. We’d only just entered the Southern Ocean. We were unable to use one of our float rudders, which meant that the only way to steer the boat was by using the other float rudder and the central rudder” explained Pierre Tissier, with Sébastien Sainson providing more light on the subject: “Thanks to the experience we’ve gained and the numerous miles the Maxi has now covered, we’ve noticed that the central rudder is more exposed to impact than before, which must be down to the addition of the elevators. As a result, there’s an added risk of ending up with two damaged rudders and a boat that is impossible to steer in some of the remotest areas of the globe. It simply wasn’t reasonable and therefore it was unthinkable to proceed.”

    Last but not least, there was the issue of performance. Taking on a speed record involves knowing what goal you want to achieve before you set sail. Given the exceptional time of 40 days 23 hours and 30 minutes recorded by Francis Joyon and his men, the moment we crossed the start line on 10 January offshore of Ushant, the sailors on the Maxi Edmond de Rothschild knew that there was no room for error. “If you were to put the safety issue in the Southern Ocean to one side, which obviously is not feasible in the real world, this breakage is a genuine handicap when the boat is sailing on port tack. We reckon that you lose around 20% of the boat’s potential. In the south, where the point of sail is predominantly off the wind, this would inevitably have had a major impact, but during a beat, which involves sailing close-hauled, or on a reach, we envisage that the speeds would have been even worse, except on starboard tack of course (namely pressed down on its port float and appendages) where the boat is intact. It’s tough, but that’s the nature of record attempts and the Jules Verne Trophy”, concluded Cyril Dardashti.

    Hats off to Boris Herrmann

    Just hours away now from the much-awaited denouement of the Vendée Globe, the present scenario is completely unprecedented with eight sailors grouped together within 500 miles. Added to that, a series of time bonuses are yet to be awarded, which should reshuffle the cards for the final podium, and for once this will likely differ from the line honours. At this historic moment, Gitana Team’s thoughts go out to Boris Herrmann. The German sailor, who is attacking his last night at sea in the top trio is the surprise of this 2020-2021 edition. He has sailed a masterful race aboard the Imoca Malizia Sea Explorer and has been proudly flying the flag of the Yacht Club de Monaco during this action-packed round the world. The 60-footer is none other than the former Mono60 Edmond de Rothschild, which the racing stable competed on in the race’s 2016 edition and it is a great source of pleasure to see one of the team’s former steeds performing so well. The final ranking will be revealed tomorrow offshore of Les Sables d’Olonne.

    Jules Verne Trophy Info
    Position of the Maxi Edmond de Rothschild on 26 January at 15:00 UTC:
    At the latitude of Luderitz in southern Namibia
    Speed: 24.6 knots
    Course: 135°

    Numbers to note:
    – Passage across the line: 10 January 2021 at 01h 33′ 46” UTC
    – Passage of the equator: 15 January 2021 at 14h 48’ 32’’ UTC, in 5 days 13 hours 14 minutes and 46 seconds
    – Passage of the Cape of Good Hope: 21 January 2021 at 11h27’46’’ UTC, in 11 days 9 hours and 53 minutes (new reference time)
    – Passage of Cape Agulhas: 21 January 2021 at 15h37’53’’ UTC, in 11 days 14 hours and 03 minutes (new reference time)
    – End of the 2nd attemps of Jules Verne Trophy in the Indian Ocean : 22 january 2021

    Crew of the Maxi Edmond de Rothschild:
    Franck Cammas and Charles Caudrelier, skippers
    David Boileau, trimmer bowman
    Erwan Israël, helm trimmer
    Morgan Lagravière, helm trimmer
    Yann Riou, trimmer media man

    Marcel van Triest, weather router
    Yann Eliès, replacement crew