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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

    31.10.2023

    Ridge of high pressure straight ahead with stalling likely.

    Setting sail from Le Havre shortly after 12:00 UTC on Sunday, the fleet of giants has just completed two testing days on the water for both the men and the machines. With the start of the race marked by breeze and heavy seas more than 50 knots reported in the English Channel and nearly 5-metre waves offshore yesterday the leaders are due to stumble…

    par Gitana

    Setting sail from Le Havre shortly after 12:00 UTC on Sunday, the fleet of giants has just completed two testing days on the water for both the men and the machines. With the start of the race marked by breeze and heavy seas more than 50 knots reported in the English Channel and nearly 5-metre waves offshore yesterday the leaders are due to stumble up against a wide ridge of high pressure in the coming hours. A genuine meteorological barrier across the road to the trade wind and the next course mark of Porto Santo, in the Madeira archipelago, will translate as an abrupt change to the pace set by the duos since the start. It is a scenario which Charles Caudrelier described in detail at this morning’s radio link-up.

    Some 70 miles shy of the leader this morning, Charles Caudrelier and Erwan Israël have come right back into contention now and, at the 16:00 UTC position report, they had closed to within 20 miles of the stern of SVR-Lazartigue, which is still heading the fleet. Banque Populaire completes this top trio, she too around twenty miles shy of the Maxi Edmond de Rothschild.     

    With the first ULTIMS passing the latitude of Cape St Vincent, in southern Portugal, 1,000 miles (of a total racetrack spanning 7,500 miles) have already been ticked off this Tuesday.       

    Radio link-up with Charles Caudrelier, Tuesday 31 October     

    “As day breaks, the sea has become calmer, which is nice. The start was awesome. We were immediately making very, very fast headway. We had a few minor issues. We managed to resolve them quickly, but at the time it was complicated. We soon managed to get back in contact with the head of the fleet and the boat was going well. The fleet split as we passed Ushant. To take the inside track at the TSS, we had to put in a lot of tacks and it was a bit boisterous as we had heavy seas and a lot of wind. 

    That’s how it’s been since the start: sail changes, putting in reefs, shaking out reefs… and the seas to deal with too! We didn’t get any good sleep, especially yesterday, when we were making very fast headway. It was sporty.  Our deficit in relation to SVR today? It’s the result of us taking the inside track at the TSS, but I don’t know whether they really wanted to go there. Initially, the routing took us down the inside track and once we were committed it had us taking the outside lane, but it was too late for us by then. Going where SVR was a real risk. We were scared that there wouldn’t be any breeze. In the end… it worked to the right of us, and it worked to the left of us, whilst we were stuck in the middle with no breeze. There was nothing we could do. Yesterday, we latched onto some breeze again at the same time as Banque Populaire whilst we were further over to the west. You can always have regrets about this or that option, but ultimately that serves no purpose. Let’s just say that we’ve successfully held onto our potential in readiness for the next 24 hours, which are going to be important. In fact, we’re looking in depth at the situation ahead, but there’s nothing obvious to pin our hopes on. We’re all kind of aligned and unfortunately, it’s going to be a bit random. The fleet will squeeze together and I think that very quickly we’re all going to be very close. After that, will the leader’s slight edge mean that he can extricate himself from it? To be honest it’s not easy for the routers. What’s important for us is to come out of this ridge of high pressure in the first group. After that we know we have a boat that performs well in the trade wind. It really is a vast windless zone up ahead and you’d have to be very smart to work out which route will be the quickest. 

    Right now, we’re recharging our batteries nicely. The seas are calm and we can sleep, which is something that was impossible to do last night. We stretched out but we didn’t sleep. Erwan and I are in good shape and eating well. We have some work to do in the light airs, so we’ll make the most of it, but there’s nothing too disturbing on the menu. We’re pleased to have come out of the bad weather with a boat in good health.”