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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

    20.10.2016

    Series “Awakening the senses” #3 Hearing.

    The tranquility of being at sea is not something I even think about! Aboard these boats, which are the fastest monohulls in the world for solo sailing, the noise is omnipresent, to the extent that it becomes an important parameter in a Vendée Globe preparation. To get a better understanding of this aspect, this week we have the third chapter in our…

    par Gitana

    The tranquility of being at sea is not something I even think about! Aboard these boats, which are the fastest monohulls in the world for solo sailing, the noise is omnipresent, to the extent that it becomes an important parameter in a Vendée Globe preparation. To get a better understanding of this aspect, this week we have the third chapter in our immersion into Sébastien Josse’s five senses: hearing.

    #3 HEARING

    Indeed, for the skippers, the idea is not to isolate oneself from the ambient decibels but rather to get into a position where they can select the useful sounds for performance. Aboard the Mono60 Edmond de Rothschild, Sébastien Josse notably carries with him a so-called active noise reduction helmet, which does the job nicely. This will help him get off to sleep, whilst enabling him to stay connected to his environment. The skipper of the five-arrow racing stable has chosen to take with him earpieces used in hunting that are lighter and easy to use, even when manœuvring, which give him relief and also help to reduce the nervous fatigue associated with this sonorous universe.

    PUTTING UP WITH THE RACKET

    This sense has long been a great aid to the sailor, given how well the latter could understand his boat through the way it sounded, even when it was impossible to see anything from down below. “Indeed, sounds were a reference in the past. Now, you’re primarily striving to cut yourself off from the noises that cause inference,” explains the skipper of Edmond de Rothschild, who is certainly not the only skipper to witness this phenomenon. “There’s the whistling of the appendages (rudders, foils) but you can adjust the trailing edges to alleviate it. The problem essentially stems from the shape of the hull, which no longer cuts through the water but bounces on top of it. It’s an endless drumming sound. Add to that the noise of the torrent that sweeps across the deck above your head and you need nerves of steel to keep going! Noise-cancelling headphones and earplugs are not enough. At the start, I found it unbearable and then, as you take in the fact that you don’t have a choice in the matter, you get used to it.”

    MUSICAL EXPERIENCE

    Sébastien has always listened to music, both on land and at sea. “All the different styles, rap, pop, metal even from time to time, and cooler things, French popular music, Jacques Brel… but not classical music,” states the 41-year old sailor. “Aboard the boat, music takes you away from your routine. You often select it according to the sailing conditions and your state of mind too. Sometimes, it can even make you cry,” he explains, his sensitivity subtly rising to the surface, without ever overwhelming. “I prefer to have speakers rather than listening through headphones, which cut you off too much from your environment. Here too though, given the noise of the boat, you have to pump up the volume! I have everything in my phone, including audio books. It’s really great as a paper book doesn’t last a day with all the moisture aboard. However, I’m not really into films or series, as that’s too out of step with what I’m experiencing.”

    AND HEARING FROM LANDLUBBERS?

    With Internet, email and a satellite telephone, the solo skippers have all the latest communication technologies. The link with those on shore is very personal to the sailors. “Race organisation calls up, the media too, and the radio and video link-ups enable us to share our adventures with the public. It’s hard to retranscribe exactly what we’re going through but technology has evolved a great deal, particularly the video images, which have an increasingly important role and all that is very positive for our sport,” he explains. “Otherwise, privately, I’m not a big talker but naturally I do call land. When it’s a bit calmer aboard, I like to talk with my nearest and dearest who are living a ‘normal’ life. I don’t like talking about what I’m doing; I’m more into rekindling my ties with something everyday back on land, which I inevitably miss and is a source of comfort to me. In the same vein, it’s important to get news of what’s happening in France and around the world. All that also helps you to hang on in there and not feel totally alone and on the world’s fringes.”