Heritage

Season 26
Types de médias
  • Photos
  • Vidéos
  • Sons
Années
  • 2026
  • 2024
  • 2023
  • 2022
  • 2021
  • 2020
  • 2019
  • 2018
  • 2017
  • 2016
  • 2015
  • 2014
Afficher les résultats (121)
supprimer tous les filtres
  • News
  • Gallery
  • Gitana 18
  • Team
  • 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

    30.10.2014

    Sébastien Josse’s objectives and aims 72 hours from the start.

    The Route du Rhum is a legendary race, which Sébastien Josse and the Gitana Team had no intention of following on their computer screens just because they didn’t have the winning steed. Indeed, measuring some 21 metres in length with a maximum sail area of 400m2, the Multi70 Edmond de Rothschild is the Tom Thumb’ of the XXL fleet. Based on numbers…

    par Gitana

    The Route du Rhum is a legendary race, which Sébastien Josse and the Gitana Team had no intention of following on their computer screens just because they didn’t have the winning steed. Indeed, measuring some 21 metres in length with a maximum sail area of 400m2, the Multi70 Edmond de Rothschild is the Tom Thumb’ of the XXL fleet. Based on numbers alone, the trimaran fitted out by Baron Benjamin de Rothschild won’t be setting sail on Sunday as one of the natural pretenders to victory. That said she does have some notable features in her favour as a powerful and spirited oceanic multihull. Giving up in a competition on the pretext that you cannot be the first to finish doesn’t tie in with the spirit of the sport this extract from Eric Tabarly’s Mémoires du large says it all and fully embodies the competitive mindset with which the skipper of Edmond de Rothschild is tackling this major event.

    Sébastien Josse relishes his status as an outsider, a status that enables him to approach his first solo transatlantic race on a multihull with confidence and a relaxed state of mind. With some 72 hours until the start, which will take place on Sunday at 1400 hours off the corsair city, the skipper of Edmond de Rothschild tells us his objectives and aims on the 3,542-mile course that separates Saint Malo from Pointe-à-Pitre. 

    Three questions to Sébastien Josse, skipper of the Multi70 Edmond de Rothschild

    Do you have any aims in terms of a result in this Route du Rhum?
    S.J: “Usually, when I line-up at the start of a race I’m in it to win it. This Route du Rhum is pretty unique in this regard as we’ve known since the start that on paper we don’t have the boat to win this 10th edition. However, signing up for such a race is not something you refuse. It’s an incredible experience to be part of the star class at the helm of a 21-metre trimaran… even if she’s one of the ‘Tom Thumbs’ of the Ultime (Ultimate) Class. Given the line-up and the giant multihulls, which will set sail alongside me on Sunday, I’d say that finishing 4th would already be a very good result. Such a place would mean that I’d sailed well, making the most of the Multi70 Edmond de Rothschild’s potential. A podium place is always a possibility, but to my mind that’s only feasible if there are some rather exceptional occurrences during the race… You have to remain humble and the primary goal is to get to the other side of the Atlantic.”

    What are your strengths in light of the competition?
    S.J: “The preparation has been meticulous both on a technical level, as Gitana Team has done an incredible job, and in the time spent at sea since the boat was relaunched in May. I have absolutely no fear of setting sail singlehanded. I feel good aboard and I’m at ease in all the different conditions. Since we received the Multi70 Edmond de Rothschild at the end of 2011, I’ve done a huge amount of sailing on her, whether that is in crewed configuration or the later double-handed sailing with the Transat Jacques Vabre. Today, I know the boat like the back of my hand. Though technology is of course essential in our mechanical sport, the alchemy of the sailor-boat pairing is also very important and it can lead to differences in certain phases of the course.”

    How do you gauge the Multi70 Edmond de Rothschild’s potential in the Ultime class?
    S.J: “It’s hard to answer this question as we haven’t yet sailed against the big boats like Banque Populaire VII, Spindrift 2 or Sodebo Ultim. Over the past year, we haven’t had any proper opportunities to size each other up in racing conditions. However, if we stick to the simple law of physics, namely that length is an unquestionable advantage, logically they’ll be in front of us. The Ultime class is clearly split into three sections: that of the large craft, an intermediary branch with Idec and Prince de Bretagne, and that of the three Multi70s. In up to 12 knots of breeze, the Multi70s have the advantage thanks to being lightweight and having the ability to adapt more quickly, but in excess of 17 knots, it’s our rivals in excess of 30 metres who will be in their element. They’ll be able to lengthen their stride, without being overly pressured in the manœuvres and the piloting. This is particularly true if we encounter big seas. However, the race remains open and we may have a few moves up our sleeve, especially if the tradewinds aren’t where they should be or are weaker than usual.”

    A supercharged Multi70

    Adapting her to solo configuration, retaining the seaworthiness of the trimaran, whilst striving to make up for the speed differential between the Multi70 Edmond de Rothschild and her rivals, in certain conditions at least, such were the sources of the Gitana Team deliberations.
    Not having enough time to lengthen the boat, the team very quickly opted for an innovative solution by replacing the classic float rudders with lifting surfaces, which have been highly prized appendages since the last America’s Cup, though they are still rather unique for an oceanic trimaran: “The aim of the winter refit was to make the boat as versatile as possible with the framework we had, whilst retaining the strengths of the platform, namely its reliability and sturdiness. The addition of T-foil rudders on the floats has been successful. After several months of fine-tuning, the system created by Guillaume Verdier and the Gitana Team’s design office, and manufactured in collaboration with Team New Zealand, comes as a great satisfaction. This isn’t restricted solely to the pitching and the drag, which constitutes a safety element. Indeed we’ve gained up to 2 knots on certain points of sail,” Sébastien Josse explains.
    With Gitana Team’s ultimate plan being to take this idea further, the lessons learned by Sébastien on the Route du Rhum will be very precious for the future developments that the team wishes to implement over the coming months.