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

    14.02.2008

    Faster than the route plan.

    par Gitana

    Yesterday was quite simply our best day since rounding Cape Horn. We are 400 miles closer to our goal, even though we actually covered 520 miles on the big blue. It was a good day, with no sail changes. The only maneuver was a few jibes to try to stay in the good channel of wind generated by the Easter Island high-pressure system. Like the Pacific Ocean, this high-pressure system is enormous, and it’s taking a long time to get past. But what’s key is that we’re blowing away all the route projections. We’ve gotten ahead of them, and this is a good sign, because this savvy computer program combines the wind fields expected in the coming days with Gitana 13’s performance (polar speed) to produce the best route to follow to get the most out of the expected wind conditions.

    Now, Dead Cloud has now earned the right to be called Big Dead Cloud. This nickname fits navigator Dominic Vittet like a glove. He’s one of those people who like to talk with their hands. He’s always using one hand to show the position of a high-pressure center, and the other to show an isobaric curve that becomes the wind direction…his hands move through space in a strange ballet of ridges, fronts and other wind fields. Someone trained in sign language would have trouble following him…as do we sometimes. But since Big Dead Cloud is also really talkative, we all act like we understand otherwise he’ll just go on and on.

    This is how our days go by…under blue or gray skies, each day bringing a sunrise that, weather bright or not, presents a beautiful spectacle. The highlight of the day yesterday was undoubtedly our leeward passage of two “pebbles” lost in the middle of this void, 500 miles from the coast of Chile: San Ambrosio and San Felix islands. San Felix, which is bigger at two miles long, is covered in antennas and huts with a landing strip.  Must be a military base serving also as a weather station. This strip of land, without any apparent plant life, didn’t make us want to stop, and that’s perfectly fine with me.

    Goodbye

    Nicolas Raynaud