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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

    25.08.2008

    Reduced pace on the cards.

    Since entering the Indian Ocean last Thursday, the maxi-catamaran in the colours of the LCF Rothschild Group has been throwing the dials into turmoil and devouring the miles with a certain ease. However, though the first half of the Indian was covered in express mode, 2,500 miles sailed in four days, the miles which still separate Gitana 13 from th…

    par Gitana

    Since entering the Indian Ocean last Thursday, the maxi-catamaran in the colours of the LCF Rothschild Group has been throwing the dials into turmoil and devouring the miles with a certain ease. However, though the first half of the Indian was covered in express mode, 2,500 miles sailed in four days, the miles which still separate Gitana 13 from the Cape of Good Hope will likely cause Lionel Lemonchois and his nine crew no end of trouble.

    It’s already been eleven days since the sailors of Gitana Team cast off from Hong Kong in their bid to break one of the oldest records: the Tea Route. With over 4,600 miles covered at an average speed of 17.94 knots, the skipper of Gitana 13 and his men have been maintaining a good pace.

    However, after four days’ respite in terms of the weather analysis, Gitana Team’s router is back in action, with a change in speed on the programme: “Gitana 13 is continuing to sail along the edge of a powerful zone of high pressure situated over the Kerguelen Islands, producing some E to SE’ly tradewinds fluctuating between 15 and 25 knots. It is to the south of the Reunion Islands that Lionel Lemonchois and his crew are preparing to progressively leave these highly favourable sailing conditions behind them. Indeed, by making headway towards the south-west the wind will ease to 10-15 knots and return to the NE’ly sector, which will no longer enable direct and rapid progress towards Africa. Several gybes are likely to be needed over the next couple of days in order to escape this zone as best they can. However, prior to hitting the disturbed airflow of the temperate latitudes, the crew will still have to cross a zone of transition to the south of Madagascar in the middle of the week. This difficulty will prove difficult to handle, since it concerns a barometric col (light winds), the position of which still remains extremely uncertain” explained Sylvain Mondon.

    We can fully understand that the weather situation currently taking shape ahead of the 33 metre maxi-catamaran is a far cry from the downwind points of sail and the high speeds to which the men of Gitana 13 have been accustomed over the past few days.

    Aboard ship life goes on and the ten sailors are preparing themselves for this zone which they knew would be tricky. Indeed, a few days ago, Lionel Lemonchois dared to make a comparison between the passage of the Cape of Good Hope and that of Cape Horn, performed last January: “Good Hope is rather like the Horn of our Tea Route. I’m hoping it won’t be as difficult but the approach and the rounding of the southern tip of Africa itself could slow us down and make us lose some precious miles.”

    At the 0900 hour position report this morning, Gitana 13 was sailing along the longitude of Rodrigues and was positioned 450 miles from the longitude of the Reunion Islands. Already Lionel Lemonchois’ crew were feeling the early signs of a more unsettled breeze.

    A few figures

    Gitana 13 left Hong Kong on Thursday 14th August at 07h55’32” (UT)
    On Monday 25th August at 07h15 (UT), Gitana 13 was sailing at 23°33.97 S / 63°37.43 E

    Watch No1: Lionel Lemonchois (Skipper / watch leader / helmsman) / Olivier Wroczynski (trimmer /head of computers and power)  / David Boileau (Bowman /  head of deck fittings)

    Watch No.2: Ludovic Aglaor (watch leader / helmsman) / Laurent Mermod (trimmer) / Ronan Le Goff (Bowman)

    Watch No.3: Pascal Blouin (Watch leader / helmsman) / Ronan Guérin (trimmer) / Léopold Lucet (No.1, head of supplies and doctor)

    Outside the watch system: Dominic Vittet (navigator)