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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

    28.08.2008

    “Good Hope” bars the way to Gitana 13.

    Setting out from Hong Kong on 14th August 2008 in a bid to set a new reference time along the highly select Tea Route (Hong Kong / London, via the Cape of Good Hope), the maxi-catamaran in the colours of the LCF Rothschild Group is approaching the coast of South Africa. However, after making highly rapid progress between the Sunda Strait and the is…

    par Gitana

    Setting out from Hong Kong on 14th August 2008 in a bid to set a new reference time along the highly select Tea Route (Hong Kong / London, via the Cape of Good Hope), the maxi-catamaran in the colours of the LCF Rothschild Group is approaching the coast of South Africa. However, after making highly rapid progress between the Sunda Strait and the island of Rodrigues, the ten sailors have had to face the whims of the Indian Ocean for the past few days. On the approach to the Cape of Good Hope, all minds are trained towards the famous promontory. However, to date, the latter doesn’t seem to want to open its doors to Gitana 13.

    The northern part of the Indian Ocean has afforded the ‘mile devourers’ that make up the crew of Gitana 13 the maximum of pleasure. Thanks to a powerful SE’ly tradewind which blows at this season, the 33 metre maxi-catamaran equipped by Baron Benjamin de Rothschild covered nearly 3,000 miles on a single tack in the space of four days. The whole thing was achieved at an average speed bordering on 26 knots! However, since the start of the week, the sailors that form Gitana Team have known that their future would be coloured rather differently to the start of their journey: “Conditions are still good for the time being and we’re benefiting from a regular air flow of 24 knots in order to make a direct course towards Port Elizabeth, at the south-east tip of Africa. Given our current speed we should make the outskirts of this town early morning on Saturday 30th August. We opted for Port Elizabeth, as the goal is now for Gitana 13 and her crew to seek shelter! A very big low will sweep the tip of Africa this weekend, and it wouldn’t be a good idea to hang around outside…” conceded Lionel Lemonchois.

    Indeed, for several days, the forecasts offshore of the Cape of Good Hope have been deteriorating. Situated along the route of the big southern storms, the African tip can be violent. According to the latest estimates from Sylvain Mondon, sea safety forecaster at Météo France and router to Gitana Team, the expected low could generate average winds of between 45 and 50 knots, and pick up very big seas, with 8 to 10 metre waves on the coast.

    Faced with such numbers there’s no way they can just hope it will pass! Sitting it out for a while in order to be able to continue on their way in conditions of optimal safety is paramount and something they encountered last February during the Route de l’Or. In the latter scenario, Lionel Lemonchois and his men had to halt their progress and wait for five days in the lee of Tierra del Fuego for the weather conditions to calm down off Cape Horn.

    The WSSRC ruling – a body which governs and validates records – forbids the maxi-catamaran from making any stopovers alongside a quay. In this way, in order to remain within the ruling and hope to be able to continue their record attempt once the gale has passed, the ten sailors have to find an alternative: “We have opted for Port Elizabeth because it doesn’t take us too far off Agulhas and the Cape of Good Hope, situated around 300 miles away. The winds during the passage of a front will certainly force us to climb a little northwards but the goal will obviously be to make as few miles as possible so as to be ideally positioned to get back on track again as quickly as we can” explained Lionel. 

    Aboard Gitana 13, the ten experienced sailors are preparing for a difficult 48 hours from Saturday, during which time the performance and the record time will naturally be of secondary importance. 

    Weather analysis at the approach to the African coast
    The weather situation which the men of Gitana Team are confronted with, requires the analysis of the specialist in the subject. Sylvain Mondon thus details this second stage of the Indian Ocean, at the approach to the Cape of Good Hope: “To the south of Madagascar Gitana 13 is sailing along a small zone of high pressure in 7 to 12 knots of S’ly breeze, backing slightly to the SE. This is a tricky passage since it’s very narrow between the two zones of wind. One is a few miles to the north and the other is a few miles to the south. Once the wind backs to the east, Lionel Lemonchois and his crew will proceed with a gybe, which will enable the maxi-catamaran to escape this passage along 30 degrees south. It is then that the pace will pick up progressively in a NE’ly air flow reaching 10 to 15 knots in the evening, before backing to the north as it fills to 20-25 knots on Friday morning. These N’ly winds are produced by a small disturbance which is forming on Thursday, downwind of Lesotho and shifting rapidly eastwards. Whilst finding more established winds again during the course of the night, Gitana 13 will begin to see an influence from the Agulhas current. This current transports warm waters from the Mozambique Channel (between Africa and Madagascar) as far as 40 degrees south as it runs along South Africa. Once past this small scale system, Lionel Lemonchois and his crew will have to prepare to tackle several vast disturbed systems circulating around the roaring forties, which will further hinder the maxi-catamaran’s progress over the last days of August.”

    Today’s figures
    Departure from Hong Kong: Thursday 14th August at 07h55’32” (UT)
    Thursday 28th August at 14h15 (UT)
    Latitude: 30°08.82 S – Longitude: 44°19.20 E
    Speed over 4hrs:  11.3 knots – average speed since the start: 17.39 knots
    Distance left to go: 7,425 miles

    Gitana 13’s crew
    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)

    Gitana 13’s records
    Route de l’Or
      (New York – San Francisco, via Cape Horn): in 43 days 3 minutes 18 seconds (February 2008)
    North Pacific Crossing (San Francisco – Yokohama): in 11 days 12 minutes 55 seconds (April 2008)
    Yokohama – Dalian: 3 days 20 hours 19 minutes and 11 seconds
    Dalian – Qingdao: 23 hours 50 minutes and 20 seconds
    Qingdao – Taiwan: 3 days 52 minutes and 15 seconds
    Taipei – Hong-Kong: 1 day 58 minutes 27 seconds