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.

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.

09.09.2006

Jury’s decision.

After the jury's deliberations, Gitana 11 and Geant have been disqualified for the first round of the Grand Prix du Port de Fécamp. As a result of this decision, there are three trimarans level on points this Friday evening.

par Gitana

After the jury’s deliberations, Gitana 11 and Geant have been disqualified for the first round of the Grand Prix du Port de Fécamp. As a result of this decision, there are three trimarans level on points this Friday evening.

The Complaints Committee was ruling on a complaint from Groupama-2 against Geant and Gitana 11 and an appeal by Geant. The two cases concerned the first leg of the Grand Prix du Port de Fécamp and the way they completed the course. In a nutshell, the race instructions specify that a windward/leeward race may be reduced in two ways: by the sending out of the “S” (Sierra) flag on a boat signifying that the finish is to be judged between the buoy to be rounded and that boat, or by the sending out of the “O” (Oscar) flag indicating that the finish will be judged between two yellow buoys marking the finish line but after having previously passed through the “door” formed by buoys “3” and “3bis” on the course.
De facto, the two crews of Geant and Gitana 11, absorbed by their duel at close quarters, failed to pay attention to the committee boat moored close to mark “2” and flying the “O” flag. Consequently, they completed the course as if it had not been reduced and did not therefore observe the “door”, in contrast to their two pursuers, Groupama-2 and Gitana 12. Loick Peyron and Michel Desjoyeaux have therefore been disqualified for this round, which changes the provisional general ranking based on the day’s three rounds: Gitana 11, Groupama-2 and Gitana 12 are now all equal on points.
Source: Multi Cup

Ranking for Round 1 of the Grand Prix du Port de Fécamp (after Jury):

1- Franck Cammas (Groupama-2) 6 points
2- Thierry Duprey du Vorsent (Gitana 12) 5 points
DSQ- Loick Peyron (Gitana 11) 0 point
DSQ- Michel Desjoyeaux (Geant) 0 point

General Ranking over three rounds of the Grand Prix du Port de Fécamp (after Jury):

1- Loick Peyron (Gitana 11) DSQ+1st+1st = 12 points
2- Franck Cammas (Groupama-2) 1st+2nd+DNF = 12 points
3- Thierry Duprey du Vorsent (Gitana 12) 2nd+4th+3rd = 12 points
4- Michel Desjoyeaux (Geant) DSQ+3rd+2nd = 9 points

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