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.

08.06.2021

Back to the sea!.

par Gitana

The doors of the Gitana team base opened this Tuesday morning to let the Maxi Edmond de Rothschild get back to its favorite playground. On dry land since late February after the Jules Verne Trophy attempts, the 32-meter giant only spent three months in hibernation. A quick but efficient winter refit during which the team was able to do all the necessary checks, a normal process after having sailed more than 30 000 miles last year (including the second Jules Verne Trophy attempt last January), and to keep optimising the boat. Before its return to competition in August during the Rolex Fastnet, the duo Cammas Caudrelier will train offshore of Lorient and in the near Atlantic. Double-handed training sessions for the Transat Jacques Vabre but also crewed as the team will give another go at the ules Verne Trophy at the end of the year.

The Maxi Edmond de Rotshchild leaves its base under the watchful eye of Yann Riou and his drone.

Relaxation and good mood! In the center, Charles Caudrelier, one of the Maxi Edmond de Rothschild’s skippers, to the left, Cyril Dardashti, Team Manager of the Gitana Team, to the right, Sébastien Sainson, head of the design office of the fire-arrow team.

A summer feeling on the Keroman submarine base for the 2021 launch.

The complete Gitana Team to see the Maxi Edmond de Rothschild being launched! In the center, Cyril Dasdashti, Team Manager, to his right, Charles Caudrelier and to his left Fanck Cammas, the two skippers of the 32-meter giant.