Ocean Fifty, first known as Multi50, is the class of 50-foot (15.24 m) offshore racing multihulls, with catamarans and trimarans sailing under a restricted rule. It sits between smaller multihulls and the Ultims, offering fast boats at a more affordable cost.
On 16 March 2021 the class was renamed Ocean Fifty. The change led to a first dedicated race, the Pro Sailing Tour, whose first edition began in May 2021, and to the Ocean Fifty Series championship, a points ranking that rewards the circuit's teams each season.
Ocean Fifties also take part in major events: the Route du Rhum (for the category since 1998), the Transat Jacques Vabre (since 1997), the Armen Race (since 2011), the Transat Québec-Saint-Malo (since 2016), the Fastnet Race, the Trophée des Multicoques in the Bay of Saint-Brieuc and, since 2025, the 24H Ultim in Lorient. By 2028 the class is due to join the Solitaire du Figaro, giving its skippers a new solo event.
In the 2024 season ranking, Primonial (Sébastien Rogues) finished ahead of Koesio (Erwan Le Roux) and Realites (Fabrice Cahierc). In 2025, Viabilis Oceans (Baptiste Hulin) won ahead of Solidaires en peloton (Thibaut Vauchel-Camus) and Le Rire médecin - Lamotte (Luke Berry). The 2026 calendar has five acts, from Sainte-Maxime to the Route du Rhum.
Ocean Fifty is not a one-design: it is a restricted rule. Maximum dimensions are 15.24 m (50 ft) for length and for beam, 3.50 m for draft and 23.77 m for air draft.
The rule forbids canting the mast and using certain costly materials such as titanium, limits carbon on some fittings, and caps rudders and daggerboards at four. Two one-design foils are allowed. Each boat must carry six sails, including a storm jib and a mainsail.
Source: Ocean Fifty (opens in a new tab) (Wikipédia)
31 October 2026 · Announcement
Ocean Fifty due to join the Solitaire du Figaro in 2028
According to the Route du Rhum, the Ocean Fifty class will join the Solitaire du Figaro by 2028.
7 sources · updated 9 Nov 2026
Correction
Source: OCEAN FIFTY : la fièvre du samedi soir (opens in a new tab)
Event added
Source: OCEAN FIFTY : la fièvre du samedi soir (opens in a new tab)
Correction
Source: Sillage, charte graphique : palette des classes (opens in a new tab)
Correction
External identifier
External identifier
External identifier
Source: Multi50 (opens in a new tab)
External identifier
Descriptions merged