AC75


The AC75 is a 75ft foiling monohull sailboat class, governing the construction and operation of the yachts to be used in the 2021 America's Cup.
The boat will have advanced features such as canting ballasted T-wing hydrofoils mounted on port and starboard topside longitudinal drums, a double-skinned semi-battened mainsail and no keel.

The rule

Following the 2017 America's Cup, the winning club Royal New Zealand Yacht Squadron accepted a notice of challenge from Circolo della Vela Sicilia that stipulated a monohull in the ship's particulars. Conceptual graphics of a monohull with soft sails and topside canting hydrofoils were proposed on November 21st, 2017, and the first revision of the class rule was published by the defender and the challenger of record on March 29th, 2018. The return to monohulls with soft sails after three America's Cups on multihulls with wingsails is reminiscent of old America's Cup classes and seaworthy traditions, but the rule includes hydrofoils to attract high performance crews and large TV audiences. Under the protocol, each competing club may build two yachts, but two-boat testing is not allowed except for the defender during the challenger selection series. In order to reduce design and testing costs of the class' unique features, the rule specifies foil controlling systems all manufactured by the defending club's team and foil arms all manufactured by the Challenger of Record's builder Persico Group.

The boats