Box rule sailing classes

former class of racing yachts designed for the Volvo Ocean Race

single hull transocean racing yacht

The AC75 ('''America's Cup 75''') is a racing yacht used in the 2021 America's Cup and 37th America's Cup matches and planned to be used for the 38th America's Cup match. The monohulls feature wing-like sailing hydrofoils mounted under the hull, a soft wingsail, and no keel.

The AC50 (defined in the America's Cup rules as AC Class yacht, or ACC) was a wingsail catamaran development rule that governed the construction of the yachts used in the 2017 Louis Vuitton Cup and the 2017 America's Cup. Like the larger AC72s used in the 2013 America's Cup, AC50s used L-shaped daggerboard stabilizers as well as T-shaped rudder elevators that were able to generate enough lift to allow the boats to exit displacement mode in winds in excess of 7kt. Prototype versions of crossbeams, wingsails, appendages, as well as steering and trimming systems had been tested by all syndicates

The AC72 ('''America's Cup 72 class''') is a class of catamarans with wingsails and hydrofoils, built to a box rule for yachts competing in the 2013 Louis Vuitton and the America's Cup races. The class was subsequently replaced by the smaller AC50 class.

class of ocean racing yacht

international racing sailing class