J Class Article Index for
J
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Information About

J Class




The ''J'' designation refers to the class of Yacht defined by its sail area, Displacement , length, and Mast height, formally defined in the Universal Rule . When designing a J-class yacht builders would have to decide which characteristics to maximize to build the ideal yacht.


America's Cup

All three America's Cup races featuring J-class boats were won by the United States . In 1930 the Enterprise defeated the Shamrock V of Ireland . In 1934 the Rainbow defeated the Endeavour of Britain . And in 1937 , the peak of J-class yacht racing, the Ranger defeated the Endeavour II of Britain.


SPECIFICATIONS

Only 10 yachts were ever built or converted to conform to J-class specifications:

  • Disp: Displacement

  • LOA: Length overall

  • LWA: Length at water line