Classes/Open 50ClassesO5ClassesShareO5ClassMonohullO5O5ClassMonohullOpen 50Monohull ocean-racing class of about 50 feet, originating from IMOCA (hence the name IMOCA 50) and a former ISAF international class.ShareBoats38Generations—Boats · Generations38 · —Races2Skippers69Founded—ProfileRacesBoatsSkippersStatistics