The Deed of Gift specifies only that if the yachts shall have one mast, they shall be of at least 40 feet on the load waterline, and no more than 90 feet, and if they shall be of more than one mast, shall be of at least 80 feet and no more than 115 feet. The Protocol specifies the yacht of choice, and is open to negotiaton between the Defender and the Challenger of Record. As best as I can tell, the Deed of Gift makes no requirements concerning number of hulls, and apparently the courts agreed when they approved the victory by the Stars and Stripes catamaran of Dennis Conner a few years back.

sail fast