Inter 18 and Inter 20

In the beginning, sports catamarans were simple: about 16 to 18 feet long, with reliable but unsophisticated controls, and sailed by adolescents craving excitement. These young sailors became adults, gained some weight (inevitably) and decided that these fast catamarans had to be raced. Catamaran sailing, now racing, became more fun, and more work, but who cared? They wanted larger catamarans with racing enhancements in hull design and sail controls.