Catamarans - A catamaran is a multi-hulled watercraft featuring two parallel hulls of equal size. It is a geometry-stabilized craft, deriving its stability from its wide beam, rather than from a ballasted keel as with a monohull boat. - What is the best catamaran brand? How much does a catamaran cost? Can you sail a catamaran by yourself? Can you solo sail a 50 foot catamaran? What is the largest sailboat that can be sailed by one person? How big of a sailboat is needed to sail around the world?