Patent ID: 8109221
Filing Date: 2012-02-07
Classification: B63B

Abstract:
1. A catamaran using a motor and propeller for propulsion, comprising: a pair of substantially parallel separate hulls, one hull being a starboard hull, the other hull being a port hull, the separate hulls having substantially the same length, connected by an intermediate catamaran hull portion, wherein each separate hull has a shape which is asymmetric; and a propulsion system which includes a motor and propeller for driving the catamaran hull, positioned in only one of the separate hulls, defining a propulsion hull, wherein thrust created by action of the propulsion system pushes the catamaran in a port direction if the propulsion system is located in the starboard hull and vice versa, wherein the two separate hulls have different asymmetric shapes which produces a net turning force in a starboard direction if the propulsion system is in the starboard hull and vice versa, counteracting the thrust created by action of the propulsion system in the one separate hull to produce straightline tracking of the beat catamaran during running of the catamaran.