Trimaran sailboat

A trimaran sailboat characterized by the ability to limit heeling under various headings to thereby maximize the effective sail area and speed, and comprising

• a central hull,
• a mast mounted on said central hull for supporting a sail,
• a boom assembly comprising a boom having an arcuate curvature along its length, and an outrigger hull mounted at each end of said boom,
• means mounting said boom assembly laterally across said central hull and so as to permit relative lateral movement therebetween, and with the center of curvature of said boom being disposed below said central hull, said mounting means including cable means for limiting canting between said boom assembly and said central hull and comprising first and second cables fixedly interconnected between said outrigger hulls, with the ends of each cable being fixed to opposite hulls at longitudinally spaced points, and pulley means mounted on said central hull and operatively engaging each cable so that each cable includes a medial portion which extends in a direction having a substantial longitudinal component, and
• means for selectively moving said boom assembly laterally with respect to said central hull,
• whereby lateral movement of the boom assembly in the leeward direction results in the leeward outrigger hull being moved outwardly from the central hull and downwardly with respect thereto, to thereby increase the leverage and buoyancy of the leeward outrigger hull and thus minimize heeling of the sailboat.