Patent ID: 8166898

Claim:
A hydrofoil windsurfer comprising: a buoyant body for supporting a single, standing human user; a sail for propulsion; a mast for supporting said sail; a joint whereby said mast is coupled to said buoyant body, said joint allowing rotation of said mast on its own axis, and tilting of said mast in a vertical plane substantially aligned with the centerline of said buoyant body through a 180-degree range, but substantially prohibiting lateral tilting of said mast; and a front hydrofoil coupled to said buoyant body by means of a front strut and a rear hydrofoil coupled to said buoyant body by means of a rear strut, disposed so that they generate lift in a generally vertical direction; whereby the lack of lateral tilting capability of said joint prevents said buoyant body from excessively rolling independently of said mast and said sail; and further comprising a depth regulating means for automatically adjusting the depth of said hydrofoils beneath the surface of the water, said depth regulating means comprising a surface tracking body associated with said front hydrofoil and capable of adjusting the angle of attack of said front hydrofoil.