Patent ID: 6779473
Filing Date: 2004-08-24
Classification: B63B,B63H,Y02T

Abstract:
A winged sailing craft comprising:a body having an essentially horizontal longitudinal axis operable by a crew along a surface of water, land, ice or snow; a spar that is attached to the body; the spar moveable in roll, pitch and yaw; a boom having a longitudinal axis and connected to the spar, the boom axially moveable in the spar; a pair of wings each having an inboard and separated from an outboard end by means of a mast extending lengthwise there between, each inboard and of the masts attached to the boom; the wings having an airfoil section, chord wise and having planar symmetry about he boom axis; the wings creating an angle that the spar always bisects; the angle being changeable by pivoting the masts on the boom.