U.S. Patent Specifications

Abstract

A steering device for watercraft having a hull bottom with sides sloping inwardly and downwardly from the chine to the keel comprising a rudder forming in retracted position a portion of said bottom between said chine and keel adjacent one end thereof, means connecting the forward end of said rudder to said bottom for swinging movement about a hinge axis, said hinge axis sloping forwardly from said chine to said keel in a plane substantially parallel with the plane of said bottom, said rudder being swingablc outwardly and downwardly about said axis into an extended operative position wherein it lies substantially in a vertical plane whereby planing effects causing adverse pitching moments about the craft's centre of gravity are minimized, means for deflecting said rudderto produce a turning moment, and locking means for holding said rudder in closed position to complete the contour of said hull bottom.

Citation

(1955), "U.S. Patent Specifications", Aircraft Engineering and Aerospace Technology, Vol. 27 No. 2, pp. 66-66. https://doi.org/10.1108/eb032530