Planing hull for multi-hull sail boats

Details Planing hull for multi-hull sail boats Planing hull for multi-hull sail boats

1989-04-12

1990-03-13

Basinger, Sherman D.

Ships

Displacement-type hull

114 61, B63B 110

Patent

active

049075187

ABSTRACT:
A multi-hull sailing craft has a pair of essentially aligned parallel interconnecting air foil shaped hulls. Each hull has a vertical flat outwardly curved inner side surface for generating lift and terminating at a lower edge which defines the keel line. The outer side terminates at its lower edge along a chine line. A flat bottom planing surface extends between the chine and the keel, and is downwardly inclined at a substantial dead rise angle to produce both a substantial dynamic buoyant force for moving the hull upwardly and onto the bow wave, and for supplying a lateral force to supplement the lifting force generating along the inner surface. The resulting intersection of the three surfaces producing a keel line which has a convex curvature in both the horizontal and vertical plane.

REFERENCES:
patent: 4498409 (1985-02-01), Edel
patent: 4708077 (1987-11-01), Balquet et al.
patent: 4811676 (1989-03-01), Franke
patent: 4813366 (1989-03-01), Elder
patent: 4817548 (1989-04-01), Guergen
patent: 4836120 (1989-06-01), Murphy

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