Ships – Watercraft with means used in providing sailpower – Having specifically defined hull shape
Patent
1995-10-13
1997-01-14
Avila, Stephen
Ships
Watercraft with means used in providing sailpower
Having specifically defined hull shape
114163, B63B 3500
Patent
active
055928927
ABSTRACT:
A multihull windsurfer providing increased sailing stability, exceptional steerability and providing a moveable mast allowing for an adjustable sail carrying capacity. The preferred embodiment is a catamaran with hulls that are elongated, upwardly curved and substantially triangular in transverse cross-section, thereby forming keels. Dual rudders, disposed in tandem, are mounted under each hull and are controlled through a steering assembly. One rudder in each pair is removable so that the steering sensitivity of the boat may be varied. The mast is fully articulating and is disposed with a sail and a manually engageable boom. The mast is carried on a mast mount comprising a mast track assembly which is slidably adjustable fore and aft, so that the mast may be moved forward or rearward on the vessel, thereby providing for an adjustable sail area. The hulls are attached to and held substantially parallel by a platform providing deck space for the sailor. The steering assembly may be connected to the platform by resilient means that automatically return the assembly to a center position after a turn, thereby bringing the rudders to an amidships position.
REFERENCES:
patent: 4100870 (1978-07-01), Prade
patent: 4349340 (1982-09-01), Hoffmann
patent: 4524709 (1985-06-01), McKenna
patent: 4715306 (1987-12-01), Horais
patent: 4771723 (1988-09-01), Friesen
patent: 4930433 (1990-06-01), Tirez
patent: 5024177 (1991-06-01), Winter et al.
patent: 5038694 (1991-08-01), Yamada et al.
patent: 5042411 (1991-08-01), Krolczyk
Avila Stephen
Estevez, Atty. Enrique G.
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