Plastic boat hull and method of boat hull construction

Details Plastic boat hull and method of boat hull construction Plastic boat hull and method of boat hull construction

1995-04-14

1996-05-21

Avila, Stephen

Ships

Displacement-type hull

Multiple hulls

114357, B63B 100

Patent

active

055179347

ABSTRACT:
Disclosed is a plastic boat hull and a method for making a plastic boat hull by roto-molding a thermoplastic material in a mold cavity. The resultant boat hull in a preferred embodiment has an upper hull portion which is identical to the lower hull portion. The forebody, in a preferred embodiment is identical to the afterbody except that one is rotated 90.degree. with respect to the other about the longitudinal axis of the hull. The boat hull shape provides for minimal weight, windage and surface area. The vessel has a wave-piercing bow which creates an asymmetric water plane even though the forebody and afterbody are conceptually identical. The asymmetric water plane reduces pitching of the hull in rough water. In a preferred embodiment, two smaller hulls and one larger hull are combined with cross beams to form a trimaran sailboat.

REFERENCES:
patent: 3438074 (1969-04-01), Goyen
patent: 3450084 (1969-06-01), Gerbracht
patent: 3806972 (1974-04-01), Jackowski
patent: 4136414 (1979-01-01), Popkin
patent: 4389958 (1983-06-01), March

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