Catamaran with hydrofoils

Details Catamaran with hydrofoils Catamaran with hydrofoils

1983-05-09

1986-08-19

Barefoot, Galen L.

Ships

Displacement-type hull

Multiple hulls

114274, 114280, B63B 112

Patent

active

046062912

ABSTRACT:
The invention discloses a catamaran type boat having two similar boat demi-hulls which are spaced apart and which are substantially parallel, each demi-hull having a base line (BL). The boat further includes a superstructure connecting the two demi-hulls transversely; an open space in the form of a tunnel defined between the superstructure and the two demi-hulls; a longitudinal center of gravity position (LCG) for the boat; at least one trim hydrofoil having a chord line (CL) extending between its leading edge and trailing edge and being located in the stern region of the boat and extending at least partially across the tunnel; and an attachment element for attaching all hydrofoils to the demi-hulls substantially along a transverse plane (TP) which is substantially at right angle to the longitudinal vertical center plane of the boat, and having an angle of between 1.degree. and 7.degree. to the base line (BL) of the demi-hulls at the main foil, and with the hydrofoil chord lines (CL) being at an angle of between 0.degree. and 6.degree. to the transverse plane (TP).

REFERENCES:
patent: 2890672 (1959-06-01), Boericke
patent: 3221697 (1965-12-01), Allegretti
patent: 3417722 (1968-12-01), O'Neill
patent: 3547063 (1970-12-01), Follett
patent: 4056074 (1977-11-01), Sachs

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