Sailboat keel having a cantilevered trailing edge flap

Details Sailboat keel having a cantilevered trailing edge flap Sailboat keel having a cantilevered trailing edge flap

1986-07-25

1987-08-18

Peters, Jr., Joseph F.

Ships

Keels

B63B 338

Patent

active

046869239

ABSTRACT:
A keel assembly for a sailboat, the keel assembly having wing-like appendages at the bottom of a fixed keel and having a rotatable flap located at the trailing edge of the fixed keel. The flap includes a cantilevered portion extending below the vertical portion of the keel. In operation, the flap is rotated a few degrees to one side or the other of the center line of the boat so as to create an asymmetrically shaped keel so that the keel and hull exhibit a high lift to drag ratio and efficient sailing performance.

REFERENCES:
patent: 3080845 (1963-03-01), Pollak
patent: 4077077 (1978-03-01), Harper
patent: 4089286 (1978-05-01), Scheel
patent: 4453484 (1984-06-01), Englund

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