Method and apparatus to increase the velocity of sailing vessels

Details Method and apparatus to increase the velocity of sailing vessels Method and apparatus to increase the velocity of sailing vessels

1998-01-23

2000-03-07

Basinger, Sherman

Ships

Keels

114129, 114138, 114141, 114149, B63B 338, B63B 4100, B63H 2552

Patent

active

060326034

ABSTRACT:
An asymmetric wing for decreasing the leeward drift of a vessel has two different surfaces, one of which is cambered in cross-section and the other which has less camber in cross-section or flat. The asymmetric wing has a leading edge pointed toward the bow of the vessel and the trailing edge pointed toward the stern of the vessel. The surfaces of the asymmetric wing can be selectively moved to the port or starboard sides of the vessel. For centerboard and sliding keel vessels, a pair of asymmetric wings are installed in trunks, each asymmetric wing having a first cambered surface and a second less cambered surface. The first cambered surfaces of the two asymmetric wings point in opposite directions. At any one time both asymmetric wings are not moved into the water. The asymmetric wing is applicable to vessels without a centerboard or sliding keel trunk. In such a case, a horizontal shaft extends through a single asymmetric wing and the single cambered surface is rotated to either port or starboard. The single asymmetric wing can be supported in a cavity in the keel or in a cavity in a separate support extending from the underside of the hull.

REFERENCES:
patent: 1924871 (1933-06-01), Ludington
patent: 4058076 (1977-11-01), Danshy
patent: 4074646 (1978-02-01), Dorfman
patent: 4280433 (1981-07-01), Haddock
patent: 4421492 (1983-12-01), Leva
patent: 4703708 (1987-11-01), Cohen
patent: 4759308 (1988-07-01), Zander
patent: 5163377 (1992-11-01), Calderon et al.
patent: 5313905 (1994-05-01), Calderon

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