Ships – Ballasting – Shifting weights
Patent
1984-12-21
1986-07-15
Blix, Trygve M.
Ships
Ballasting
Shifting weights
114126, 114140, B63B 3902
Patent
active
045999643
ABSTRACT:
A new and improved sailboat hull for traditionally designed, single hull sailboats having a generally tapered lower hull section, whereby the lower hull section is extended rearward beneath the rudder to a point aft of the visible stern. The lower hull extension contains ballast so that the center of gravity of the sailboat is moved toward the stern. The lower hull extension is telescopically adjustable with a direct, corresponding effect on ballast. Horizontal fins extend laterally from either side of the lower hull extension which also has a trim tab attached to its aft end.
REFERENCES:
patent: 189420 (1877-04-01), Berghold
patent: 1331202 (1920-02-01), Kitchen et al.
patent: 1595949 (1926-08-01), Kirin
patent: 2218264 (1940-10-01), Luce
patent: 4376416 (1983-03-01), Carver
Holbrow Frederick W.
Kenney Thomas A.
Avila Stephen P.
Blix Trygve M.
McGonagle John P.
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