Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Keith Louis Featherstone Cronwright0
Date of Patent
June 18, 2019
0Patent Application Number
157387500
Date Filed
May 16, 2016
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A sailing vessel is disclosed which comprises a hull, a keel depending from the hull and a mast. A ballast bulb is provided at the lower end of the keel. A first control mechanisms is provided for rotating the ballast bulb about a transverse axis to change the angle of attack of the bulb. A second control mechanism is provided for rotating the bulb about a longitudinal axis of the vessel.
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