Leeway angle indicator

Details Leeway angle indicator Leeway angle indicator

1977-06-09

1978-05-09

Goldstein, Herbert

Measuring and testing

Navigation

Leeway incidence or side-slip

G01C 2100

Patent

active

040880192

ABSTRACT:
A system which indicates the true leeway angle of a vessel, regardless of the heel of the vessel. A generally vertically-extending vane has its lowermost end submersed in the water in which the vessel is floating. The vane is rotatably journaled in a support, and an indicator attached to the upper end thereof for indicating the angle of the vane with respect to the vessel. The support is in turn pivotally mounted along a generally horizontal axis. A servo system is coupled to the vane support and serves to keep the vane aligned in a true vertical orientation.
A speed sensing mechanism may be associated with the vane for obtaining information regarding the speed of the vessel.

REFERENCES:
patent: 7912 (1851-01-01), Wilder
patent: 190045 (1877-04-01), Iffland
patent: 1777869 (1876-05-01), McNabb
patent: 2818730 (1958-01-01), Giannini et al.
patent: 3475957 (1969-11-01), Hiszpanski
Marchay "Sailing Theory and Practice" 1964 pp. 312-313 pub. by Dodd Mead & Co.

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