Speed indicator for fishing gear

Details Speed indicator for fishing gear Speed indicator for fishing gear

1980-02-12

1982-04-13

Woodiel, Donald O.

Measuring and testing

Navigation

Ship's log

367148, G01C 2110

Patent

active

043241352

ABSTRACT:
A water speed sensor suspended from a fishing boat at the depth fishing gear is being trolled actuates an underwater transducer to transmit a sonic signal detected by an underwater transducer mounted on the boat. The output of the transmitter transducer is fed to an averaging detector circuit which triggers a display of the average speed over a predetermined period of the speed sensed by the speed sensor relative to surrounding water at the trolling depth.

REFERENCES:
patent: 3824854 (1974-07-01), Weinstein
patent: 4159644 (1979-07-01), Svala

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