Vessel speed detecting device

Details Vessel speed detecting device Vessel speed detecting device

1988-10-14

1990-04-10

Woodiel, Donald O.

Measuring and testing

Navigation

Ship's log

340984, G01C 2110

Patent

active

049149466

ABSTRACT:
A vessel speed indicating device including a semiconductor pressure detector that detects dynamic pressure and outputs a signal indicative of this pressure. A speed indicator and calculator is incorporated which senses when the speed is below a speed at which high accuracy can be expected and outputs a warning signal in the event of that condition. Alternatively, when the device is operating in a range where the speed signal is accurate, actual speed is indicated.

REFERENCES:
patent: 4205552 (1980-06-01), Refoy
patent: 4821567 (1989-04-01), Nakamura et al.

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