Device for the determination of a ship in dock at the time of do

Details Device for the determination of a ship in dock at the time of do Device for the determination of a ship in dock at the time of do

1979-05-31

1981-03-03

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

343 5BD, G01S 1510

Patent

active

042544840

ABSTRACT:
The present invention relates to a device for determination of position of a ship in the dock at docking, based on the principle of reflection of ultrasonic waves from solid bodies in water.
The device includes two pairs of transmitting-receiving converters (1), (1') and (2), (2') of an echo sounder, each of which is connected to a separate indicator (5) and (7) of the echo sounder through a bi-stable switch (4), (6), while the both two-position relay elements (4) and (6) are connected to only one multivibrator (3).

REFERENCES:
patent: 3754247 (1973-08-01), Hansford

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