Measuring the draft of a vessel

Details Measuring the draft of a vessel Measuring the draft of a vessel

1984-01-05

1985-08-13

Woodiel, Donald O.

Measuring and testing

Navigation

Take-off and landing monitors

73302, G01C 2100

Patent

active

045342172

ABSTRACT:
Apparatus has a closed, vented, damping chamber. A gas duct terminates in the damping chamber and air is bubbled through the gas duct. The pressure in the gas duct is read using a manometer, and indicates the distance below the water surface of the exit opening of the gas duct. The damping chamber is connected to the surrounding water by a water duct whose effective cross-sectional area is much less than that of the damping chamber.

REFERENCES:
patent: 2409310 (1946-10-01), Piper
patent: 3334608 (1967-08-01), Nemoto et al.
patent: 3396470 (1968-08-01), Wood
patent: 3548658 (1970-12-01), Lawes et al.

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