Title :
A hydrocast bottom-finding switch with audible alarm
Author :
Baker, Donald L. ; Fenstermacher, D. Scott
Author_Institution :
Virginia Institute of Marine Science, Gloucester Point, VA, USA
fDate :
7/1/1978 12:00:00 AM
Abstract :
A cheap and mechanically simple bottom-finding device uses a single trip weight and a mercury switch to change the dc resistance of an electromechanical cable when the trip weight hits the sea bottom. The change is detected in a deck unit which sounds a loud alarm on an exterior speaker near the winch operator. The deck unit also displays the cable dc voltage and current.
Keywords :
Sea floor; Sea, electrical equipment; Sea, electromechanical cables; Switches; Connectors; Contacts; Costs; Displays; Gears; Oil filled cables; Switches; Voltage; Winches;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.1978.1145380
