depth sounder


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depth sounder

[′depth ‚sau̇nd·ər]
(engineering)
An instrument for mechanically measuring the depth of the sea beneath a ship.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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He devised improved scientific instruments--thermometers, telescopes, microscopes, pendulums and pumps--as well as a pedometer, a marine barometer, a depth sounder and various navigational instruments.
Electrical switchboards were provided by Con-Select and electronic equipment from Euruno includes FAX-207 Weather Fax, Danavtex, FR-8111 D4 radars with ARPA, GP-31 and GP-80 GPS, GP-582L depth sounder, FS-5000 SSB, FS-1562/15 SSB, and FM-8500 VHF.
tale: "I was fishing for rock cod near Point Conception (near Santa Barbara), driving in circles, zig-zags and figure-eights, staring at my depth sounder, looking for fish.
If you don't have specific spots in mind, just keep your eyes on your depth sounder with it zoomed into the bottom.
If we had had a hand-held electronic depth sounder on board we might have avoided one of the most dangerous incidents of my sailing career.
Using your depth sounder or your GPS locate the drop off that lies west of the North or South Bimini.
Integrated with a depth sounder, once a depth to follow is set the autopilot will take care of the rest.
Position yourself where you see fish marking on your depth sounder or where you see feeding or rolling tarpon.
Use the depth sounder, the GPS and the crew as lookouts, and be wary.