Quiz: Remember the definition of mal de mer?

depth finder

depth finder in Science
depth finder
An instrument used to measure the depth of water, especially by radar, sonar, or ultrasound.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Encyclopedia Article for depth finder

echo sounder

device used on ships to determine the depth of water by measuring the time it takes a sound (sonic pulse) produced just below the water surface to return, or echo, from the bottom of the body of water. Sonic depth finders are in operation on practically every important class of ship, naval and merchant, and are also used on small craft.

Learn more about echo sounder with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Word Value for depth

Scrabble Words With Friends