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A system for determining the position of survivors lost at sea by which an explosion is set off underwater, the time needed for the waves to reach three different locations is calculated, and the position of the explosion is ascertained by triangulation.
[so(und) f(ixing) a(nd) r(anging).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Navigation) a system for determining a position at sea, esp that of survivors of a disaster, by exploding a charge underwater at that point. The times taken for the shock waves to travel through the water to three widely separated shore stations are used to calculate their position
[C20: from so(und) f(ixing) a(nd) r(anging)]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014