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Published: 2018-08-30 11:42:02 +0000 UTC; Views: 27; Favourites: 1; Downloads: 0
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Description
"Sonar (originally an acronym for SOundNavigation And Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels."en.m.wikipedia.org/wiki/Sonar
