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Modern sonar equipment such as the
side-scan sonar
(SSS) or multi-beam echosounder, also called sweep sounding system, are used increasingly in the search for underwater obstructions. SSS produces images of the seabed and of
objects on the seabed
. The multi-beam echosounder also records the shallowest depth when passing over the object. So-called object search sonars producing an image of the object on the seabed, similar to SSS, are used for searching.
Single-beam method Echosounder record as a result
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Side-scan sonar method Side-scan sonar image as a result
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Click on graphic to enlarge view.
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