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It depends on the submarine. If measure the distance from the top a fully extended periscope to the bottom of the boat you will get the "Depth of the Keel" at which the periscope is out of the water. Generally between 30 feet and 70 feet.

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11y ago

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Can sonar use in periscope depth?

Yes sonar can be used at periscope depth. Surface ships also have sonar arrays on them. They are usually used to detect submarines.


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A periscope.


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Google it for the diagram and u will understand why.


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periscope


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