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How is a submersible made heavier to allow it to descend?

In: Science, Submarines [Edit categories]

Answer:

Some kinds of submarines use ballast tanks, they are tanks on the subamarine which the submarine fills with water to make it sink or filled with air to make it rise.

First answer by Griffy95. Last edit by Griffy95. Contributor trust: 1 [recommend contributor ]. Question popularity: 0 [recommend question].

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