Question

what is a submarine ​

Answer 1

Answer:

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$<font color= "Red"> 1.</p><p>a warship with a streamlined hull designed to operate completely submerged in the sea for long periods, equipped with a periscope and typically armed with torpedoes or missiles.$

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Answer 2

Answer:

A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. ... Submarines were first widely used during World War I (1914–1918), and are now used in many navies large and small.

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