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A corvette is a small, maneuverable, lightly armed warship.
The USS Monitor was the first Union ironclad warship.
Cruisers are a warship. They are larger than a destroyer.
A Corvette
A type of small ship.
A longboat
Cannon
The designer, John Ericsson, proposed the name Monitor for the warship. Monitor means one who admonishes and corrects wrongdoers
There are and have been thousands of American warships. Which one are you asking about? Please repost your question with more clues, say, the name of a battle that the warship was in . . .
Fat pigs!
USS Constitution
Cruiser