U.S.S Alligator

U.S.S Alligator

The USS Alligator, the fourth United States Navy ship of that name, is the first known U.S. Navy submarine, and was active during the American Civil War. The first American submarine, built in the Revolutionary War era, was the Turtle; however, the U. S. Navy did not exist when this craft was operational.     - I put a link so you can read more about it please click on the U.S.S above-