The first submarine ever credited with sinking an enemy ship was the Confederate navy’s H. L. Hunley, which, during the American Civil War, sank the Union navy’s frigate, the Housatonic. The Hunley, propelled by a crew of eight using hand cranks to turn its propeller, approached the Housatonic after dark, carrying a large cache of explosives at the end of a thirty-foot spar jutting from its bow. The explosion destroyed the frigate; it also sank the Hunley, which disappeared with all hands. This fate was more or less foretold, however. During trials before its launch, the Hunley had foundered
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