Housatonic

…successfully attacked the Union sloop Housatonic with a spar torpedo on February 17, 1864, sinking the vessel. The Hunley, however, was lost shortly after the attack, along with its eight crewmen.

…submarine attacked the Union warship Housatonic in Charleston harbour. The torpedo’s detonation exploded the warship’s magazines: the Housatonic sank in shallow water with the loss of five men, but the Hunley was also destroyed by the explosion, and its crew was killed.