On this day in history, February 17th 1864:
February 17th is the anniversary of the attack and disappearance of the historic Civil War submarine C.S.S. Hunley. On February 17, 1864, the Hunley made history as the first combat submarine to sink a warship.-
[scetv.org]
You had a submarine during the Civil War?! I'd be guessing chances were that relatively primitive technology did it in more than through it getting a hit. Although I could be wrong.