CSS Virginia [ironclad warship, Civil War], aka CSS Merrimack after the wooden ship that was purposefully scuttled in shallow water to provide the below-line hull. Launched first year of the American Civil War
Cairo, Civil War Ironclad, Sunk on Dec in 12 min. on the Yazoo River with 168 men on board (no casualties). Was brought up off the river bottom 102 yrs later in 1964 Vicksburg MS (National Park) Aug 1994
Hunley was a submarine of the Confederate States of America that played a small part in the American Civil War, but a large role in the history of naval warfare. It was the first combat submarine to sink an enemy warship.