Exploring the wreckage of the USS Mississinewa, which was sunk near the Caroline Islands in 1944 by a Japanese torpedo manually guided on a suicide mission.

Exploring the wreckage of Duplex Drive Tanks that sank off the coast of Normandy during the D-Day invasion on June 6, 1944.

Exploring the World War II minesweeper YMS-304, which was sunk off the coast of Normandy a month after the D-Day invasion.

This episode explores a ferryboat that sank off the coast of Sicily in 1996.

It was the first submarine ever to sink an enemy ship, but after only one successful mission the H.L. Hunley vanished with its crew and lay hidden for more than a century. The circumstances surrounding the disappearance of the Confederacy’s secret weapon have remained an enduring mystery since the Civil War era, but now NGC has uncovered what may have brought it down.