Episode Detail: Raise the Hunley!; Search for Battleship Bismarck; U-Boats: Terror on Our Shores - National Geographic Explorer
Archaeologist Bob Neyland attempts to salvage the Confederate submarine CSS H.L. Hunley from the bottom of the sea. Also: explorer Dr. Robert Ballard hunts for the legendary German warship Bismarck; the damage wrought by German U-boats is recalled.