Season 2
3 episodes
1Sunken Weapons of War
An underwater look at the weapon that destroyed one of the Civil War's greatest ships, as well as the torpedo technology that changed military warfare.
2America's Lost Treasures
Experts explore how the history of America is hidden beneath its harbours, shorelines and street.
3Disasters at Sea
The team explores the watery graves of passenger ships and war machines as they investigate what led to such shocking maritime disasters.