The Ludicrously Dangerous Submarine that Somehow Became the First Sub to Sink Another Ship in Combat
20:07
Who Invented the Submarine?
16:10
How Did They Navigate the Titanic?
19:22
The H.L. Hunley - A Surviving Civil War Submarine
12:45
The Bizarre Tale of the Spontaneously Exploding Submarines
13:35
Soviet Nuclear Submarine Defects to the United States, 1984 - Animated
17:38
Hadrian’s Wall: The Mysterious 38th Parallel for Roman Legionaries and British Barbarians
25:36
Steam Submarines: Incredibly Dangerous REAL Designs
18:28