4 Season
24 Episode
Hell Below - Season 4 Episode 4 Edge of Survival
After an enemy attack forces an American submarine into a disastrous dive, the crew struggles to regain control while battling a deadly chemical fire that threatens their limited air supply.
- Year: 2024
- Country: United States of America, Canada
- Genre: Documentary
- Studio: National Geographic, Smithsonian Channel
- Keyword: submarine, world war ii, cold war
- Director:
- Cast: