The crew of a submarine is trapped on the sea floor when it sinks. How can they be rescued before they run out of air?
| Directing | Roy Ward Baker | Director |
| Production | Jay Lewis | Producer |
| Costume & Make-Up | Tony Sforzini | Makeup Artist |
| Writing | W.E. Fairchild | Writer |
| Writing | Kenneth Woollard | Theatre Play |
| Camera | Harold Haysom | Camera Operator |
| Camera | Desmond Dickinson | Director of Photography |
| Editing | Alan Osbiston | Editor |
| Sound | George Croll | Sound |
| Production | Tina L. Scott | Casting |
| Art | Alex Vetchinsky | Art Direction |
| Sound | John W. Mitchell | Sound |
| Sound | Jack Slade | Sound |
| Camera | H.E. Fowle | Additional Photography |
| Production | Herbert Smith | Production Manager |
