A British submarine on patrol is accidentally rammed by a merchant ship, that tears a big hole in in sub which sinks trapping the crew.
| Actor | Role |
|---|---|
| JJohn BattenNot listed | Not listed |
| SSydney SeawardNot listed | Not listed |
| JJames EnstoneNot listed | Not listed |
 Syd CrossleyNot listed | Not listed |
| JJohn HuntNot listed | Not listed |
| EEdward GeeNot listed | Not listed |
| CCharles PeacheyNot listed | Not listed |
| AAtholl FlemingNot listed | Not listed |
 Lesley WareingNot listed | Not listed |