A story acted and narrated by men of the Merchant Navy illustrates the way their war is fought: a merchant ship in convoy is sunk by a torpedo; the crew are rescued and later join another ship; and a young seaman among them is motivated to take a gunnery course.
| Directing | J.B. Holmes | Director |
| Directing | Ralph Elton | Assistant Director |
| Camera | H.E. Fowle | Director of Photography |
| Editing | Richard Q. McNaughton | Editor |
| Sound | Constant Lambert | Music |
| Sound | Ken Cameron | Sound Recordist |
| Art | Edward Carrick | Art Direction |