A British convoy is trying to elude a group of German U-Boats.
| Actor | Role |
|---|---|
 Edward JuddLt. Cmdr. Tarlton | Lt. Cmdr. Tarlton |
 James Robertson JusticeRAdm. Rainbird | RAdm. Rainbird |
 Laurence PayneLt. Seaton | Lt. Seaton |
 Joachim FuchsbergerCmdr. Scheffler | Cmdr. Scheffler |
| AArthur O'SullivanMike Fitzgerald | Mike Fitzgerald |
 Albert LievenCapt. Neymarck | Capt. Neymarck |
 Richard CarpenterLt. Haskins | Lt. Haskins |
 Nigel GreenChief ERA Lovejoy | Chief ERA Lovejoy |