Cast 35
Clive Brook
Captain Tom Armitage
John Clements
Lieutenant Cranford
Edward Chapman
Captain Eckersley
Judy Campbell
Lucy Armitage
Penelope Dudley-Ward
Mabel
Edward Rigby
Mr. Matthews
Allan Jeayes
Commander Blount
Harold Warrender
Lt. Commander Martin
David Hutcheson
Captain Sandeman
George Carney
Bates
Charles Farrell
Walker
John Laurie
Gates
George Benson
Parker
Hay Petrie
Minesweeper Skipper
Mervyn Johns
His Mate
Albert Lieven
Commander U.37
John Wengraf
Commander Deutschland
EL
Edward Lexy
Merchantman Skipper
John Glyn-Jones
Mate
JB
John Boxer
German Captain
JC
John Carol
Edmonds
Alec Clunes
Bit Part
Anton Diffring
U-Boat Officer
DE
Derek Elphinstone
Hawkins
Alf Goddard
Bosun's Mate
Stewart Granger
Sutton
Bryan Herbert
Signals Yeoman
Patrick Holt
Holt
JK
James Knight
Admiral
MO
Maire O'Neill
Mary Hogan
CR
Charles Rolfe
Peacock - Wardroom Steward
Harry Terry
Sailor
CW
Charles Williams
'Shorty' Howard
Directing 1
PT
Pen Tennyson
Director
Writing 2
PT
Pen Tennyson
Screenplay
PK
Patrick Kirwan
Screenplay
Art 1
WS
Wilfred Shingleton
Art Direction
Sound 1
EI
Ernest Irving
Music
Crew 2
GK
Günther Krampf
Cinematography
RK
Roy Kellino
Cinematography
Production 1
Michael Balcon
Producer