Zwiastun
Obsada
Judy Campbell
Lucy Armitage
George Carney
Bates
Charles Farrell
Walker
Mervyn Johns
His Mate
John Wengraf
Commander Deutschland
Bryan Herbert
Signals Yeoman
Allan Jeayes
Commander Blount
Stewart Granger
Sutton
Anton Diffring
U-Boat Officer
John Clements
Lieutenant Cranford
Edward Rigby
Mr. Matthews
John Laurie
Gates
George Benson
Parker
Hay Petrie
Minesweeper Skipper
Alec Clunes
Bit Part
Maire O'Neill
Mary Hogan
Clive Brook
Captain Tom Armitage
Michael Wilding
Dot
John Glyn-Jones
Mate
Penelope Dudley-Ward
Mabel
David Hutcheson
Captain Sandeman
Albert Lieven
Commander U.37
Patrick Holt
Holt
Harold Warrender
Lt. Commander Martin
Harry Terry
Sailor
Edward Chapman
Captain Eckersley