On screen
Cast
42 credited performers
John Mills
Lt. Taylor RN
Eric Portman
L/S Hobson
Louis Bradfield
First Officer - Lt. Brace, R.N.R.
Ronald Millar
Third Officer - Lt. Johnson, RNVR
Jack Watling
Navigating Officer - Lt. Gordon, R.N.
Reginald Purdell
Coxwain - C / P.O. Dabbs
Caven Watson
Chief Engine Room Artificer - C / P.O. Duncan
Niall MacGinnis
Torpedo Gunner's Mate - C / P.O. Mike Corrigan
Leslie Weston
Leading Torpedo Operator - L / S Tug Wilson
Norman Williams
Periscope Operator - 'Canada'
Lionel Grose
Torpedo Operator - 'Spud'
David Peel
Helmsman - 'Oxford'
Philip Godfrey
Steward - 'Flunkey'
Walter Gotell
Luftwaffe Captain
Marie Ault
Character not listed
Victor Beaumont
Character not listed
Frederick Burtwell
Character not listed
Franklyn Bennett
Character not listed
George Cross
Character not listed
Kenneth Evans
Character not listed
Ian Fleming
Character not listed
Philip Friend
Character not listed
Pat Hagan
Character not listed
Vincent Holman
Character not listed
Joan Hopkins
Character not listed
Vi Kaley
Character not listed
Olaf Olsen
Character not listed
Bryan Powley
Character not listed
John Salew
Character not listed
Gerik Schjelderup
Character not listed
Johnnie Schofield
Character not listed
Ian Selby
Character not listed
John Slater
Character not listed
Joan Sterndale-Bennett
Character not listed
Vi Stevens
Character not listed
Merle Tottenham
Character not listed
David Trickett
Character not listed
Robert Brooks Turner
Character not listed
Beatrice Varley
Character not listed
Ben Williams
Character not listed
Ian Wilson
Character not listed
Josephine Wilson
Character not listed