Cast
James Caan
Cmdr. Richard Bolton, RNVR
David Sumner
Lt. Davies R.N.V.R
Norman Bowler
Sub-Lt. Pennington, RN
Paul Young
Leading Seaman Quentin
Brian Grellis
CPO Barquist X 3
William Dysart
Lt. Robert Talbot Gogan R.N.R.
John Kelland
Sub-Lt. Keith Willis, RNVR
Kenneth Farrington
CPO Boker Knowles
Carl Rigg
CPO Norman Kennedy
Steve Kirby
Leading Seaman X-2
Nick Tate
Leading Seaman X-1
George Pravda
Capt. Erlich of the 'Lindendorf'
Rupert Davies
Vice Admiral Redmayne (uncredited)
Keith Alexander
Sub. Lt. X-3
Diana Beevers
WRNS Officer (uncredited)
Paul Hansard
Cmdr. Steiner (uncredited)
Luke Hanson
German Lieutenant (uncredited)
Desmond Jordan
Naval Doctor (uncredited)
Dennis Mayers
Sub-Lieutenant on X-1 (uncredited)
Doug Robinson
Seaman in Self-defence Demonstration (uncredited)
George Roubicek
Redmayne's Flag Officer (uncredited)
Richard Steele
Captain in Redmayne's Office (uncredited)
