After losing a submarine and fifty crew in a battle with a German ship during WWII, a Royal Navy officer gets a second chance in a daring raid with midget subs.
James Caan
as Cmdr. Richard Bolton, RNVR
David Sumner
as Lt. Davies R.N.V.R
Norman Bowler
as Sub-Lt. Pennington, RN
Paul Young
as Leading Seaman Quentin
Brian Grellis
as CPO Barquist X 3
William Dysart
as Lt. Robert Talbot Gogan R.N.R.
John Kelland
as Sub-Lt. Keith Willis, RNVR
Kenneth Farrington
as CPO Boker Knowles
Carl Rigg
as CPO Norman Kennedy
Steve Kirby
as Leading Seaman X-2
Nick Tate
as Leading Seaman X-1
George Pravda
as Capt. Erlich of the 'Lindendorf'
