During WWII, the British Royal Navy uses a captured German submarine to trick the enemy and protect their supply convoy.
C.M. Pennington-Richards
Director
Edward Judd
Lt. Cmdr. Tarlton
James Robertson Justice
RAdm. Rainbird
Laurence Payne
Lt. Seaton
Joachim Fuchsberger
Cmdr. Scheffler
Arthur O'Sullivan
Mike Fitzgerald