We Dive at Dawn (1943)

Amidst the chaos of WWII, Lt. Freddie Taylor, portrayed by John Mills, leads the crew of the British submarine Sea Tiger on a perilous mission in the Baltic Sea. Abruptly torn from their families, they are tasked with intercepting the formidable Nazi battleship Brandenburg. During the confrontation, a German destroyer damages their sub, causing a dangerous fuel leak that jeopardizes their return to Britain. With limited time and options, seaman James Hobson devises a desperate plan that could mean the difference between doom and survival as they navigate treacherous waters off the Danish coast.