American naval forces are using a port in Iceland as a base for anti-submarine patrols to protect North Atlantic convoys from Nazi subs. The Nazis send undercover agents into the port in a scheme to blow up the entrance to the harbor and keep the patrols blocked in. The officers in charge of the patrols have to find the spies and stop them before they achieve their objective.

Operation Pacific
1951
6.1/10

Hell and High Water
1954
6.0/10

The Enemy Below
1957
7.1/10

Ice Station Zebra
1968
6.3/10

The Bedford Incident
1965
7.0/10

The Sea Wolves
1980
5.9/10

Run Silent, Run Deep
1958
6.9/10

The Spy in Black
1939
6.5/10

Lifeboat
1944
7.4/10

The Cruel Sea
1953
7.0/10

Dishonored
1931
6.8/10

Attack Force Z
1982
6.0/10

633 Squadron
1964
6.2/10

Sink the Bismarck!
1960
6.9/10

The Guns of Navarone
1961
7.3/10

Battleground
1949
6.7/10

Flying Leathernecks
1951
5.9/10

Destination Tokyo
1943
6.9/10

Midway
1976
6.6/10

The Fighting Seabees
1944
6.3/10
The Thin Red Line
1998
7.4/10