Up Periscope

Up Periscope is a 1959 World War II drama starring James Garner as a U.S. Navy Frogman fighting the Japanese. The supporting cast features Edmond OBrien, Andra Martin, and Alan Hale, Jr.. The film was written by Richard H. Landau and Robb White from Whites novel, produced by Aubrey Schenk, and directed by Gordon Douglas.

Submarine commander Stevenson whose crews morale is shaky because of the arguably unnecessary death of a crew member on his last mission is ordered to take Braden to Kosrae to photograph a code book located at the Japanese radio station on the island. The skipper originally told Braden that he would have to swim a considerable distance, but upon arrival he decides to enter Lelu Harbor and remain there while Braden carries out his mission.After Braden returns, Stevenson dictates a letter accusing himself of putting his submarine and crew in danger in order to make Bradens mission easier. When they reach Pearl Harbor, Braden obliquely tells Stevenson that the crew lost his letter. Sally Johnson is waiting at the dock to greet Braden. ........

Source: Wikipedia