Ronald Reagan and Nancy Davis (Reagan) made their only film appearance together in this WWII drama about a Pacific-based submarine and how a romantic triangle threatens its mission. Dispatched to the Tsushima Straits to carry out a daring raid that will cut off the Japanese shipping lines, Commander Casey Abbott (Reagan) finds his affections for nurse Helen Blair (Davis) challenged by a rival officer. With Arthur Franz, Joe Turkel. 81 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital mono; Subtitles: English, Japanese; theatrical trailers.