Cast: Alvin John; Anderson George; Anderson Warner; Ashe Warren; Bartell Harry; Bissell Whit; Blackwell Jr. Carlyle; Borzage Danny; Challee William; Chandler Lane; Clark Cliff; Clark Dane; Creasman Bob; Cross Warren; Cruz Angelo; Daves Michael; Douglas Warren; Evans Jimmy; Fong Benson; Foo Wing; Forrest John; Forsythe John; Garfield John; Got Roland; Grant Cary; Grant Kirby; Gunn Herbert; Hale Alan; Hall Eddie; Hudson William; Hughes Charles Anthony; Hunter Bill; Hutton Robert; Jacques Ted; Kennedy Bill; Langton Paul; Lee Eddie; Leong James B.; Lloyd George; Lowell Bob; Malis Cy; Marcelle Lou; McColm Ralph; Mower Jack; Murphy Maurice; O’Brien William J.; O’Connor Frank; Parry Paul; Prince William; Prosser Hugh; Ridgely John; Robotham George; Sell Bernard; Sherlock Charles; Steers Larry; Stevens Mark; Sullivan Charles; Sung Ya Sing; Sylvester John; Tang Frank; Thompson Charles S.; Tully Tom; Ward Jay; Watkin Pierre; Whiteman Russ; Whitney John; Whitney Peter; Wilson Alan; Wong Bruce; York Duke; Barlow Joy; Daves Deborah; Emerson Faye; Landa Mary; Parker Eleanor; Schoemer Dorothy; Wald Jerry; Warner Jack L.; Daves Delmer; Fisher Steve; Maltz Albert; Glennon Bert; Waxman Franz; Barjansky Vladimir; Nyby Christian; Compton Phillip; Leicester James
Taglines: Explosive ! . . . And As Big As The Broad Pacific !
Storyline: Made during World War II, this chronicles a voyage of a U.S. submarine on a secret mission to the very shores of Japan. Much of the film is spent developing the cast of characters that populate the sub.
The U.S.S. Copperfin sails under secret orders for Tokyo Bay in the early days of World War II. The submarine’s mission is to enter the bay undetected and place a landing party ashore to obtain information vital to the upcoming Doolittle air raid on Tokyo.
During World War II, Captain Cassidy and his crew of submariners are ordered into Tokyo Bay on a secret mission. They are to gather information in advance of the planned bombing of Tokyo. Along the way, the crew learn about each other as they face the enemy and some of them lose their lives. After getting the information they need,they face the harrowing task of getting free once their presence is discovered.