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This film carried an onscreen dedication to the U.S. Submarine Service. Its working title was Submarine 262. The film was shot on Santa Catalina Island and Coronado Beach, San Diego, CA, at New London, CT, and at the Panama Canal. According to a news item in Film Daily on December 24, 1937, this film was pulled out of national release during the pre-holiday period; Warner Bros. planned to reopen the picture on Christmas Day, to take advantage of the "post-shopping" trade, for a second-run engagement of two-hundred and eight days. The film's pressbook notes portray Paul (played by Ronald Reagan) as a central figure in the plot: a friend of Ann's since childhood and now an "aviation chief petty officer," he vies for her attentions. None of the film's reviews mentions Reagan's character, although he is listed sixth in the Daily Variety preview cast list. According to a modern source, Reagan's part was deleted from the final print; his placement in Daily Variety suggests that his part was in the preview print. According to the pressbook, the story for this film had to be approved by the U.S. Navy and the submarine base at New London, CT, in order to protect navy secrets.