Fleet Admiral Chester W. Nimitz appears as himself to introduce the film, and he is later played in the story by actor
Selmer Jackson. Reagan said in his autobiography that he was disappointed, overall, in the film, having expected a result more like
Destination Tokyo, a major
Warner Bros. submarine film made during World War II. The diminishing status of the feature films that Reagan was being offered, plus his increasing involvement with television, led to his leaving the big screen forever. The
United States Navy provided extensive cooperation by allowing portions of the film to be shot at
Naval Base San Diego and aboard an actual U.S. submarine, possibly . The executive officer of the submarine was
Lloyd Bucher, who would go on to command the during its capture by North Korea in 1968. During the film's production, as USS
Besugo was about to get underway, an argument ensued between the director and one of the unions. There was only a short window of opportunity to maneuver the boat away from the pier, as it was difficult for a submarine tied up in San Diego to get underway while a tide was running.
Besugo was one of the first submarines to employ nylon rope lines, and when stretched, the lines could get about "as big around as a pencil" and become lethal if they broke under strain. The order was given to the helmsman to answer all bells. Reagan happened to be on deck practicing his dialog lines and hollering out, "Ahead one third, starboard back full ..." About this time, the nylon ropes were stretched to their breaking point when an officer gave the command, "All stop, ALL STOP, Goddammit, ALL STOP!" and Reagan, totally oblivious to what was going on, continued to practice his lines, rocking back and forth on his feet with his hands behind his back, as if nothing were wrong. Among the
stock music used in the film were excerpts from
The Caine Mutiny March, composed by
Max Steiner, the main title theme for the 1954 Columbia Pictures feature film
The Caine Mutiny. That film was also about World War II U.S. Navy operations in the Pacific theater; Arthur Franz appears as well in the minor role of Lt. (jg) Paynter. According to
Maurice Manson, who played Vice-Admiral
Charles A. Lockwood, shooting for the film was completed in five days. ==Film premiere==