Watch the full Submarine Alert movie online at no cost in high-definition (HD) quality. No downloads needed—simply click to play and experience the excitement with English subtitles included for your convenience.
Abner Biberman , Dale Van Sickel , Donald Kerr , Dwight Frye , Eddie Kane , Edward Earle , Edward Fielding , Edward Keane , Edward Van Sloan , Edwin Stanley , Fred Sherman , Harry Hayden , Jack Carr , John George , John Miljan , Marc Lawrence , Milburn Stone , Nils Asther , Pat West , Ralph Sanford , Richard Arlen , Robert Middlemass , Roger Pryor , Stanley Smith , Wendy Barri