Cast (10)
George O’BrienCmdr. Robert 'Bob' Kingsley
Marion LessingAnna Marie Von Steuben
Mona MarisFraulein Lolita
Walter C. KellyChief Mike 'Guns' Costello
Warren Hymer'Lug' Kaufman
Steve PendletonEns. Richard 'Dick' Cabot (as Gaylord Pendleton)
Walter McGrailChief Joe Cobb
Larry KentLt. 'Mac' McGregor
Henry VictorBaron Ernst von Steuben (U-boat commander)
John LoderFranz Shiller