4.9
Cmdr. Robert 'Bob' Kingsley
Anna Marie Von Steuben
Fraulein Lolita
Chief Mike 'Guns' Costello
'Lug' Kaufman
Ens. Richard 'Dick' Cabot (as Gaylord Pendleton)
Chief Joe Cobb
Lt. 'Mac' McGregor
Baron Ernst von Steuben (U-boat commander)
Franz Shiller
German Chief Petty Officer (uncredited)
Naval Reservist (uncredited)
Naval Reservist/Swimmer and Diver (uncredited)
Mugs O'Flaherty (uncredited)
Eric - Captain of Trawler (uncredited)
Fritz Kampf (Second Officer of U-172) (uncredited)
Hoffman (uncredited)
Elmer Harrigan (uncredited)
Bugler on Gun Crew (uncredited)
Merkel (uncredited)
'Butch' Wagner (uncredited)
'Skits' Reilly (uncredited)
Gunner (uncredited)
German Officer (uncredited)
Adolph Brucker (uncredited)
Gunner and drill sergeant (uncredited)
Winkler (uncredited)
Levinsky (uncredited)
