Bela Lugosi as Anton Lorenzen

Shirley Grey as Sarah Briggs

Arthur Margetson as Capt. Benjamin Briggs

Edmund Willard as Toby Bilson

Dennis Hoey as Tom Goodschild

George Mozart as Tommy Duggan

Johnnie Schofield as Peter Tooley

Gunner Moir as Ponta Katz

Ben Welden as Boas 'Sailor' Hoffman

Clifford McLaglen as Capt. Jim Morehead

Bruce Gordon as Olly Deveau

Gibson Gowland as Andy Gilling

Terence de Marney as Charlie Kaye

Edgar Pierce as Arian Harbens

Herbert Cameron as Volkerk Grot

Wilfred Essex as Horatio Sprague

James Carew as James Winchester

Monti DeLyle as Portunato

Alec Fraser as Cmdr. Mahon

Lucius Blake as Sailor

Charles Mortimer as Attorney General

Graham Soutten as Jack Sampson

J.B. Williams as The Judge