Willy Birgel

as Rudolf Diesel

Hilde Weissner

as Martha Diesel, seine Frau

Paul Wegener

as Direktor Buz

Josef Sieber

as Martin

Arthur Schröder

as Lucien Vogel

Erich Ponto

as Theodor Diesel

Hilde von Stolz

as Frau von Lorrenz

Hubert von Meyerinck

as Herr von Lorrenz

Werner Pledath

as Prof. Linde

Herbert Gernot

as Krumper

Walter Janssen

as Prof. Barnickel

Karl-Heinz Peters

as Ingenieur Scheuermann

Heinrich Marlow

as Prof. Lüders

Heinrich Troxbömker

as Krupp

Albert Florath

as Arzt

Paul Westermeier

as Fleischermeister

Franz Arzdorf

as Führer im Maschinenpavillon

Roma Bahn

as Segelschiff-Passagierin

Leo Peukert

as alter Schlepperkapitän

Eduard Wenck

as Schiffsheizer

Viggo Larsen

as Ein Professor

Hermann Pfeiffer

as