Curd Jürgens as Kapitän Markus Jolly

Heinz Reincke as Oliver Kniehase

Johanna von Koczian as Dr. Katrin Andersen

Herbert Fleischmann as Nico

Sieghardt Rupp as Rodrigo

Angelika Ott as Angelika

Christine Schuberth as Vroni

Ilse Peternell as Lisbeth

Fritz Tillmann as Konsul Armin von Prossnitz

Gerhart Lippert as Klaus Ritter

Rolf Olsen as Polizeipräsident Herculano

Friedrich Joloff as Dr. Albeniz

Emilio Schuberth as Gilbert Paon

James Graser as James Sanders

Elisabeth Flickenschildt as Lady Scarlett

Poldo Bendandi as Chief Tax Officer (uncredited)

Beryl Cunningham as Chiquita (uncredited)

Thomas Danneberg as Klaus Ritter (voice) (uncredited)

Hans Hessling as Polizeipräsident Herculano (voice) (uncredited)

Gerda-Maria Jürgens as Frau Kuschke (uncredited)

Giulio Marchetti as Dr. Castell (uncredited)

Lenka Novak as Nurse (uncredited)

Janine Reynaud as Woman in Cabin of Yacht (uncredited)

Bill Vanders as Jolly's Crewman (uncredited)

Ernest Van-Mohr as (uncredited)