Umberto Nobile
Roald Amundsen
Valeria
Einar Lundborg
Finn Malmgren
Rudolf Samoylovich
Boris Chukhnovskiy
Captain Zappi
Giuseppe Biagi
Adalberto Mariano
Giuseppe Romagna Manoja
Felice Trojani
Natale Cecioni
Alfredo Viglieri
Frantisek Behounek
Kolka Shmidt
Shelagin
Renato Alessandrini (uncredited)
Karl Jõgi (uncredited)
Reporter (uncredited)
Rinborg's Neighbor in the Hospital Room (uncredited)
The Reporter (uncredited)
Amundsen's Servant (uncredited)
Duty Officer (uncredited)
