Zbigniew Józefowicz as Antoni Barnat

Zbigniew Cybulski as Rafał Grabień

Urszula Modrzyńska as Teresa

Antonina Barczewska as Nurse

Mieczysław Gajda as Crew Member

Stanisław Jaworski as Doctor

Jerzy Kaczmarek as Jurek

Janusz Kłosiński as Ship Captain

Roman Kłosowski as Wacek

Adam Kwiatkowski as Pałamarz

Józef Łodyński as Radiotelegraphist

Lech Madaliński as Czeluśniak

Konrad Morawski as Diver

Jadwiga Prolińska as Irena

Czesław Piaskowski as Adam

Roman Polanski as Romek

Andrzej Szalawski as German Mechanic

Władysław Staszewski as Orbach

Henryk Staszewski as Crew Member

Kazimierz Wichniarz as Feluś

Zygmunt Zintel as Mundek

Seweryn Butrym as German Officer (uncredited)

Jarema Stępowski as Drunk (uncredited)

Gustaw Lutkiewicz as Singing German Officer (uncredited)

Tadeusz Teodorczyk as German Soldier (uncredited)