 Wieńczysław GlińskiCaptain Grabiński | Captain Grabiński |
 Aleksander SewrukCommander Kozłowski | Commander Kozłowski |
 Jan MachulskiLieutenant Pilecki | Lieutenant Pilecki |
 Roland GłowackiLieutenant Roland | Lieutenant Roland |
 Andrzej HerderSecond Lieutenant Morawski | Second Lieutenant Morawski |
 Bronisław PawlikMate Rokosz | Mate Rokosz |
 Zbigniew FilusSenior Bosman Wacław Pierzchała | Senior Bosman Wacław Pierzchała |
 Henryk BąkBosman Leon Wiktorczyk | Bosman Leon Wiktorczyk |
 Ignacy MachowskiBosman Mirta | Bosman Mirta |
 Michał GazdaMate Okoń | Mate Okoń |
 Józef ŁodyńskiMate Baczek | Mate Baczek |
 Tadeusz GwiazdowskiBosman Bryt | Bosman Bryt |
 Jerzy NowakMate Sznuk | Mate Sznuk |
 Czesław PiaskowskiBosman Serafin | Bosman Serafin |
| MMarian NowickiPolish Attache in Tallin | Polish Attache in Tallin |
 Kazimierz WilamowskiEstonian Admiral | Estonian Admiral |
 Stanisław MilskiHöze, Deputy Commandant at Tallin Harbour | Höze, Deputy Commandant at Tallin Harbour |
 Lech WojciechowskiHöze's Secretary | Höze's Secretary |
 Ryszard FilipskiEstonian Soldier | Estonian Soldier |
 Jerzy KozakiewiczEstonian Soldier | Estonian Soldier |
 Stanisław BarejaCook (uncredited) | Cook (uncredited) |
 Henryk BistaSeaman (uncredited) | Seaman (uncredited) |
 Henryk BoukołowskiSeaman (uncredited) | Seaman (uncredited) |
 Józef DuriaszSeaman (uncredited) | Seaman (uncredited) |
| ZZygmunt HübnerGerman Captain (uncredited) | German Captain (uncredited) |
| WWlodzimierz KaczmarskiSeaman (uncredited) | Seaman (uncredited) |
 Jerzy KamasSeaman (uncredited) | Seaman (uncredited) |
 Eugeniusz KamińskiOfficer (uncredited) | Officer (uncredited) |
 Janusz KłosińskiDoctor (uncredited) | Doctor (uncredited) |
 Gustaw LutkiewiczBritish Attache (uncredited) | British Attache (uncredited) |
