A look at the lives of people who work on the barges and boats flowing across the Vistula River.
| Actor | Role |
|---|---|
 Stanisława WysockaApolonia 'Matyjaska' Matyjas-Zabawska | Apolonia 'Matyjaska' Matyjas-Zabawska |
 Ina BenitaAnna | Anna |
 Jerzy PichelskiAleksy Rorat | Aleksy Rorat |
| HHalina ZawadzkaKarola | Karola |
| RRenati ReneeJulcia | Julcia |
 Aleksander ZelwerowiczIdzi Zabawski | Idzi Zabawski |
| KKazimierz GellaSkipper Firlus | Skipper Firlus |
| KKazimierz JenovalZygmunt Siudowski | Zygmunt Siudowski |
 Kazimierz OpalińskiSkipper Dobrziałkowski | Skipper Dobrziałkowski |
| MMarian TrojanBosun Hajnuś | Bosun Hajnuś |
| LLucjana BrackaErna Kufke (uncredited) | Erna Kufke (uncredited) |
 Kurt Katch(uncredited) | (uncredited) |
| HHelena Zarembina(uncredited) | (uncredited) |