Antek is an inexperienced seaman favored by his teachers. On his first trip to the sea he learns the hardships of the work and almost causes a tragedy.
| Actor | Role |
|---|---|
 Zbigniew SkowrońskiCommander Michalski | Commander Michalski |
 Ryszard PiekarskiAntoni Bugaj | Antoni Bugaj |
 Bohdan EjmontBronek Kruk | Bronek Kruk |
 Tadeusz ŁomnickiJózef Wietecha | Józef Wietecha |
 Leon ŁuszczewskiCapt. Kapera | Capt. Kapera |
 Władysław WalterJan | Jan |
| JJózef KarbowskiSchool Director | School Director |
| SStanislaw BrylinskiJozef's Father | Jozef's Father |
 Zenon BurzyńskiPaweł Konarek | Paweł Konarek |
 Michał GazdaStudent | Student |
| MMieczysław GórkiewiczNot listed | Not listed |
 Tadeusz JanczarBrzozowski | Brzozowski |
 Maria KierzkowaNot listed | Not listed |
 Stanisław KwaskowskiLecturer | Lecturer |
 Lech MadalińskiNot listed | Not listed |
| WW. MarchewkaBronek's Father | Bronek's Father |
| JJ. PrzybylskiNot listed | Not listed |
| RRyszard PikulskiZbigniew | Zbigniew |
 Wojciech SiemionTadeusz | Tadeusz |
 Włodzimierz SkoczylasZiemba | Ziemba |
| JJerzy SliwaNot listed | Not listed |
| LLeszek SadzikowskiNot listed | Not listed |
| JJadwiga WieczorkównaBronek's Sister (uncredited) | Bronek's Sister (uncredited) |
| MMarianna WoźnaBronek's Sister (uncredited) | Bronek's Sister (uncredited) |