After naval sergeant Pekka Kuusisto runs into his old crush, nurse Leila, she stays on his mind as he embarks on a submarine combat exercise.
| Actor | Role |
|---|---|
 Georg MalmsténPekka Kuusisto | Pekka Kuusisto |
| KKati AspelinLeila | Leila |
 Aku KäyhköDr. Väre | Dr. Väre |
 Jaakko KorhonenNot listed | Not listed |
| IIivari KainulainenVille Pirske | Ville Pirske |
| VVäinö SöderholmIiska | Iiska |
| RReino VolanenNot listed | Not listed |
 Unto SalminenSalminen | Salminen |
| AAino NiskaIita | Iita |
| SSven LundevallNot listed | Not listed |
| RRobert von EssenNot listed | Not listed |
| EEugen MalmsténNot listed | Not listed |
| AAlexander WittenbergNot listed | Not listed |
| TTotti MelanderNot listed | Not listed |
| SSven GrönholmNot listed | Not listed |
| BBoris WittenbergNot listed | Not listed |
| VViljo VesterinenNot listed | Not listed |
| JJohan Jäätiö(uncredited) | (uncredited) |
| UUrho Westman(uncredited) | (uncredited) |
 Eero Eloranta(uncredited) | (uncredited) |
| HHelge Pahlman(uncredited) | (uncredited) |
 Laila Rihte(uncredited) | (uncredited) |
| JJaana Ylhä(uncredited) | (uncredited) |
| RRauni Veivo(uncredited) | (uncredited) |
| LLullan Helo(uncredited) | (uncredited) |
| LLaura Tudeer(uncredited) | (uncredited) |
| MMargit Tirkkonen(uncredited) | (uncredited) |