- Elena Drobysheva
- Masha Tsukanova
- Kim Chkhol
- Ri Chokhol
- Yuriy Kuznetsov
- captain Kondakov - intelligence officer
- Aleksey Buldakov
- sergeant Aleksey Tishchenko - intelligence officer
- So Gyon Sob
- Koi
- Kim Yon-gin
- Sakamoto
- Kim Yun-Hon
- Arai
- Tõnu Mikiver
- English doctor - prisoner of war
- Hwang Min
- (as Khvan Min)
- Lee Gwang-ho
- (as Li Gvang Kho)
- Yoo Won-chun
- (as Yu Von Chun)
- Kim Sang-hoon
- (as Kim San Khun)
- Lee Jong-gon
- (as Li Chon Gon)
- Yoon Man-song
- (as Yun Man Son)
- Kim Gwan Nam
- (as Kim Gwan-nam)
- Song Won Joo
- (as Son Von-chu)
- Choe Se-rin
- (as Chve Se Rin)
- Park Chi-hwan
- (as Pak Chi Khvan)
- Kim Hwan-chun
- (as Kim Kvan Chun)
- Pak Song
- (as Pak Son)
- Kyu Jung-hwan
- (as Kyu Chon Khvan)
- Aleksandr Agafonov
- (as A. Agafonov)
- A. Alekseyev
- (as A. Alekseev)
- Aleksandr Kolobov
- Submarine captain
- Evgeniy Kuleshov
- (as E. Kuleshov)
- Anatoli Bugreyev
- (as A. Bugreev) (as Anatoliy Bugreev)
- Andrei Lipilin
- (as A. Lipilin)
- Yuriy Martynov
- Kapitan 1-go ranga
