- Georgi Zhzhyonov
- Chigrinov
- Nina Menshikova
- Nadezhda Vasilyevna
- Yuri Kamornyj
- Shcherban, Captain of 'Kaira'
- Aleksandr Kavalerov
- Diabolov
- Vadim Zakharchenko
- Head of school
- Tatyana Parkina
- Tamara
- Nikolay Gorlov
- Kaira's boatswain
- Boris Gitin
- Senior mate
- Lidiya Korolyova
- Katya
- Liliya Zakharova
- Doctor
- Pavel Maksimenkov
- Slava Chigrinov
