- Ivan Novoseltsev
- Nazarov - Senior lieutenant, chief of post
- Galina Yumasheva
- Galina Ivanovna Nazarova - his wife
- Nikolay Ivakin
- Matveyev - Sergeant major
- I. Rozhnyatovskiy
- Ivan Okhremenko - Red Navy soldier
- Aleksandr Lutsenko
- Alim Tagirov - Red Navy soldier
- Vasili Lyudvinsky
- Bochkarev - Red Navy soldier
- Vladimir Uralskiy
- Filipp Filippovich Burov - lighthouse keeper
- Mariya Yarotskaya
- Varvara Stepanovna Burova - his wife
- Ivan Yudin
- Fedor Burov - their son
- Pyotr Arzhanov
- Japanese officer
- A. Aergardt
- Captain - Japanese intelligence
- Daniil Vvedenskiy
- Skipper
- R. Pak
- Radio operator
- Nikolay Trofimov
- Kuzmichov
