The Secret of Two Oceans

Vorontsov

Skvoreshnya

Kartsev, senior lieutenant of state security

Ivashev

Gorelov, inzhener-mekhanik

Druzhinin, assistant commander

Arsen Davidovich Lordkipanidze, professor, ichthyologist

Andrey Nikolaevich, professor, oceanologist

Olga Ivanovna Bystrykh, doctor of the Pioneer submarine

Ivan Nikolayevich Bystrykh, father of Olga Bystrykh

Vasily Ivanovich Bazov, Colonel of State Security

Sidorina, administrator of the Intourist hotel in Riga