Yuri Belyayev as Nikolai Nikonov

Svetlana Bragarnik as Kira Nikonova

Lyubov Kalyuzhnaya as Maria Petrovna

Vadim Makarovskiy as Aleksandr Kluyev

Nozheri Chonishvili as professor Ivan Revazovich Gedevanov

Vladimir Varentsov as captain Petrakov

Konstantin Sarynin as lieutenant Antipov

Loghman Kärimov as private Gadzhibekov

Yevgeniy Liskonog as Zhdanov

Konstantin Lukashov as boat captain Ganichev

German Orlov as tug captain Zagovorenniy

Vladimir Trukhanov as tug captain Egor Mikhaylovich

Svetlana Gaytan as Galya Kluyeva

Tatyana Zakharova as woman on the tram

Nina Mazayeva as Roza Ivanovna

Olga Samoshina as

Viktor Sukhorukov as

Yuliya Yakovleva as friend of Kluyev

Sergei Gordiyenko as

Victor Adeev as

Pavel Kornakov as uncredited

Viktor Nesterov as tug sailor

Aleksandr Aristov as Kopylov