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Владимир Заманский as Иванков, военный инженер 2-го ранга, командир особой группы |
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Виктор Михайлов as Макарин, лейтенант, аспирант, специалист-физик |
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Валентин Голубенко as Степан Твердохлиб, лейтенант, водолаз |
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Georges Nowicki as Ухов, лейтенант, командир сторожевого катера |
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Сергей Лосев as Рашевский, старший лейтенант, минёр |
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Сергей Полежаев as командующий |
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Naum Kavunovsky as шкипер |
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Ludmila Yaroshenko as Лена, краснофлотец, связной особой группы |
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Yuri Bogdanov as Лукьяненко, краснофлотец |
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Фёдор Валиков as Чалый, мичман, инструктор-водолаз |
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Василий Векшин as заместитель командующего |
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Виктор Павловский as командир ОВРа |
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Анатолий Быстров as часовой |
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Евгений Казаков as начальник разведки |
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В. Запуніді as морской офицер |
| Directing | Vladimir Strelkov | Director |
| Writing | Александр Молдавский | Writer |
| Sound | Эдуард Хагагортян | Original Music Composer |
| Art | Галина Щербина | Production Design |
| Camera | Георгий Козельков | Director of Photography |
| Sound | M. Derkach | Sound Director |
| Camera | Игорь Красовский | Camera Operator |
| Directing | V. Kotyukov | Assistant Director |
| Directing | Владимир Левин | Assistant Director |
| Directing | Aleksandr Amelin | Assistant Director |
| Directing | I. Zvyagin | Assistant Director |
| Editing | L. Lopachuk | Editor |
| Costume & Make-Up | V. Tkach | Costume Design |
| Costume & Make-Up | Людмила Друмерецкая | Makeup Artist |
| Writing | Т. Хмиадашвили | Script Editor |
| Writing | G. Burimenko | Script Editor |
| Art | Sergey Isakov | Set Decoration |
| Camera | L. Pivovarov | Assistant Camera |
| Camera | Валерий Репин | Assistant Camera |
| Directing | P. Yasinskiy | First Assistant Director |
| Directing | Z. Nechaenko | First Assistant Director |
| Lighting | Борис Моргулян | Lighting Artist |
| Visual Effects | Сергей Лылов | Visual Effects Camera |
| Visual Effects | Олексій Бокатов | VFX Artist |
| Visual Effects | K. Kostyuchenko | VFX Artist |
| Sound | Էմին Խաչատրյան | Conductor |
| Crew | Mikhail Putintsev | Military Consultant |
| Crew | F. Starozhilov | Military Consultant |
| Production | Марлен Хуциев | Producer |
| Production | Ye. Primazon | Executive Producer |
