A film about the maritime club "Junga" at the DOSAAF (All-Union Voluntary Society for Assistance to the Army, Aviation and Navy) in Leningrad. Future club members answer questions from the selection committee (synchronously). Theoretical and practical training for club members. Starting sailing and radio-controlled models. Preparing for the hike. Yoongi scrubbing the deck, scrubbing the ship. Boat trip. Seascape, waves hitting the shore. The boys are playing on the beach. Passenger ship "Adjara" in the port. The city of Leningrad. Types of streets, buildings, architectural monuments of the city. The sailors are in formation. Naval officers are talking on the street. Sea port. P.P.Schmidt Bridge. Hydrofoil boat movement. Warships on the march. Storm. A submarine floats and emerges.