A film about the activities of DOSAAF (All-Union Voluntary Society for Assistance to the Army, Aviation and Navy) in preparing pre-conscripts for service in the ranks of the Navy. Cadets of the DOSAAF naval schools in the city of Zhdanov, Astrakhan, Sevastopol during theoretical and practical classes, in a military campaign. School graduates - sailors of the Black Sea Fleet in the ranks, on watch, perform combat missions. Military training. Warships sailing into the storm.