A monument to submariners and the creators of the Soviet submarine fleet, the Narodovolets was one of the first Soviet submarines built at the Baltic Works in Leningrad in 1927-31. In the 1930s it served as a unit of the Northern fleet. It also saw action in the Baltic during the Second World War and was on the roll of the Soviet Baltic fleet until 1975. From 1957 to 1987 the submarine was used as a training station. In 1989, on the initiative of veteran submariners, the Narodovolets was placed on the shore of the Gulf of Finland and in 1994, having been repaired and restored, it was converted into a museum.