1926-1936
The ship repair workshops development
1934 – Development of the Stakhanovite movement at the workshops. The labours participated in production control, socialist competition. The industrialization accelerated Schliesselburg development. The town became important part of Volgo-Baltic Water System through which the equipment was delivered for large industrial new buildings in the interior part of the country, supply was delivered in the second largest city of USSR and the goods were exported.
1936 - the ship repair workshops were awarded higher status of II rank ship repair yard in accordance with the order of river fleet People’s Commissar. On the eve of the Great Patriotic War the ship repair yard reached the level of I rank enterprise by production output and labours quantity.
The town was growing. Population size reached 15 000 people. Two secondary schools, hospitals and cafeterias were working in the town. Along with public stores market was opened the goods for which were delivered from nearby collective farms.