Ussr Cruiser
In 1937, it was decided to build heavy cruisers with 254 mm main battery guns instead of Type B battleships. The caliber was later increased to 305 mm in response to the construction of Scharnhorst-class battleships in Germany. The final design was presented to the Defense Committee in 1939, and two heavy cruisers of this class were laid down in the same year. The construction of ships was halted when World War II encroached on the Soviet Union's territory.