How far could Soviet battleships exceed treaty limits?

How badly would the Soviet Union cheat the treaty displacement limit on its first battleships?

Probably only by a Nelson-like margin at first, because Soviet shipyard size and capacity would not support much larger hulls without major new infrastructure.

The first Soviet treaty ships could not simply grow far beyond 35,000 tons because the yards able to handle them were themselves a limiting resource. One yard in the Baltic and one in the Black Sea had sufficient space for the hulls, although their technical readiness remained uncertain. Another yard in each region might accommodate them after limited work. A first quartet laid down around 1930 would probably not commission until 1935 or 1936. Even by 1939-41, this estimate allows no more than roughly eight completed battleships. Rival navies would nevertheless have to build against the authorized ceiling rather than wait to see how slowly Soviet construction actually progressed.