Two videos covering the 1930s battleship designs created by Gibbs & Cox for the Soviet Union, the last of which (Design 'D') would have given the Russians something capable of going toe-to-toe with an Iowa Class battleship...
Thank's for finding that one I was not aware of it's existence and there are some significant differences between Design 'D' and the Pr. 23 battleships.
For one thing Gibbs & Cox went for a 'sting-in-the-tail' by making C turret a quadruple mount for another, the Sovetsky Soyuz owed more to the Italian Littorio Class than Design 'D'.