The first 18″ variant boasted a basic 4X2 gun layout, though with the two after turrets well separated. The pagoda mast was raised to keep up with the much higher effective range of the bigger main guns. Also the funnels were trunked to clear smoke from the pagoda. This variant is the most well known as Herr Breyer used this in his famous book, but our rendition is more closely based on available material which he lacked back then. Also this was by no means the downselected design for production, this was simply one from the line.
Based on Hiraga archive and newest book sources from Japan
Drawing of the 46cm twin turret
And the gun itself:
