In a photo of 1921 she looks very much like a Jutland Era Battlecruiser. Not so unexpected as Kongo was built in Brittan and the following ships of that class copied in Japan, influencing the design of the subsequent Fuso. A 1925 photo shows a start to the multiplication of "pagoda" levels, with it seemingly almost fully evolved by 1933 when she completed most of her modernization. The main turrets differed from the Vickers model only in minor details.
Cheers: T
What's the book, have a really good collection, but that's not on the list at present. The Cruisers were definitly at the pointy end of the spear, a lot!
Cheers: T