Couldn't find any models of this with movable turrets so here. I modified a twin 203mm gun into this over a downloaded Roon with no movable parts whatsoever. Use as you wish.
Since I remember where these are from, I can add credits today.
Where the twin 203 came from: https://sketchfab.com/3d-models/prinz-eugen-6c344002b9944856941902a259a0641e
Roon with no movable parts: https://p3dm.ru/files/boat/9940-roon-1945.html