I have been kicking around thoughts of this AU for some time. Giving the German Navy a genuine dual purpose 5" gun to rival the US and UK timelines.
It is difficult as one of the best AA weapons was the triaxially mounted twin 4.1". That mounting on the battleships down to the big cruisers served its purpose well. But, the German Navy considered it too light to be considered as an anti-torpedoboat gun. So mounted the 5.9" guns for that purpose. That mixed armament meant that the German Capital Ships were carrying several thousand tons of extra armament not really required. The answer to that conundrum of course is to fit a dual-purpose gun system. I envisage three/four dual purpose mountings, a single shielded or turreted mounting for use on cruisers as secondary armament, and on destroyers as main armament, a twin light turret for mounting on destroyers and AA cruisers as main armament and big cruisers as secondary armament, last but not least an armoured twin turret for mounting on the larger capital ships.
While most of the Kaisers fleet did not make it to WW2, having sunk themselves in Scapa Flow, I will do a few of them in various WW2 outfits. Gives me the chance to do a few more drawings than just Scharnhorst or Bismarck.
This first drawing is one I did as part of the Deutschland Revolution. This is a slightly larger Bismarck type with 8x16" to match an enlarged French reply which also had 16". I did two versions, one with 5.9/4.1, and the one below with the 127/50 armoured turrets.
The second drawing is the Spahkreuzer re-armed as an Anti-aircraft cruiser.
More drawings of everything from Z class DD's through to H class monsters will follow.
Some of the main contributors to the German Real Life and Never Were sections are maomatic, DG_Alpha and Garlicdesign. I would be more than happy to see drawings from them being entered to this thread. Give you all another line of vessels to draw.