Channell wrote:
... like how the Rodney was literally shaking itself apart everytime she shot her big guns ...
weak British construction.
Channell wrote:
... getting the Prinz Eugen across the Atlantic after the war was a major project because of mechanical problems ...
That was a case of the US Sailors not reading German or being trained on the German high pressure machinery. the equipment was good just improperly maintained.
The 2 possibilities I see is 1) she's in port (perhaps Konigsberg or Danzig) as the Russians overrun the port. Stalin holds onto the ship (even though the Russians weren't able to take care of the GZ) After he's gone, she's then turned back over to East Germany - perhaps with Russian mods, or after Peal Harbor, Hitler doesn't stupidly declare war on the US. the war splits between US/Japan & Europe. Germany would still have fallen but overrun fully by Russia (maybe even France) the KM flees before the Cossack hoards to Norway and then to US as Germany falls to Russia. Japan falls to US & cold war starts. The US upgrades Bismarck as flagship of the "Free German Navy in Exile".
btw if Bismarck had survived to '44-45 she would'of had the same AA upgrades as Tirpitz so that would be the base model to use.