I think it would be mean were I to tell you to keep looking, since you already got that close twice in a row. So here goes:
Bayern Class (1916)
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"The Bayern class were the last German battleships of the Hochseeflotte, only two of the four ships were completed during World War I. Construction started after a huge discussion about the main artillery for those ships ranging from 35,6 to 40 cm. The final design included eight 38 cm guns, the same size choosen for the newest British battleships (Queen Elizabeth class) although this was unknown at that time.
The general construction was based on the previous battleship class, the König class, and again it was planed to add a diesel engine to the ship to enhance their endurance. Since the problems of building powerful diesel engines were known from the previous battleships, only the last two ships of the Bayern class were planed to include the diesel engine, enabling them to operate ot only n the North Sea, but also in the North Atlantic.
Those ships are often seen as "unofficial" predecessors of the Bismarck class battleships of the Kriegsmarine and are best compared to the British Revenge class.
Bayern and Baden were commissioned during wartime, but both ships came too late for the battle of Jutland and did not see many actions during the war. Both were scuttled at Scapa Flow, and Baden was one of the few ships which could be saved before sinking and was sunk as a target ship in 1921. Construction of the Sachsen was stopped about 9 months before completion and was broken down in 1921. Würtemberg was 12 months away from completion when construction was stopped. The ship was also broken down in 1921."
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Bayern Class Proposed Refit (1936)
This unit is based on the idea of what would have been, had the German post-war Government bought back the Baden from Britain for scrap value -yet in reality only in order to secretly, little-by-little modernize the vessel until the mid-1930s. Similarly, Germany's interwar governments could have fooled the victorious Allies instead of having broken down the sister ships Sachsen and Würtemberg as accorded. After all, the successive governments really did repeatedly undermine the Versailles treaty by conducting research in the fields of avionics, tank development (with the aid of Soviet Russia), by slowing reparation payments, and declaring large parts of army personel as "Free Corps" Militia (so as to maintain the total size of the army within the dictated upper limit of 100.000).
Or perhaps the initial intentions were even genuine while there was just no funding for the scrapping due to the harshness of the economic depression and dire monetary situation the state was in- one way or the other the hulls remained. In any way- who would notice a few old ship hulls tucked away in a mid-sized Prussian wharf...
What matters is that this way, by the outbreak of WWII, the by then German dictatorship would hence have had 3 small but powerfull battleship refits at its disposal, harbored and modernized in secret, and enough to challenge the British post-war refits of the Queen Elizabeth class with its artillery of 381mm.
Edit: So that means Kingfisher will get this one once its done exclusively before everyone else