There several H class battleship designs. There was the H-39, broadly an enlsrged Bismarck. Two were started, and didn't get far before construction was halted. The H-41 was a paper project with improved armor. The H-42, H=43, and H=44 designs were sort of Kriegsmarine 1946 plans that got farther and farther from reality. From what I can see online ALL the designs used four two gun turrets. I may be wrong.