The German navies of the 1920s through 1945—the Reichsmarine and later Kriegsmarine—built or planned a series of heavy cruisers starting in the late 1920s, initially classified as Panzerschiffe (armored ships). Four different designs—the Deutschland, D, P, and Admiral Hipper classes, comprising twenty-two ships in total—were prepared in the period, though only the three Deutschland-class ships and three of the five Admiral Hipper-class cruisers were ever built.