Prinz Eitel Friedrich 1917
The Mackensen class was the last class of battlecruisers to be built by Germany in World War I. The design initially called for seven ships, but three of them were redesigned as the Ersatz Yorck class. Of the four ships of the Mackensen class, Mackensen, Graf Spee, and Prinz Eitel Friedrich were launched, and Fürst Bismarck was not—but none were completed, after wartime shipbuilding priorities were redirected towards U-boat production. The ships were broken up in the early 1920s.
Prinz Eitel Friedrich was laid down on 1 May 1915 at Blohm & Voss under construction number 241. She was 21 months away from completion when she was launched to clear the slip on 13 March 1920 and was broken up at Hamburg in 1921.
Mackensen Class Battlecruiser 
Unfinished battlecruiser Prinz Eitel Friedrich (left) and Bayern-class battleship Württemberg in Hamburg after the war, in about 1920 
Prinz Eitel Friedrich (inboard of the incomplete Bayern Class Württemberg ) 
Prinz Eitel Friederich Being Launched 1920
