SMS Prinzregent Luitpold[a] was the fifth and final vessel of the Kaiser class of battleships of the Imperial German Navy. Prinzregent Luitpold's keel was laid in October 1910 at the Germaniawerft dockyard in Kiel. She was launched on 17 February 1912 and was commissioned into the navy on 19 August 1913. The ship was equipped with ten 30.5-centimeter (12.0 in) guns in five twin turrets, and had a top speed of 21.7 knots (40.2 km/h; 25.0 mph).
Prinzregent Luitpold was assigned to the III Battle Squadron of the High Seas Fleet for the majority of her career; in December 1916, she was transferred to the IV Battle Squadron. Along with her four sister ships, Kaiser, Friedrich der Grosse, Kaiserin, and König Albert, Prinzregent Luitpold participated in all of the major fleet operations of World War I, including the Battle of Jutland on 31 May – 1 June 1916. The ship was also involved in Operation Albion, an amphibious assault on the Russian-held islands in the Gulf of Riga, in late 1917. (WIKI)