As the German fleet shifted priorities to the U-boat campaign after Jutland, the surface fleet declined in significance, though major fleet elements were sent to the Baltic Sea in September 1917 to wage Operation Albion to secure several islands in the Gulf of Riga from Russian forces. "König" and "Kronprinz" took part in the Battle of Moon Sound there, where they damaged the Russian pre-dreadnought and forced her scuttling. The four "König"-class ships saw little activity thereafter and plans for a final attack on the Royal Navy in October 1918 led to the Wilhelmshaven mutiny. All four ships were interned at Scapa Flow after the war, where they were scuttled on 21 June 1919. "Grosser Kurfürst" was raised in 1938 and broken up, but the other three vessels remain on the sea floor, where they remain popular diving sites.