SMS Schlesien was one of the five Deutschland-class pre-dreadnought battleships built for the Kaiserliche Marine between 1904 and 1906. Named after the German province of Schlesien, she was built at the Schichau-Werke shipyard in Danzig, where she was launched on 28 May 1906. She was commissioned into the navy on 5 May 1908. The ships of her class were already outdated by the time they entered service, being inferior in size, armor, firepower and speed to the revolutionary new battleship HMS Dreadnought.