SMS Sankt Georg was the third and final armored cruiser of the Austro-Hungarian Navy. She was built at the Pola Arsenal; her keel was laid in March 1901, she was launched in December 1903, and completed in July 1905. Her design was based on the previous armored cruiser Kaiser Karl VI, with the primary improvement being a stronger armament. Sankt Georg, named for Saint George, was armed with a main battery of two 24-centimeter (9.4 in) guns, five 19 cm (7.5 in) guns, and four 15 cm (5.9 in) guns.
Sankt Georg served in the training and reserve squadrons during her peacetime career, usually alternating with Kaiser Karl VI. In April–May 1907, Sankt Georg participated in the Jamestown Exposition in the United States, to commemorate the first English colony in North America. During World War I, the Austro-Hungarian fleet largely remained inactive as a fleet in being, though she did bombard the Italian coast in May 1915 following the latter's declaration of war on Austria-Hungary. In 1917, she supported the Austro-Hungarian forces that raided the Otranto Barrage; in the ensuing Battle of the Strait of Otranto, Sankt Georg's arrival on the scene was sufficient to force the combined British, French and Italian forces to break off the engagement and retreat.
By February 1918, the crews of Sankt Georg and several other warships grew weary of the war and the long periods of inactivity, which led to the Cattaro Mutiny. The mutiny was quickly suppressed, but Sankt Georg and several other ships were subsequently decommissioned. Under the terms of the Treaty of Saint-Germain-en-Laye, Sankt Georg was awarded as a war prize to Britain. In 1920, she was sold to Italian ship breakers and scrapped thereafter.
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