SMS Viribus Unitis was an Austro-Hungarian dreadnought battleship, the first of the . "Viribus Unitis", meaning "With United Forces", was the personal motto of Emperor Franz Joseph I. Viribus Unitis was ordered by the Austro-Hungarian Navy in 1908 and was laid down in Stabilimento Tecnico Triestino shipyard in Trieste on 24 July 1910. Viribus Unitis was launched from the shipyard on 24 June 1911 and was formally commissioned into the Austro-Hungarian Navy on 5 December 1912. She spent her early career performing training missions and making trips to foreign ports. In June 1914, she carried Archduke Franz Ferdinand on a trip to Bosnia with his wife Sophie. During his visit to Sarajevo, he was assassinated by Gavrilo Princip in the event that caused the beginning of World War I. During World War I, Viribus Unitis took part in the flight of the German battlecruiser and light cruiser . In May 1915, she also took part in the bombardment of the Italian port city of Ancona. Viribus Unitis was sunk while at anchor by limpet mines emplaced by Italian sailors on 1 November 1918. Construction and design Construction Viribus Unitis was ordered in 1908 as the first of a class of four, the first dreadnoughts to be built for the Austro-Hungarian Navy. Initially intended to be named Tegetthoff, she was renamed on the personal order of Emperor Franz Josef; following this, the second ship of the class was named Tegetthoff. The ship was laid down in the Stabilimento Tecnico Triestino shipyard in Trieste on 24 July 1910. Following eleven months of construction, Viribus Unitis was launched on 24 June 1911. Following her fitting out, she was commissioned into the Austro-Hungarian Navy on 5 December 1912. Characteristics Viribus Unitis had an overall length of , a beam of , and a draught of at deep load. She displaced at load and at deep load. Viribus Unitis had four Parsons steam turbines, each of which was housed in a separate engine-room. The turbines were powered by twelve Babcock & Wilcox boilers. The turbines were designed to produce a total of , which was theoretically enough to attain her designed speed of , but no figures from her speed trials are known to exist. She carried of coal, and an additional of fuel oil that was to be sprayed on the coal to increase its burn rate. At full capacity, she could steam for