The "Tegetthoff" class (also called the "Viribus Unitis" class) was a class of four dreadnought battleships built for the Austro-Hungarian Navy. Named for Austrian Admiral Wilhelm von Tegetthoff, the class was composed of , , , and . Construction started on the ships shortly before World War I; "Viribus Unitis" and "Tegetthoff" were both laid down in 1910, "Prinz Eugen" and "Szent István" followed in 1912. Three of the four warships were built in the Stabilimento Tecnico Triestino shipyard in Trieste; "Szent István" was built in the Ganz-Danubius shipyard in Fiume, so that both parts of the Dual Monarchy would participate in the construction of the ships. The "Tegetthoff"-class ships hold the distinction for being the first and only dreadnought battleships of the Austro-Hungarian Navy.