T1 was a seagoing torpedo boat that was operated by the Royal Yugoslav Navy between 1921 and 1941. Originally 76 T, a 250t-class torpedo boat of the Austro-Hungarian Navy built in 1914, she was armed with two 66 mm (2.6 in) guns and four 450 mm (17.7 in) torpedo tubes, and could carry 10–12 naval mines. She saw active service during World War I, performing convoy, escort and minesweeping tasks, anti-submarine operations and shore bombardment missions. She was part of the escort force for the Austro-Hungarian dreadnought SMS Szent István during the action that resulted in the sinking of that ship by Italian torpedo boats in June 1918. Following Austria-Hungary's defeat later that year, 76 T was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which became the Royal Yugosl