At the outbreak of World War I, "76 T" was part of the 1st Torpedo Group of the 3rd Torpedo Craft Division of the Austro-Hungarian 1st Torpedo Craft Flotilla. During the war, "76 T" was used for convoy, escort and minesweeping tasks, anti-submarine operations, and shore bombardment missions. She also conducted patrols and supported seaplane raids against the Italian coast. On 24 May 1915, "76 T" and seven other 250t-class boats were involved in the shelling of various Italian shore-based targets known as the Bombardment of Ancona, with "76 T" involved in the operation against Ancona itself. In late November 1915, the Austro-Hungarian fleet deployed a force from its main fleet base at Pola to Cattaro in the southern Adriatic; this force included six of the eight T-group torpedo boats, so it is possible that one of these was "76 T". This force was tasked to maintain a permanent patrol of the Albanian coastline and interdict any troop transports crossing from Italy.