Tb 74T 26 Jun 1914

16 Aug 1914 to Cattaro. 17 Oct 1914 on reconnaissance off Italian coast.

23 Feb 1915 to Pola. 17 Jun 1915 in action against Rimini. 18 Jun 1915 off Giulianova stopped Italian steamer Maria Grazia, took her crew on board and then torpedoed her. 23 Jul 1915 shelling Italian coast. 28 Jul 1915 in action at Pelagosa. 17 Aug 1915 in action at Pelagosa. 09 Dec 1915 at Cattaro. 18 Dec 1915 in action with Novara in Otranto Straits.

06 Feb 1916 on reconnaissance with Helgoland. 01 Sep 1916 at Pola. 24 Sep 1916 minelaying off Po delta.

28 Aug 1917 to Cattaro.

19 Mar 1918 rescuing soldiers and sailors from SS Linz off Cape Rodoni with Tb 74 and Tb 98. 09 Jul 1918 unsuccessfully tried to take damaged U10 in tow off Caorle; rescued crew.

To Romania as Viforul; discarded 1927 or 1932.