Triglav (I) 08 Aug 1914

1914 On Sebenico station from 16 Sep. 02 Nov reconnaissance off Lissa. 09 Nov - 12 Dec in dock for modifications, then return to Sebenico station.

1915 10 Apr to Cattaro; attack in Strait of Otranto. 11 May from Pola to Sebenico with U12. 23/24 May security duties off Ancona. 23 Jul in action on Italian coast. 27/28 Jul on shelling and landing support duties at Pelagosa. 17 Aug left Pola with U25. 19 Aug at Cattaro. 22 Nov attack in Strait of Otranto; sank Italian sailing ship Kalmara. 29 Dec damaged by Italian mine during attack on Durazzo; taken in tow by Csepel then Tatra and Balaton; sunk herself as enemy ships closed in.