U11 20 Jun 1915

Initially German UB15. Arrived at Pola by rail 22 May; into German service 04 Jun 1915. Sank Italian submarine Medusa 10 June 1915, followed shortly by Italian torpedo boat Serpente. Transferred to Austria-Hungary 20 Jun 1915. Attacked by French seaplane 01 Jul 1915.

Stopped Italian hospital ship (ex German) König Albert off San Giovanni di Medua and ordered her into Cattaro for inspection 18 Jan 1916. 27 Feb 1916 Dampfer XX began tow of U11 from Cattaro to Pola, arriving 04 Mar In collision with SS Senj in the Bocche 25 Nov 1916.

To Italy; b/u at Pola 1920.