When Italy declared war against Austria-Hungary on 23 May 1915, the Austrian fleet was quick to react; the navy launched several attacks on the Marche region of Italy. That day, the destroyerSMS Dinara and torpedo boatTb 53T bombarded the port of Ancona. The destroyer SMS Lika, on a reconnaissance mission between Palagruža and Cape Gargano, shelled the semaphore and radio station at Vieste. Defending those waters at the time was the Italian destroyer Turbine. A small duel commenced with Lika coming out as the victor, damaging the enemy destroyer.
Raid
The next day, 24 May, the majority of the Austrian fleet at Pola steamed for the Adriatic coast of Italy. This included the dreadnoughtsSMS Viribus Unitis, Tegetthoff, Prinz Eugen and eight pre-dreadnoughts. Other Austro-Hungarian ships were already in enemy waters or proceeding to the Ancona coast themselves. The fleet bombarded several of the Italian coastal cities and other targets in and around the Province of Ancona, especially damaging the city of Ancona.
Heavy damage was inflicted by the Austrian navy, and 63 people, both Italian military and civilian personnel, died in Ancona alone.[1] The dome of Ancona Cathedral was damaged, too. Austrian casualties were light. The war in the Adriatic Sea continued, culminating in a large Allied blockade to prevent the Austro-Hungarian fleet from leaving the Adriatic. The "Otranto Barrage" would be raided by the Austro-Hungarians several times throughout the war, but major Austro-Hungarian warships rarely left the bases after this raid.
Notes
^Grga Novak, Jadransko more u sukobima i borbama kroz stoljeća, book 2, Split, 2004 (in Croatian)
Tarrant, V. E. (1989). The U-Boat Offensive: 1914–1945. Annapolis, Maryland: Naval Institute Press. ISBN978-0-87021-764-7. OCLC20338385.
Baumgartner, Lothar; Erwin Sieche (1999). Die Schiffe der k.(u.)k. Kriegsmarine im Bild=Austro-Hungarian warships in photographs (in German). Wien: Verlagsbuchhandlung Stöhr. ISBN978-3-901208-25-6. OCLC43596931.