The Otranto Barrage was an Allied naval blockade of the Strait of Otranto between Brindisi in Italy and Corfu on the Greek side of the Adriatic Sea in the First World War. The operation consisted of over 200 vessels at the height of the blockade. The blockade was intended to prevent the Austro-Hungarian Navy from escaping into the Mediterranean and threatening Allied operations there. The blockade was effective in preventing surface ships from escaping the Adriatic, but it had little or no effect on the submarines based at Cattaro.

SMS Balaton was one of six Tátra-class destroyers built for the kaiserliche und königliche Kriegsmarine shortly before the First World War. Completed in 1913, she did not participate in the attacks on the Italian mainland after Italy declared war on Austria-Hungary in May 1915. Two months later the ship bombarded a small island in the Central Adriatic Sea during an unsuccessful attempt to recapture it from the Italians. In November and early December Balaton was one of the ships conducting raids off the Albanian coast to interdict the supply lines between Italy and Albania. She played a minor role in the 1st Battle of Durazzo in late December. Balaton participated in several unsuccessful raids on the Otranto Barrage in 1917, although she sank an ammunition ship during the Battle of the Strait of Otranto. She was transferred to Italy in 1920 in accordance with the peace treaties ending the war and renamed Zenson. The Regia Marina used her for spare parts; she was discarded in 1923 and subsequently scrapped.