Battle of the Strait of Otranto

The 1917 Battle of the Strait of Otranto was the result of an Austro-Hungarian raid on the Otranto Barrage, an Allied naval blockade of the Strait of Otranto. The battle took place on 14–15 May 1917, and was the largest surface action in the Adriatic Sea during World War I. The Otranto Barrage was a fixed barrier, composed of lightly armed drifters with anti-submarine nets coupled with minefields and supported by Allied naval patrols.

The Austro-Hungarian navy planned to raid the Otranto Barrage with a force of three light cruisers and two destroyers under the command of Commander Miklós Horthy, in an attempt to break the barrier to allow U-boats freer access to the Mediterranean, and Allied shipping. An Allied force composed of ships from three navies responded to the raid and in the ensuing battle, heavily damaged the Austro-Hungarian cruiser SMS Novara. However, the rapid approach of the Austro-Hungarian relief force persuaded Rear Admiral Acton, the Allied commander, to retreat.

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