. "successful raid on the blockade in May 1917" . "raid conducted one year earlier" . "attack the Otranto Barrage" . . "effort" . "1 seaplane carrier" . . "3 light cruisers" . . . "Battle of the Strait of Otranto (1917)" . . . "2 light cruisers damaged" . "1917-05-15" . . "1 armored cruiser" . "3 submarines" . . . "10 destroyers" . "an attack" . . "the battle of the Otranto Barrage" . "at the Otranto Barrage" . . "Battle of the Otranto Straits" . . "47 drifters" . . "Battle of Otranto Straits" . . "Battle of the Strait of Otranto (1917)" . . "raided the barrage" . "Austria" . "United Kingdom" . . "Austro-Hungarian victory" . "Battle of the Strait of Otranto" . . "2 light cruisers" . . . . . . "Battle of the Otranto Straits (1917)" . "raid conducted one-year earlier" . . . . . "4 destroyers" . .