Drava was a river monitor operated by the Royal Yugoslav Navy between 1921 and 1941. Originally built for the Austro-Hungarian Navy as SMS Enns, the monitor fought against the Serbian and Romanian armies during World War I. The ship was transferred to the newly created Kingdom of Serbs, Croats and Slovenes (later Yugoslavia) and renamed Drava in 1920. The vessel remained in service throughout the interwar period. During the invasion of Yugoslavia in April 1941, Drava spent six days shelling airfields near Mohács in Hungary and fought off a small flotilla of Hungarian gunboats. On 12 April, the monitor was attacked by Junkers Ju 87 Stuka dive bombers. One bomb was dropped straight down Drava's funnel and exploded in the engine room, killing 54 of the crew and sinking the vessel; there were only 13 survivors. The base of the Serbian River Flotilla at Novi Sad is named after Drava's last captain, Aleksandar Berić. (This article is part of a featured topic: Ships of the Royal Yugoslav Navy.)