River monitors are military craft designed to patrol rivers.
The Beograd class of destroyers consisted of three ships built for the Yugoslav Royal Navy in the late 1930s, a variant of the French Bourrasque class. Beograd was constructed in France and Zagreb and Ljubljana were built in the Kingdom of Yugoslavia. In January 1940, Ljubljana struck a reef off the port of Šibenik, and was still under repair when the German-led Axis invasion of Yugoslavia commenced in April 1941. During the invasion, Zagreb was scuttled to prevent its capture, and the other two ships were captured by the Italians. The Royal Italian Navy operated Beograd and Ljubljana as convoy escorts between Italy, the Aegean Sea, and North Africa, under the names Sebenico and Lubiana respectively. Lubiana was lost in the Gulf of Tunis in April 1943; Sebenico was seized by the Germans in September 1943 after the Italian surrender and was subsequently operated by the German Navy as TA43. There are conflicting reports about the fate of TA43, but it was lost in the final weeks of the war.
T3 was a sea-going torpedo boat that was operated by the Royal Yugoslav Navy between 1921 and 1941. Originally 78 T, a 250t-class torpedo boat of the Austro-Hungarian Navy built in 1914, she was armed with two 66 mm (2.6 in) guns, four 450 mm (17.7 in) torpedo tubes, and could carry 10–12 naval mines. She saw active service during World War I, performing convoy, escort and minesweeping tasks, anti-submarine operations and shore bombardment missions. Following Austria-Hungary's defeat in 1918, she was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which subsequently became the Royal Yugoslav Navy, and was renamed T3. At the time, she and the seven other 250t-class boats were the only modern sea-going vessels of the fledgling maritime force.
T1 was a seagoing torpedo boat that was operated by the Royal Yugoslav Navy between 1921 and 1941. Originally 76 T, a 250t-class torpedo boat of the Austro-Hungarian Navy built in 1914, she was armed with two 66 mm (2.6 in) guns and four 450 mm (17.7 in) torpedo tubes, and could carry 10–12 naval mines. She saw active service during World War I, performing convoy, escort and minesweeping tasks, anti-submarine operations and shore bombardment missions. She was part of the escort force for the Austro-Hungarian dreadnought SMS Szent István during the action that resulted in the sinking of that ship by Italian torpedo boats in June 1918. Following Austria-Hungary's defeat later that year, 76 T was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which became the Royal Yugoslav Navy, and was renamed T1. At the time, she and seven other 250t-class boats were the only modern sea-going vessels of the fledgling maritime force.
Beograd was the lead ship of her class of destroyers, built for the Royal Yugoslav Navy during the late 1930s, and designed to be deployed as part of a division led by the flotilla leader Dubrovnik. She entered service in April 1939, was armed with a main battery of four 120 mm (4.7 in) guns in single mounts, and had a top speed of 35 knots.
Zagreb was the second of three Beograd-class destroyers built for the Royal Yugoslav Navy (KM) in the late 1930s. She was designed to be deployed as part of a division led by the flotilla leader Dubrovnik and was the first warship built in the Kingdom of Yugoslavia. Zagreb entered service in August 1939, was armed with a main battery of four 120 mm (4.7 in) guns in single mounts, and had a top speed of 35 knots.
The Yugoslav monitor Drava was a river monitor operated by the Royal Yugoslav Navy between 1921 and 1941. She was originally built for the Austro-Hungarian Navy as the name ship of the Enns-class river monitors. As SMS Enns, she was part of the Danube Flotilla during World War I, and fought against the Serbian and Romanian armies from Belgrade to the lower Danube. In October 1915, she was covering an amphibious assault on Belgrade when she was holed below the waterline by a direct hit, and had to be towed to Budapest for repairs. After brief service with the Hungarian People's Republic at the end of the war, she was transferred to the newly created Kingdom of Serbs, Croats and Slovenes, and renamed Drava. She remained in service throughout the interwar period, but was not always in full commission due to budget restrictions.
The Yugoslav monitor Sava is a Temes-class river monitor that was built for the Austro-Hungarian Navy as SMS Bodrog. She fired the first shots of World War I just after 01:00 on 29 July 1914, when she and two other monitors shelled Serbian defences near Belgrade. She was part of the Danube Flotilla, and fought the Serbian and Romanian armies from Belgrade to the mouth of the Danube. In the closing stages of the war, she was the last monitor to withdraw towards Budapest, but was captured by the Serbs when she grounded on a sandbank downstream from Belgrade. After the war, she was transferred to the newly created Kingdom of Serbs, Croats and Slovenes, and renamed Sava. She remained in service throughout the interwar period, although budget restrictions meant she was not always in full commission.
Vardar was a Sava-class river monitor built for the Austro-Hungarian Navy as SMS Bosna, but was renamed SMS Temes (II) before she went into service. During World War I, she was the flagship of the Danube Flotilla, and fought the Serbian Army, the Romanian Navy and Army, and the French Army. She reverted to the name Bosna in May 1917, after the original SMS Temes was raised and returned to service. After brief service with the Hungarian People's Republic at the end of the war, she was transferred to the newly created Kingdom of Serbs, Croats and Slovenes, and renamed Vardar. She remained in service throughout the interwar period, although budget restrictions meant she was not always in full commission.
SMS Körös was the name ship of the Körös-class river monitors built for the Austro-Hungarian Navy. Completed in 1892, the ship was part of the Danube Flotilla, and fought various Allied forces from Belgrade down the Danube to the Black Sea during World War I. After brief service with the Hungarian People's Republic at the end of the war, she was transferred to the newly created Kingdom of Serbs, Croats, and Slovenes, and renamed Morava. She remained in service throughout the interwar period, although budget restrictions meant she was not always in full commission.
The Enns-class river monitors were built for the Austro-Hungarian Navy during the mid-1910s. The two ships of the class were assigned to the Danube Flotilla and participated in World War I. The ships survived the war and were transferred to Romania and the newly created Kingdom of Serbs, Croats and Slovenes as reparations.
The 250t class were high-seas torpedo boats built for the Austro-Hungarian Navy between 1913 and 1916. A total of 27 boats were built by three shipbuilding companies, with the letter after the boat number indicating the manufacturer. There were small variations between manufacturers, mainly in the steam turbines used, and whether they had one or two funnels. The eight boats of the T-group, designated 74 T – 81 T, were built by Stabilimento Tecnico Triestino, located at Trieste. The sixteen boats of the F-group, 82 F – 97 F, were built by Ganz-Danubius at their shipyards at Fiume and Porto Re. The three M-group boats, 98 M – 100 M, were manufactured by Cantiere Navale Triestino at Monfalcone.
The Albona class were mine warfare ships used by the Regia Marina and Royal Yugoslav Navy (KJRM). Fourteen ships were originally laid down between 1917 and 1918 for the Austro-Hungarian Navy as the MT.130 class. However, the end of World War I and the dissolution of Austria-Hungary left them incomplete until 1920, when three ships were finished for the Regia Marina. An additional five ships were completed for the KJRM in 1931 as the Malinska class.
T7 was a sea-going torpedo boat operated by the Royal Yugoslav Navy between 1921 and 1941, after spending World War I in Austro-Hungarian Navy service. Originally 96 F, she was a 250t-class torpedo boat, and saw active service during World War I, performing convoy, patrol, escort and minesweeping tasks, and anti-submarine operations. Following Austria-Hungary's defeat in 1918, 96 F was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which later became the Royal Yugoslav Navy, and was renamed T7. At the time, she and the seven other 250t-class boats were the only modern sea-going vessels of the fledgling maritime force.
The Yugoslav torpedo boat T5 was a sea-going torpedo boat operated by the Royal Yugoslav Navy between 1921 and 1941. Originally 87 F, a 250t-class torpedo boat of the Austro-Hungarian Navy built in 1914–1915, she was armed with two 66 mm (2.6 in) guns and four 450 mm (17.7 in) torpedo tubes, and could carry 10–12 naval mines. She saw active service during World War I, performing convoy, patrol, escort and minesweeping tasks, anti-submarine operations and shore bombardment missions. Following Austria-Hungary's defeat in 1918, 87 F was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which became the Royal Yugoslav Navy, and was renamed T5. At the time, she and the seven other 250t-class boats were the only modern sea-going vessels of the fledgling maritime force.
T6 was a sea-going torpedo boat that was operated by the Royal Yugoslav Navy between 1921 and 1941, after spending World War I in Austro-Hungarian Navy service. Originally 93 F, she was a 250t-class torpedo boat built in 1915–1916. She saw active service during World War I, performing convoy, escort, patrol and minesweeping tasks, and anti-submarine operations. Following Austria-Hungary's defeat in 1918, 93 F was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which later became the Royal Yugoslav Navy, and was renamed T6. At the time, she and the seven other 250t-class boats were the only modern sea-going vessels of the fledgling maritime force.
T8 was a sea-going torpedo boat that was operated by the Royal Yugoslav Navy between 1921 and 1941, after spending World War I in Austro-Hungarian Navy service. Originally 97 F, she was a 250t-class torpedo boat, which saw active service during World War I, performing convoy, patrol, escort and minesweeping tasks, and anti-submarine operations. Following Austria-Hungary's defeat in 1918, 97 F was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which later became the Royal Yugoslav Navy, and was renamed T8. At the time, she and the seven other 250t-class boats were the only modern sea-going vessels of the fledgling maritime force.
T4 was a seagoing torpedo boat operated by the Royal Yugoslav Navy between 1921 and 1932, after spending World War I in Austro-Hungarian Navy service. Originally 79 T, she was a 250t-class torpedo boat, and was laid down on 1 December 1913, launched on 30 April 1914 and completed on 30 September of that year. She saw active service during World War I, performing convoy, patrol, escort and minesweeping tasks, anti-submarine operations and shore bombardment missions. Following Austria-Hungary's defeat in 1918, 79 T was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which later became the Royal Yugoslav Navy, and was renamed T4. At the time, she and the seven other 250t-class boats were the only modern sea-going vessels of the fledgling maritime force. During the interwar period, T4 and the rest of the navy were involved in training exercises and cruises to friendly ports, but activity was limited by reduced naval budgets. In 1932, she ran aground on the Dalmatian coast and became a total loss.
The Temes class was a class of originally Austro-Hungarian river monitor warships used during World War I. A notable member was Bodrog.
