Sulina is a town and free port in Tulcea County, Northern Dobruja, Romania, at the mouth of the Sulina branch of the Danube. It is the easternmost point of Romania.
The Romanian Naval Forces is the principal naval branch of the Romanian Armed Forces and operates in the Black Sea and on the Danube. It traces its history back to 1860.
The Bulgarian Navy is the navy of the Republic of Bulgaria and forms part of the Bulgarian Armed Forces.
The M-class submarines, also Malyutka class, were a class of small, single-, or 1½-hulled coastal submarines built in the Soviet Union and used during World War II. The submarines were built in sections so they could easily be transported by rail. The production was centered in the Gorky Shipyard on the Volga River, after which the sections were transported by railway to Leningrad for assembly and fitting out. This was the first use of welding on Soviet submarines.
NMS Smeul was a torpedo boat of the Royal Romanian Navy. She was commissioned in 1920, after initially serving as Tb 83 F in the Austro-Hungarian Navy during World War I. She and six more sister ships were awarded to Romania as reparations after the war ended.
The Shchuka-class submarines, also referred to as Sh or Shch-class submarines, were a medium-sized class of Soviet submarines, built in large numbers and used during World War II. "Shchuka" is Russian for pike. Of this class, only two submarines entered service after 1945, although they were launched before the war.
The Black Sea Campaigns were the operations of the Axis and Soviet naval forces in the Black Sea and its coastal regions during World War II between 1941 and 1944, including in support of the land forces.
The Regele Ferdinand class was a pair of destroyers built in Italy for the Romanian Navy during the late 1920s. The sister ships were the most modern and powerful warships of the Axis powers in the Black Sea during World War II. During the war they participated in the 1941 Raid on Constanța and the 1944 evacuation of the Crimea, although they spent the vast majority of the war escorting convoys in the Black Sea. The Romanians claimed that they sank two submarines during the war, but Soviet records do not confirm their claims. Following King Michael's Coup, where Romania switched sides and joined the Allies in late 1944, the two ships were seized and incorporated into the Soviet Black Sea Fleet. They were returned to Romania in 1951 and served until 1961 when they were scrapped.
The Yugoslav minelayer Zmaj was built in Weimar Germany for the Royal Yugoslav Navy in the late 1920s. She was built as a seaplane tender, but does not appear to have been much used in that role and was converted to a minelayer in 1937. Shortly before the Axis invasion of Yugoslavia in April 1941 during the Second World War, she laid minefields along the Dalmatian coast, perhaps inadvertently leading to the sinking of two Yugoslav passenger ships. Slightly damaged by Italian dive bombers and then captured by the Italians during the invasion, she was soon handed over to the Germans. While in their service the ship was renamed Drache, had her anti-aircraft (AA) armament improved, and was used as a seaplane tender and later as a troop transport. In the latter role she participated in over a dozen convoys between the Greek port of Piraeus and the Greek island of Crete between December 1941 and March 1942.
NMS Amiral Murgescu was a minelayer and convoy escort of the Romanian Navy, the first sea-going warship built in Romania and the largest Romanian-built warship of World War II. She laid numerous minefields, from the Bulgarian port of Burgas to the Crimean port of Sevastopol, which inflicted significant losses to the Soviet Black Sea Fleet. She also carried out numerous convoy escort missions and took part in the Axis evacuation of the Crimea in May 1944. Due to her success in combat, she was decorated twice by May 1944. She was captured by the Soviet Union in September 1944 and served until 1988, when she was scrapped.
Submarine warfare in the Black Sea in World War II during 1941 primarily involved engagements between submarines of the Soviet Black Sea Fleet attacking Axis merchantmen defended by Romanian and Bulgarian warships. These engagements were a part of the naval Black Sea campaigns between Axis and Soviet naval forces.
The Battle of Jibrieni was an attack on 17 December 1941 by a Soviet submarine on an Axis convoy and its Romanian escorts off the coast of the Romanian village of Jibrieni. The engagement ended with the sinking of the attacking Soviet submarine M-59.
The Romanian Navy during World War II was the main Axis naval force in the Black Sea campaigns and fought against the Soviet Union's Black Sea Fleet from 1941 to 1944. Operations consisted mainly of mine warfare, but there were also escort missions and localized naval engagements. The largest naval action fought by the Romanian Navy was the 26 June 1941 Raid on Constanța, and its most extensive operation was the 1944 evacuation of the Crimea.
NMS Mărășești was one of four Vifor-class destroyers ordered by Romania shortly before the beginning of the First World War from Italy. All four sister ships were requisitioned when Italy joined the war in 1915. Originally named Vârtej by the Romanians, she was renamed Nibbio in Italian service. Not completed until mid-1918, the ship engaged Austro-Hungarian ships in the Adriatic Sea only once before the war ended in November. She was renamed Mărășești when she was re-purchased by the Romanians in 1920.
NMS Aurora was a small minelayer of the Romanian Navy. After initially serving in the Austro-Hungarian Navy during World War I and later in the French Navy, she was transferred to Romania and fought during World War II, being sunk in July 1941.
NMS Alexandru cel Bun was the first minelayer of the Romanian Naval Forces. Built by the United Kingdom in 1882, she served in the Romanian Navy for five decades, until being scrapped in the mid-1930s.
Between 1941 and 1944, Romania held control over much of the Ukrainian Black Sea coast East of the Crimea. This was acquired during Operation Barbarossa. The Romanian conquest of the Soviet Western Black Sea coast started in July 1941 during Operation München and ended in October that year, after the Siege of Odessa. In the aftermath of these actions, Romania (re)acquired two new sectors of coastline: the Bessarabian coast and the Transnistrian Coast. The latter was lost in April 1944, but the former was successfully defended until August 1944.
NMS Regele Ferdinand was the lead ship of her class of two destroyers built in Italy for the Romanian Navy in the late 1920s. After the Axis invasion of the Soviet Union on 22 June 1941, she was limited to escort duties in the western half of the Black Sea during the war by the powerful Soviet Black Sea Fleet which heavily outnumbered Axis naval forces in the Black Sea. The ship may have sunk two Soviet submarines during the war. In early 1944 the Soviets were able to cut off and surround the port of Sevastopol on the Crimean Peninsula. Regele Ferdinand covered convoys evacuating Axis troops from Sevastopol and was badly damaged in May when she rescued some troops herself.
NMS Regina Maria was the second and last of the two Regele Ferdinand-class destroyers built in Italy for the Romanian Navy in the late 1920s. After the Axis invasion of the Soviet Union on 22 June 1941, she took part in the Raid on Constanța a few days later and may have damaged a Soviet destroyer leader during the battle. The powerful Soviet Black Sea Fleet heavily outnumbered Axis naval forces in the Black Sea and the Romanian destroyers were limited to escort duties in the western half of the Black Sea during the war. In early 1944 the Soviets were able to cut off and surround the port of Sevastopol on the Crimean Peninsula. Regina Maria covered convoys evacuating Axis troops from Sevastopol in May and rescued several hundred herself.
Romania 