Raid on Constanța

The Raid on Constanța was an attack by the Soviet Black Sea Fleet on the Romanian port of Constanța on 26 June 1941, shortly after the beginning of Operation Barbarossa, the Axis invasion of the Soviet Union, and resulted in the only encounter between major warships in the Black Sea during World War II. The attack was intended to be a coordinated effort between the fleet's ships and aircraft to split the attention of the defenders, but the bombers did not attack at the designated times.

Two destroyer leaders were ordered to bombard the port in the early morning, covered by a cruiser and a destroyer. They caused some damage, but they were engaged by Axis coastal artillery and several Romanian ships. The two destroyer leaders were slightly damaged and withdrew under fire, steaming into a Romanian minefield; one of the destroyer leaders was sunk and the cruiser was damaged by the mines as they departed the area.

Several groups of bombers later bombed the city that day and the following night, but caused no damage to their targets. Nine bombers were shot down by anti-aircraft fire and Axis fighters. The defeat caused the Soviets to be much more cautious in using their ships within range of Axis defenses.

Background

After Romania joined the Tripartite Pact in November 1940, the Germans agreed to construct coastal artillery batteries to bolster obsolete Romanian coastal defences, including the ''Tirpitz'' battery south of Constanța, armed with three World War I-era SK L/45 guns. The battery was operated by 700 Kriegsmarine personnel, although it was nominally under Romanian control like all Axis forces in Romania.

Forewarned by Adolf Hitler about the scheduled date for the German invasion of the Soviet Union, codenamed Operation Barbarossa, on 22 June 1941, the Romanian minelayers , ''Regele Carol I'' and ''Aurora'' laid 1,000 mines between Cape Midia and Tuzla to protect Constanța between 16 and 19 June.

On 22 June the Royal Romanian Air Force launched attacks against Soviet airfields in Bessarabia, destroying 37 Soviet aircraft on the ground. In retaliation four Tupolev SB light bombers of the Black Sea Fleet's 40th Bomber Aviation Regiment and four Ilyushin DB-3 bombers from the 2nd Mine-Torpedo Aviation Regiment unsuccessfully attacked Constanța during the afternoon. Two SBs failed to return;Bernád, Karlenko & Roba, p. 22 the Romanian fighter pilot Horia Agarici was credited with shooting down three SB bombers down during the raid and was celebrated as a national hero in a propaganda song. Three other DB-3s later bombed Constanța that night with neither effect nor loss. With the failure of the initial air attacks, Vice Admiral Filipp Oktyabrsky, commander of the Black Sea Fleet, decided to launch a combined aerial and naval attack on Constanța and a seaborne assault on the Danube Delta.Trigg, pp. 81–82

Bombardment

Two destroyer leaders, and , covered by the cruiser ,Hervieux, pp. 70–71Forczyk, p. 39Yakubov & Worth 2008, p. 112 and the destroyers and , were organized into a task force for the attack. The latter destroyer, however, ran aground en route and had to return to port. The Soviets also had the battleship '' Pariskaya Komuna'' kept offshore to exploit any initial success, and Soviet bombers also joined in the attack.

The ''Voroshilov'' task force approached and shelled Constanța in the early hours of 26 June 1941, setting ablaze some oil tanks and warehouses, and damaging port infrastructure. The Romanians were expecting a Soviet raid and their defences, consisting of the destroyers , and the German coastal battery ''Tirpitz'', were prepared to engage the Soviet ships. In ten minutes, starting from 03:58, ''Moskva'' and ''Kharkov'' fired no less than 350 shells from their guns. The two Romanian warships opened fire with their guns from a distance of at 04:12, hitting ''Kharkov'' at 04:20. The ''Tirpitz'' battery also opened fire at 04:22. ''Moskva'' was also damaged by the Romanian warships, her mainmast being brought down by a 120 mm shell while ''Kharkov'' was further damaged by ''Tirpitz''. The surprised Soviets began to withdraw, but sailed into a Romanian minefield. ''Moskva'' struck a mine and sank, with 268 sailors killed and 69 survivors captured by the Romanians.Forczyk, p. 33 According to most sources, she was sunk by Romanian mines, although shells from ''Regina Maria'' and the ''Tirpitz'' coastal battery or an unintentional friendly fire torpedo attack by Soviet submarine ''Shch-206'' have also been suggested as causes. ''Voroshilov'' was also damaged by a mine that exploded when ''Soobrazitelny''s paravanes triggered it.

Long-Range Aviation and the Black Sea Fleet's 63rd Soviet Naval Aviation Brigade coordinated their attacks against targets in Bucharest, Sulina, Constanța and the Danube River on the morning of 26 June. Seventeen DB-3s from the 21st Long-Range Bomber Regiment took off from their airfield in Saky, Crimea. Anti-aircraft fire from the ships in Constanța harbor was heavy and at least one bomber deliberately dropped its bombs into the sea. They were intercepted by Axis fighters after bombing Constanța and one bomber was shot down, although the bomber gunners claimed to have shot down two fighters. The regiment lost seven aircraft that morning to all causes, and an additional pair returned home with one engine knocked out. Afterwards, the Long-Range Aviation commanders decided that their bombers would only fly over Romania at night.

The 63rd Naval Aviation Brigade's operations were more closely integrated into the navy's bombardment with attacks on Constanța in three waves. The first was intended to be before the ships opened fire, the second wave was to be during the bombardment and the last was to distract the Axis forces as the ships withdrew. The pair of Ilyushin Il-4 twin-engined bombers from the 2nd Mine-Torpedo Aviation Regiment that comprised the first wave had to return because of mechanical problems before reaching their target. Of the two SB fast bombers of the second wave, one returned because of a malfunction and the other failed to return. The third wave was intercepted by a squadron () of Messerschmitt Bf 109 fighters from the 3rd Group of Fighter Wing 52 ( 52), well after ''Moskva'' had sunk, which claimed to have shot down 11 DB-3s and 7 SBs. Seven SBs did get through to attack Constanța.

The Romanians claimed to have shot down nine Tupolev SB bombers during the battle, two of them claimed by ''Amiral Murgescu'' and one by ''Mărăşti''. The remaining six aircraft were shot down by a Romanian AA battery of Ansaldo guns.Storea & Băjenaru, p. 110 The failure of the raid, together with other losses suffered by the Black Sea Fleet, caused Oktyabrsky to be much more cautious in his use of surface warships.

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1941 in Romania
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