The Ukrainian Navy () is the maritime force of Ukraine, and one of the eight service branches of the Armed Forces of Ukraine.

The naval forces consist of five components: surface forces, submarine forces, naval aviation, coastal rocket artillery and naval infantry. In 2022, the Ukrainian Navy had 15,000 personnel, including 6,000 naval infantry. It is headquartered in Odesa; prior to the 2014 annexation of Crimea by the Russian Federation, it was based in Sevastopol.

Ukraine's navy was composed largely of remnants of the Soviet Black Sea Fleet. Ukraine had sought to update and expand its naval forces,Order of the Cabinet of Ministers of Ukraine (9 August 2005). Verkhovna Rada website.Resolution of the Cabinet of Ministers of Ukraine (1 March 2006).Verkhovna Rada website. including planning a new class of frigates, patrol boats, and gunboats. However, since the ongoing Russian invasion of the country began in February 2022, the Ukrainian Navy has been severely diminished, with all its largest warships being lost, including its flagship, which was scuttled a month into the war to prevent capture.

The Ukrainian Navy previously operated in the Black Sea, including the Sea of Azov and Danube Delta; additionally, it took part in multinational efforts such as Operation Active Endeavour and Operation Atalanta in the Mediterranean and Horn of Africa, respectively. However, Russia gained complete control of the Sea of Azov and significant control of the Black Sea during the ongoing conflict.

Despite its reduced size and capabilities, Ukrainian Naval Forces remain operationally active via the use of naval asymmetrical warfare and the use of sea drones, allowing the Ukrainian Navy to hamper the operations of its Russian counterpart, limiting their naval control over the Black Sea.

History

Zaporizhian (Ukrainian) Cossacks Fleet,

The Ukrainian Naval Forces trace their origins to the Zaporizhian Sich Cossacks, who would frequently raid Ottoman settlements along the Black Sea coast. Cossacks used small ships called chaikas, which were similar in design to Viking long ships. Although technologically inferior to the Turks, the Cossacks had great success against their opponent. In 1614, the Cossack forces were able to raid and destroy Trabzon.

In 1615, the Cossacks were able to mount a raid on Istanbul itself, destroying several suburbs of the city. In 1616, a Cossack fleet was able to reach the Bosphorus, once again raiding the surrounding countryside. A Turkish fleet sent to destroy the Cossack forces was defeated in 1617. The Cossacks once again managed to mount an attack on Istanbul in 1625, forcing the Sultan to temporarily flee the capital.

The Cossacks used several strategies to attack the larger Ottoman naval forces, such as positioning their ships during battle in a way where the sun was always at their back. The Cossack ships were small with a low profile, making them hard to hit by cannon. Cossacks were typically armed with small arm muskets, and during battle had the goal of killing the crew and boarding the ship to take it over, rather than sinking the ship.

Ukrainian People's Republic navy (1917–1921)

During 1917 Russian Revolution, several ships of the Russian Imperial Navy's Black Sea Fleet, commanded and crewed by ethnic Ukrainians, declared themselves the Navy of the newly autonomous Ukrainian People's Republic. Black Sea Fleet commander Mikhail Sablin raised the colours of the Ukrainian National Republic on 29 April 1918.Operation Fleet For Ukraine, The Ukrainian Week (16 May 2011) Crimean campaign of Peter Bolbochan in 1918, Radio Free Europe/Radio Liberty (April 2018) Few further steps on establishing a navy were made as the Ukrainian government lost control over coastal territories.

After the Revolution 1917 the Central Committee of the Black Sea Fleet. was in command.

The Ukrainian People's Republic aspired to take control of the Fleet. On 17 October 1917 the 2nd rank Captain Ye.Akimov was appointed the representative of the Central Council of Ukraine at the command of the Black Sea Fleet. The General Secretariat for Naval Affairs was established within the government of the Central Rada in Kyiv (in January 1918 it was reformed in a Ministry). The head of it became D. Antonovich. The Main Navy Staff was led by Captain Jerzy Świrski. For the educational and agitational purposes of the seamen the Central Rada seconded the commissars to Odesa, Mykolaiv, Kherson and Sevastopol. On 22 December 1917 the Naval Ministry in Kyiv was established.

Starting October 1917 the crews of the ships established military councils; the blue-yellow flags were flying from the masts. The ships and Russian cruiser Pamiat Merkuria (1907) were the first examples.

In November 1917 in Sevastopol was established the Sahaidachny Sea Battalion (kurin) which on 24 November 1917 was sent to Kyiv to extinguish Bolshevik uprisings and participated in the Kiev Arsenal January Uprising.

On 22 November 1917 the whole crew of the newest and most powerful warship of the Black Sea Fleet Volya swore fealty to the Central Rada, followed soon by several ships and submarines. In December 1917 the Black Seas Fleet squadron under Ukrainian flags led by the Russian battleship Imperator Aleksandr III and included another cruiser and three destroyers participated in the evacuation of the 127th Infantry Division from Trabzon back to Ukraine.

On 29 December 1917 most of the Black Sea Fleet was taken over by Bolsheviks.

As part of Operation Faustschlag German Empire forces had been advancing on Sevastopol with a goal to capture the Black Sea Fleet. Having no support from the land forces, Admiral Sablin was forced enter negotiations regarding cessation of hostilities. The Germans however rejected the armistice proposals and the advance continued. In April 1918 German and Ukrainian troops invaded Crimea.

On 29 April 1918, fleet-commanding Rear-admiral Sablin (Russian) gave an order to hoist Ukrainian national flags over all ships in Sevastopol (the medal to the right commemorates that event). That day he was appointed commander-in-chief of the Ukrainian Navy. A telegram to Kyiv was sent from the staff ship Georgiy Pobedonosets “Effective today the Sevastopol fortress and the Fleet in Sevastopol raised the Ukrainian flag. Admiral Sablin assumed the command of the Fleet”. Having no reply the admiral ordered to repeat the telegram beginning with the words “Comrades of Kiev Central Rada...”.

Sablin was unaware that at that moment the Central Rada in Kyiv was already history. The Germans started to occupy Sevastopol, because the Bolsheviks began to lead away ships. Centroflot (the combined fleet revolutionary committee), in order to save the Fleet, took a decision to move it to Novorossiysk. But on 30 April 1918, only the small part of the fleet under command of Admiral Sablin, which trusted the Bolsheviks, headed for Novorossiysk and hoisted Russian St. Andrew (saltire) ensigns. The greater part of the Ukrainian fleet remained in Sevastopol – there were 30 destroyers and torpedo boats, 25 auxiliaries, 7 battleships and small craft as well as 15 submarines left in Sevastopol under Admiral Myhaylo Ostrogradskiy who in this situation assumed command.

On 1 May 1918 Germans captured the ships remaining in Sevastopol, because the actions of Bolsheviks violated the peace agreement. On 17 June 1918, 1 dreadnought and 6 destroyers returned from Novorossiysk to Sevastopol, where they were also captured. The greater part of the ships remaining in Novorossiysk were destroyed by their own crews on Lenin's command. In July–November 1918 Germans gradually transferred many ships to the command of Ukrainian government (Hetman Pavlo Skoropadskyi).

The main Ukrainian sea power concentrated in Odesa and Mykolaiv was more than 20 minesweepers, 7 small cruisers, 1 dreadnought and more than 30 auxiliaries. In Sevastopol there were only 2 old battleships under Ukrainian flags. On 18 July 1918 the Naval Ministry in Kyiv established new naval ensigns and some rank flags (e.g. flag of Naval Minister, flag of Deputy Minister). The old Russian jack remained as Ukrainian naval jack. It was regarded as symbol of glory of Black Sea Fleet, whose crews were in large part previously Ukrainian. On 17 September Germans gives Ukraine 17 U-boats.

In December 1918, when naval forces of the Entente were approaching Sevastopol, Ukrainian Rear-admiral V. Klokhkovskyy commanded all ships to hoist Russian St. Andrew (saltire) ensigns. It was a demonstration of good intentions for the Entente. However, the Entente captured the Black Sea Fleet and subsequently transferred it to the Russian "White" forces. In Ukrainian hands remained only small in numbers subdivisions of marines. Ukrainian naval authorities existed until 1921.

Contemporary Navy of Ukraine Independence and the "Battle for the oath"

The origins of the contemporary Ukrainian Naval Forces intertwined with the fate of the Soviet Black Sea Fleet and with the modern history of the Crimea. Following the dissolution of the Soviet Union (1991), the administration of the Soviet Armed Forces passed to the Joint Armed Forces of the Commonwealth of Independent States (CIS) for a transitional period pending agreement on the division of the ex-Soviet military between members of the former Soviet Union. Marshal of Aviation Yevgeny Shaposhnikov became commander of the Joint CIS Armed Forces command on 14 February 1992.

On 6 December 1991 the Supreme Council of Ukraine (Verkhovna Rada) adopted a resolution on the laws of Ukraine "About the Defense of Ukraine" and "About the Armed Forces of Ukraine", as well as the text of a military oath. On the same day, in the parliament of Ukraine chamber, the Minister of Defense of Ukraine, Kostyantyn Morozov, became the first person to take the oath. On 10 December 1991 the Supreme Council of Ukraine ratified the Belavezha Accords.

On 12 December 1991 the president of Ukraine issued ukase #4, ordering all military formations based in Ukraine to pledge allegiance by 20 January 1992. The vast majority of the Black Sea Fleet ignored the order. On 1 January 1992 the newspaper Vympyel of the Black Sea Fleet Filipp Oktyabrskiy Training unit (edited by Captain-Lieutenant Mykola Huk) published the military oath and the anthem of Ukraine in the Ukrainian language.

On 3 January 1992 Ukraine started the practical formation of its national armed forces. On 8 January 1992 the Officers' Assembly of the Black Sea Fleet appealed to all leaders of the CIS to recognise the Black Sea Fleet as an operational-strategic formation and not subordinate to Ukraine. On 12 January 1992, the brigade of border troops in Balaklava (Sevastopol) became the first military formation to pledge allegiance to Ukraine.

On 14 January 1992 the governor of Sevastopol appealed to the Supreme Councils of both Ukraine and the Russian Federation, urging faster adoption of a decision on the status of the Black Sea Fleet. On 16 January 1992, an agreement between the CIS members was signed on the oath in strategic formations.

On 18 January 1992, the 3rd company of the divers school became the first formation of the Black Sea Fleet to pledge their allegiance to Ukraine, along with the Maritime Department of the Sevastopol Institute of Instrument Engineering. On the next day, forty-six naval pilots pledged their allegiance to Ukraine at the central square (Ploshcha Lenina) of Mykolaiv.