The Gulf of Finland is the easternmost arm of the Baltic Sea. It extends between Finland to the north and Estonia to the south, to Saint Petersburg in Russia to the east, where the river Neva drains into it. Other major cities around the gulf include Helsinki and Tallinn. The eastern parts of the Gulf of Finland belong to Russia, and some of Russia's most important oil harbors are located farthest in, near Saint Petersburg. As the seaway to Saint Petersburg, the Gulf of Finland has been and continues to be of considerable strategic importance to Russia. Some of the environmental problems affecting the Baltic Sea are at their most pronounced in the shallow gulf. Proposals for a tunnel through the gulf have been made.
Suomenlinna, or Sveaborg, is an inhabited sea fortress composed of eight islands, of which six have been fortified; it is about 4 km southeast of the city center of Helsinki, the capital of Finland. Suomenlinna is popular with tourists and locals, who enjoy it as a picturesque picnic site. Originally named Sveaborg, or Viapori as referred to by Finnish-speaking Finns, it was renamed in Finnish to Suomenlinna in 1918 for patriotic and nationalistic reasons, though it is still known by its original name in Sweden and by Swedish-speaking Finns.
The Finnish War was fought between the Kingdom of Sweden and the Russian Empire from 21 February 1808 to 17 September 1809 as part of the Napoleonic Wars. As a result of the war, the eastern third of Sweden was established as the autonomous Grand Duchy of Finland within the Russian Empire. Other notable effects were the Swedish parliament's adoption of a new constitution and the establishment of the House of Bernadotte, the new Swedish royal house, in 1818.
Porkkalanniemi is a peninsula in the Gulf of Finland, located at Kirkkonummi (Kyrkslätt) in Southern Finland.
Harju County, is one of the fifteen counties of Estonia. It is situated in Northern Estonia, on the southern coast of the Gulf of Finland, and borders Lääne-Viru County to the east, Järva County to the southeast, Rapla County to the south, and Lääne County to the southwest. The capital and largest city of Estonia, Tallinn, is situated in Harju County. Harju County is the largest county in Estonia in terms of population, as almost half (45%) of the Estonia's population lives in Harju County.
The Russo-Swedish War of 1788–1790 was fought between Sweden and Russia from June 1788 to August 1790. The war was ended by the Treaty of Värälä on 14 August 1790 and took place concomitantly with both the Austro-Turkish War (1788–1791), Russo-Turkish War (1787–1792) and Theatre War. The war was, overall, mostly insignificant for the parties involved.
Kronstadt is a Russian port city in Kronshtadtsky District of the federal city of Saint Petersburg, located on Kotlin Island, 30 km (19 mi) west of Saint Petersburg, near the head of the Gulf of Finland. It is linked to the former Russian capital by a combination levee-causeway-seagate, the St Petersburg Dam, part of the city's flood defences, which also acts as road access to Kotlin island from the mainland.
Naissaar is an island in Estonia. It is situated in the Gulf of Finland, northwest of the capital city Tallinn, and is administratively part of the Viimsi parish. The island covers an area of 18.6 square kilometres. It is 8 kilometres long and 3.5 kilometres wide, and lies about 8.5 kilometres from the mainland. The highest point on the island is Kunilamägi, which is 27 metres above sea level. The island consists predominantly of coniferous forest and piles of stones and boulders. In 2020, the island had a population of 17; in 2011 the island had 35 or so permanent residents and some summer residents. Administratively the island is divided into three villages: Lõunaküla (Storbyn), Tagaküla (Bakbyn), and Väikeheinamaa (Lillängin).
The Battle of Hogland was a naval battle that took place on 17 July [O.S. 6 July] 1788 during the Russo-Swedish War (1788–1790).
The Sveaborg rebellion was an Imperial Russian military mutiny which broke out on the evening of 30 July 1906 amongst the garrison of the coastal fortress of Sveaborg in the coast of Helsinki in the Grand Duchy of Finland. The mutiny was part of the aftermath of the Russian Revolution of 1905, which by summer 1906 had effectively been suppressed in most other regions of the Russian Empire.
The Battle of Vyborg Bay was a naval battle fought between Russia and Sweden on July 3, 1790 in Vyborg Bay off the coast of Vyborg during the Russo-Swedish War (1788–1790). The Swedish Navy suffered heavy losses, losing seven ships of the line and three frigates, but Gustav III of Sweden eventually ensured a Swedish naval escape through a Russian naval blockade composed of units of the Baltic Fleet, commanded by Admiral Vasily Chichagov. British historians would later call the Battle of Vyborg Bay the "Baltic Trafalgar". The battle ranks among the world's largest historical naval battles and also among the most influential, as it introduced the naval battle concept of "firepower over mobility".
Väinämöinen was a Finnish coastal defence ship, the sister ship of the Finnish Navy's flagship Ilmarinen and also the first ship of her class. She was built at the Crichton-Vulcan shipyard in Turku and was launched in 1932. Following the end of the Continuation War, Väinämöinen was handed over to the Soviet Union as war reparations and renamed Vyborg. The ship remained in Soviet hands until her scrapping in 1966.
The British campaign in the Baltic 1918–1919 was a part of the Allied intervention in the Russian Civil War. The codename of the Royal Navy campaign was Operation Red Trek. The intervention played a key role in enabling the establishment of the independent states of Estonia and Latvia. It failed to secure the control of Petrograd by White Russian forces, which was one of the main goals of the campaign.
The Krepost Sveaborg was an Imperial Russian system of land and coastal fortifications constructed around Helsinki during the First World War. The purpose of the fortress was to provide a secure naval base for the Russian Baltic fleet and to protect Helsinki and block routes to Saint Petersburg from a possible German invasion. Krepost Sveaborg was part of Peter the Great's Naval Fortress, a coastal fortification system protecting access to Saint Petersburg by sea. The central part of Krepost Sveaborg was the old fortress of Suomenlinna where the fortress headquarters were located. Due to technological advances in artillery the old fortress was no longer capable of providing a sufficient protection, and a new main defensive line was built well beyond the old fortress boundaries. New coastal artillery guns built on outlying islands protected Krepost Sveaborg from the sea, while fortified lines constructed around Helsinki were intended to stop any attacks on land. The primary coastal guns were 10 in (254 mm) model 1891 guns and 6 in (152 mm) model 1892 Canet guns. Older 11 in (279 mm) model 1877 guns were also used. In summer 1917 the fortress had two hundred coastal or anti-landing guns, of which 24 were 10-inch guns in six batteries, 16 were 6-inch Canet guns in four batteries and twelve were 11-inch guns in three batteries. The artillery used in land fortifications included older coastal guns, old fixed carriage guns and newer light field guns. In March 1917, Krepost Sveaborg had a total of 463 guns, although many of them were obsolescent. Krepost Sveaborg was still partly incomplete in 1917 when the February Revolution halted most of the construction work. Some further construction work was carried out during the remaining year, but all work halted during the October Revolution. Following the Finnish Declaration of Independence, parts of the land fortifications were used in the Finnish Civil War. The coastal fortifications were later taken over by Finland to protect Helsinki, while the land fortifications were mostly abandoned and disarmed.
Finnish–Estonian defence co-operation began in 1930 with a secret military pact between Finland and Estonia against the threat of the Soviet Union. Open co-operation ended in 1939, as the Soviets pressured the Estonian government, but it continued secretly with information-sharing during the Winter War.
Stepan Maximovich Petrichenko was a Russian revolutionary, an anarcho-syndicalist politician, the head of the self-styled "Soviet Republic of Soldiers and Fortress-Builders of Nargen" and in 1921, de facto leader of the Kronstadt Commune, and the leader of the revolutionary committee which led the Kronstadt rebellion of 1921.
The 11-inch mortar M1877 was a Russian 280 mm (11 in) coastal and fortress mortar that was used in the Russo-Japanese War and World War I.
Smetlivy was one of 29 Gnevny-class destroyers built for the Soviet Navy during the late 1930s. Completed in 1938, she was assigned to the Baltic Fleet and played a minor role in the 1939–1940 Winter War against Finland. After the start of the German invasion of the Soviet Union in June 1941, the ship participated in the Gulf of Riga Campaign before withdrawing to Tallinn, Estonia. Smetlivy supported Soviet forces during the defense of Tallinn in August and covered the subsequent evacuation to Leningrad. The ship provided naval gunfire support to the defenders of Leningrad over the next several months before she was assigned to evacuate Soviet troops from their enclave in Hanko, Finland, in November. Smetlivy struck several mines returning from Hanko and sank with heavy loss of life.
Azard was one of eight Orfey-class destroyers built for the Russian Imperial Navy during World War I. Completed in 1916, she served with the Baltic Fleet and joined the Bolshevik Red Fleet after the October Revolution of 1918. She was active during the Russian Civil War, taking part in several engagements against British ships during the British campaign in the Baltic. The destroyer was renamed Zinoviev in 1922 and Artem in 1928. She remained in service with the Soviet Baltic Fleet when Germany invaded the Soviet Union in 1941, and was sunk by a mine on 28 August.
