Kronstadt (Russian: Кроншта́дт), also spelled Kronshtadt, Cronstadt or Kronštádt (German: Krone for "crown" and Stadt for "city"; Estonian: Kroonlinn), is a municipal town in Kronshtadtsky District of the federal city of Saint Petersburg, Russia, located on Kotlin Island, 30 kilometers (19 mi) west of Saint Petersburg proper near the head of the Gulf of Finland. Population: 43,005 (2010 Census); 43,385 (2002 Census).
It is also Saint Petersburg's main seaport. In March 1921, it was the site of the Kronstadt rebellion.
Traditionally, the seat of the Russian admiralty and the base of the Russian Baltic Fleet were located in Kronstadt guarding the approaches to Saint Petersburg. The historic centre of the city and its fortifications are part of the World Heritage Site Saint Petersburg and Related Groups of Monuments.
Kronstadt has been a place of pilgrimage for Orthodox Christians for many years due to the holy memory of Saint John of Kronstadt. Bus and water tours to Kronstadt are taken daily from Saint Petersburg.
Location of Kronstadt
Location of Kronstadt
Kronstadt (Saint Petersburg)
|Federal subject||Saint Petersburg|
|• Total||19.35 km2 (7.47 sq mi)|
| • Estimate |
|• Density||2,200/km2 (5,800/sq mi)|
|Dialing code(s)||+7 812|
Kronstadt was founded by Peter the Great, whose Imperial Russian forces took the island of Kotlin from the Swedes during the Great Northern War in 1703. The first fortifications were inaugurated on 18 May [O.S. 7 May] 1704.
These fortifications, known as Kronshlot (Кроншлот), were constructed very quickly. During the winter the Gulf of Finland freezes completely. Under the command of Governor-general Alexander Danilovich Menshikov, workers used thousands of frames made of oak logs filled with stones. These were carried by horses across the frozen sea, and placed in cuttings made in the ice. Thus, several new small islands were created, and forts were erected on them, closing all access to Saint-Petersburg by the sea. Only two narrow navigable channels remained, and the strongest forts guarded them.
Kronstadt was thoroughly refortified in the 19th century. The old three-decker forts, five in number, which formerly constituted the principal defences of the place, and defied the Anglo-French fleets during the Crimean War, became of secondary importance. From the plans of Eduard Totleben a new fort, Constantine, and four batteries were constructed (1856–1871) to defend the principal approach, and seven batteries to cover the shallower northern channel. All these fortifications were low and thickly armored earthworks, powerfully armed with heavy Krupp guns in turrets. The town is surrounded with an enceinte.
In summer 1891, the French fleet was officially—and triumphantly—received in Kronstadt. It was a first step towards the coming Franco-Russian Alliance.
During the Petrograd (now Saint Petersburg) riots of the February revolution, the sailors of Petrograd joined the revolution and executed their officers, thus gaining a reputation as dedicated revolutionaries. During the civil war, the sailors participated on the red side, until 1921, when they rebelled against the Bolshevik rule.
Kronstadt and the supporting forts and minefields were the key to the protection of Petrograd from foreign forces. Despite this, the cruiser Oleg was torpedoed and sunk by a small motor boat after participating in a bombardment of Krasnaya Gorka fort that had revolted against the Bolsheviks. This was followed on August 18, 1919, by a raid of seven Royal Navy Coastal Motor Boats into the harbor of Kronstadt itself, damaging the Soviet battleships Petropavlovsk and Andrei Pervozvanny, and sinking a submarine supply ship, the Pamiat Azova.
In 1921, a group of naval officers and men, together with soldiers and civilian supporters, rebelled against the Bolshevik government in Soviet Kronstadt. The garrison had previously been a centre of major support for the Bolsheviks, and throughout the Civil War of 1917–1921, the naval forces at Kronstadt had been at the vanguard of the main Bolshevik attacks. Their demands included freedom of speech, the end of deportation to work camps, a change in Soviet war politics, and liberation of the soviets (workers' councils) from "party control". After brief negotiations, Leon Trotsky (then the Minister of War in the Soviet Government, and the leader of the Red Army) responded by sending the army to Kronstadt, along with the Cheka. The uprising was thus suppressed.
In the late 1930s, Kronstadt lived the life of the fortified city and was the base of the Baltic Fleet. During that time Kronstadt was an important training center of the Soviet Navy. The Kronstadt Ship Repair Plant (Navy Plant) overhauled and repaired surface ships and submarines of the Baltic Fleet. All forts and batteries of the city were under reconstruction.
At 23:37 on June 21, 1941, the operational readiness of Fleet Number 1 was announced by Baltic Fleet Commander Vice Admiral V. Tributs according to the order of the People's Commissar of the Navy. Several hours later the first German aircraft began mining the fairway near Kronstadt. The duty officer (First Lieutenant S. Kushnerev) ordered antiaircraft batteries to open fire on the enemy planes; several aircraft were shot down or damaged. Twenty-seven German planes took part at the first attack, and three of them were destroyed by the anti-aircraft guns of the 1st Air Defence Regiment of the Baltic Fleet. This regiment was situated on the southern forts.
During World War II, Kronstadt was bombed several times by the Luftwaffe. In August 1941 the Luftwaffe began bombing Kronstadt regularly. The most notable bombing was Stuka ace Hans-Ulrich Rudel's sinking of the Soviet battleship Marat.
To prevent an enemy landing, 13 artillery batteries were established in Kronstadt and nine more batteries beyond the city, (but on the island Kotlin). The main lookout was located in the Naval Cathedral. Visual range reached 45 km (28 mi). The coastal defense of Kronstadt included two infantry regiments.
In late August, the Red Army in the Baltic States was in a critical situation. Tallinn, the main base of the fleet, was in danger and a decree to relocate the fleet from Tallinn to Kronstadt was given. By the time the Soviets had decided on a maritime evacuation of Tallinn, over 200 Soviet civilian and military vessels had been assembled in the harbor of Tallinn.
After the evacuation of Tallinn, the submarine subdivision had been organized in Kronstadt. By the end of 1941, 82 naval operations were made. Hitler was enraged, because Soviet submarines frequently disrupted military supplies of strategic materials from Sweden to Germany. The Germans tried to block completely the exit from the Gulf of Finland with antisubmarine nets and mines. Despite these efforts, the Soviet submariners continued to attack German ships. In 1942, 29 German vessels were sunk. Submarines cooperated with reconnaissance aircraft in searching for military targets.
But the Soviet submarines had broken through the mine barrages in the Gulf of Finland easily in 1942. To keep the Soviet submarine force away from the Baltic shipping stronger efforts were planned. The minefields would be larger and in addition a double submarine net would be laid from Porkkala to Naissaar, Operation "Walross". The blocking of the Gulf of Finland had been a 100% effective anti-submarine operation. But in 1944, when Finland made a peace treaty with the Soviet Union where one of the conditions was that the soviets would receive one navalbase in Finland Porkkala. The submarine warfare in the Baltic Sea reached a new and final stage after peace with Finland.
The Baltic Fleet sent more than 125,000 people to serve ashore at the front. Eighty-three thousand people fought directly on the Leningrad Front. For the protection of Leningrad 10 brigades of marines, four regiments, and more than 40 separate battalions and companies were formed in Kronstadt.
The Luftwaffe and German artillery brought down thousands of bombs and shells to the Naval Plant and the Arsenal factory. The German air raids in September 1941, damaged the Baltic Fleet ships and infrastructure of the Plant. Several sections of the Plant were destroyed, the docks were showered with falling bombs, and dozens of workers and engineers were killed. Nevertheless, the plant continued its work. In the difficult conditions of the siege, the workers persevered with their work. Often the working day lasted for 18–20 hours.
It was thanks to the power of the Kronstadt Fortress that the destruction of Leningrad (the main industrial and cultural center of the Soviet Union) was successfully prevented. Kronstadt was conferred the status of "City of Military Glory" by the President of the Russian Federation Dmitriy Medvedev on April 27, 2009, for "courage, endurance and mass heroism, exhibited by defenders of the city in the struggle for the freedom and independence of the Motherland".
The town of Kronstadt is built on level ground and is thus exposed to flooding, most notably in 1824. On the south side of the town there are three harbors: the large western or merchant harbor, the western flank of which is formed by a great mole joining the fortifications which traverse the breadth of the island on this side; the middle harbor, used chiefly for fitting out and repairing vessels; and the eastern or war harbor for vessels of the Russian Navy. The Peter and Catherine Canals, connecting with the merchant and middle harbours, traverse the town. Between them stood the old Italian palace of Prince Menshikov, the site of which was later occupied by a pilot school. In the second half of the 18th century the building of former Italian palace began to be used for various military training institutions. In 1771–1798 the Sea Cadet Corps were housed here. The Cadet Corps was transferred to St Petersburg and from 1798 to 1872 the Navigating School was situated in the former palace.
Near with the former Italian palace the Kronstadt sea-gauge is situated. Sea level observations began in Saint Petersburg in 1703. On Kotlin Island, with main naval fortress of the Russian Empire, it began in 1707. This monitoring was necessary because level of the Finnish Gulf could change considerably in a short time, creating problems for shipping. The annual flood also required close monitoring of the water level. The Kronstadt sea-gauge with the tide gauge pavilion is the zero level of the Baltic system of depths and heights. All depths and altitudes (even the heights of spacecraft) in Russia and some other countries (former Russian Empire) are measured from the level of Kronstadt sea gauge. Yuri Gagarin, the first man in space, ironically said in 1967 that this is it the Hub of the Universe.
The modern town's most striking landmark is the enormous Naval Cathedral, built from 1908 to 1913 and considered to represent a culmination of Russian Neo-Byzantine architecture. The older St Andrew Cathedral(1817), formerly Kronstadt's pride and beauty, was destroyed on Communist orders in 1932. St John of Kronstadt, one of the most venerated Russian saints, served there as a priest from 1855 to 1908.
Among other public buildings are the Naval Hospital, the British Seamen's Hospital (established in 1867), the Civic Hospital, the Admiralty (founded 1785), the arsenal, dockyards and foundries, the School of Marine Engineering, and the English Church. The port is ice-bound for 140–160 days in the year, from the beginning of December to April. A very large proportion of the inhabitants are sailors.
The Kronstadt Sea Fortress was considered the most fortified port in the world. Kronstadt still retains some of the "forts", small fortified artificial islands. Formerly, there were 22 such forts, situated in line between the southern and northern shores of the Gulf of Finland. Some fortifications were located inside the city itself and one was on the western shore of the Kronslot Island (on the other side of the main navigational channel).
Nowadays, the construction of the Saint Petersburg Dam has led to some of the forts being demolished. The dam also permitted Kronstadt and some of the forts to be reached without using a boat. Among the most important surviving forts are Fort Konstantin, the biggest in the Gulf of Finland; Fort Rif on the western shore of the island; and the particularly well-preserved Fort Alexander I (Plague Fort). The largest and the newest of the forts, built at the beginning of the 20th century, is Fort Totleben, named after Eduard Totleben.
Kronstadt is twinned with:
Brașov (Romanian pronunciation: [braˈʃov] (listen), Latin: Corona, German: Kronstadt, Transylvanian Saxon: Kruhnen, Hungarian: Brassó) is a city in Romania and the administrative centre of Brașov County.
According to the latest Romanian census (2011), Brașov has a population of 253,200 making it the 7th most populous city in Romania. The metropolitan area is home to 382,896 residents.Brașov is located in the central part of the country, about 166 kilometres (103 miles) north of Bucharest and 380 kilometres (236 miles) from the Black Sea. It is surrounded by the Southern Carpathians and is part of the historical region of Transylvania.
The city is notable for being the regional capital of the Transylvanian Saxons of the Burzenland administrative area in the past, and a large commercial hub on the trade roads between East and West. It is also the birthplace of the national anthem of Romania.Fabian Gottlieb von Bellingshausen
Fabian Gottlieb Thaddeus von Bellingshausen (Russian: Фадде́й Фадде́евич Беллинсга́узен, tr. Faddéy Faddéevich Bellinsgáuzen; 20 September [O.S. 9 September] 1778 – 25 January [O.S. 13 January] 1852), a Baltic German naval officer in the Imperial Russian Navy, cartographer and explorer, who ultimately rose to the rank of admiral. He participated in the First Russian circumnavigation of the globe and subsequently became a leader of another circumnavigation expedition that discovered the continent of Antarctica.
Bellingshausen started his service in the Russian Baltic Fleet, and after distinguishing himself joined the First Russian circumnavigation of the Earth in 1803–1806, serving on the merchant ship Nadezhda under the captaincy of Adam Johann von Krusenstern. After the journey he published a collection of maps of the newly explored areas and islands of the Pacific Ocean. Subsequently, he commanded several ships of the Baltic and Black Sea Fleets.
As a prominent cartographer, Bellingshausen was appointed to command the Russian circumnavigation of the globe in 1819–1821, intended to explore the Southern Ocean and to find land in the proximity of the South Pole. Mikhail Lazarev prepared the expedition and was made Bellingshausen's second-in-command and the captain of the sloop Mirny, while Bellingshausen himself commanded the sloop Vostok. During this expedition Bellingshausen and Lazarev became the first explorers to see the land of Antarctica on 27 January 1820 (New Style). They circumnavigated the continent twice and never lost each other from view. Thus they disproved Captain Cook's assertion that it was impossible to find land in the southern ice-fields. The expedition discovered and named Peter I Island, Zavodovski, Leskov and Visokoi Islands, the Antarctic Peninsula and Alexander Island (Alexander Coast), and made other discoveries in the tropical waters of the Pacific.
Made counter admiral on his return, Bellingshausen participated in the Russo-Turkish War of 1828–1829. Promoted to vice-admiral, he again served in the Baltic Fleet in 1830s, and from 1839 he was the military governor of Kronstadt, where he died. In 1831 he published the book on his Antarctic travels, called Double Investigation of the Southern Polar Ocean and the Voyage Around the World (Двукратные изыскания в южнополярном океане и плавание вокруг света). Russians remember him as one of their greatest admirals and explorers. Multiple geographical features and locations in the Antarctic, named in honor of Bellingshausen, commemorate his role in the exploration of the southern polar region.Fyodor Raskolnikov
Fyodor Fyodorovich Raskolnikov (Russian: Фёдор Фёдорович Раскольников; (28 January 1892, Saint Petersburg, Russia – 12 September 1939, Nice, France), real name Fyodor Ilyin (Russian: Фёдор Ильин), was an Old Bolshevik, participant in the October Revolution, commander of Red fleets on the Caspian and the Baltic during the Russian Civil War, and later a Soviet diplomat.John Kronstadt
John Arnold Kronstadt (born March 5, 1951) is a United States District Judge of the United States District Court for the Central District of California.John of Kronstadt
John of Kronstadt (Russian: Иоанн Кронштадтский) (31 October [O.S. 19 October] 1829–2 January [O.S. 20 December 1908] 1909) was a Russian Orthodox archpriest and a member of the Synod of the Russian Orthodox Church. He was known for his mass common confessions, numerous miracles and charitable work, as well as for his monarchist, chauvinistic, antisemitic and anticommunist views.John is a saint of the Eastern Orthodox Church and, as such, is known with the epithet "Righteous".Kotlin Island
Kotlin (Котлин) (or Kettle), is a Russian island, located near the head of the Gulf of Finland, 32 kilometres (20 mi) west of Saint Petersburg in the Baltic Sea. Kotlin separates the Neva Bay from the rest of the gulf. The fortified town of Kronstadt is located on the island. The island serves as a gateway to Saint Petersburg and as such has been the site of several military engagements.Kronstadt Marine Plant
The Kronstadt Marine Plant (Russian: Кронштадтский морской завод), originally established 16 March [O.S. 4 March] 1858 as 'Parokhodnyi mekhanicheskii z-d goroda Kronshtadta' (Russian: Пароходный завод), is a shipbuilding and repair center. It became the main repair center for the Baltic Fleet around 1900. By 1914 there were two dry docks, but no building slips. Operational 1917–1920; one of three military plants in the 1930s that produced munitions and torpedoes; arms parts and munitions during wartime.
Currently part of the United Shipbuilding Corporation.Kronstadt Naval Cathedral
The Naval cathedral of Saint Nicholas in Kronstadt (Russian: Морской Никольский собор, Morskoj Nikol'skij sobor) is a Russian Orthodox cathedral built in 1903–1913 as the main church of the Russian Navy and dedicated to all fallen seamen. The cathedral was closed in 1929, was converted to a cinema, a House of Officers (1939) and a museum of the Navy (1980).
The Russian Orthodox Church reinstalled the cross on the main dome in 2002 and served the first Divine Liturgy in the cathedral in 2005. In 2013, the Patriarch of Russia, with Prime Minister Dmitriy Medvedev and his spouse attending, conducted the ceremony of grand reconsecration in the now fully restored cathedral.Kronstadt rebellion
The Kronstadt rebellion (Russian: Кронштадтское восстание, tr. Kronshtadtskoye vosstaniye) was a major unsuccessful uprising against the Bolsheviks in March 1921, during the later years of the Russian Civil War. Led by Stepan Petrichenko and consisting of Russian sailors, soldiers, and civilians, the rebellion was one of the reasons for Vladimir Lenin's and the Communist Party's decision to loosen its control of the Russian economy by implementing the New Economic Policy (NEP).The rebellion originated in Kronstadt, a naval fortress on Kotlin Island in the Gulf of Finland that served as the base of the Russian Baltic Fleet and as a guardpost for the approaches to Petrograd, 55 kilometres (34 mi) away. The rebellion was crushed by the Red Army after a 12-day military campaign, resulting in several thousand deaths.
According to Lenin, the crisis was the most critical the regime had yet faced, "undoubtedly more dangerous than Denikin, Yudenich, and Kolchak combined."Left-wing uprisings against the Bolsheviks
The left-wing uprisings against the Bolsheviks were a series of rebellions, uprisings, and revolts against the Bolsheviks by oppositional left-wing organizations and groups that started soon after the October Revolution, continued through the years of the Russian Civil War, and lasted into the first years of Bolshevik reign of the Soviet Union. They were led or supported by left-wing groups such as some factions of the Socialist Revolutionary Party, Left Socialist-Revolutionaries, Mensheviks, and anarchists. Generally, the uprisings began in 1918 because of the Bolshevik siege and cooptation of Soviet Democracy, the signing of the Treaty of Brest-Litvosk which many saw as giving huge concessions to the Central Powers, and opposition to Bolshevik socioeconomic policy. The Bolsheviks grew increasingly hard-line during the decisive and brutal years following the October Revolution, and would suppress any socialist opposition whilst also becoming increasingly hostile to inner-party opposition. These rebellions and insurrections occurred mostly during and after the Russian Civil War, until approximately 1924.
The Bolsheviks were being assaulted by forces from the reactionary wing of Romanov monarchists, reformist Social Democrats, former Imperial Army officers and soldiers in the anti-communist White Armies along with several foreign nations sending in interventionist forces, aid and supplies for the White Armies. Despite this, Vladimir Lenin regarded the left-wing opposition as the most threatening the Bolshevik regime faced. Lenin had for example, called the Kronstadt Rebellion one of the most dangerous situations the regime had faced "undoubtedly more dangerous than Denikin, Yudenich, and Kolchak combined." The authority the Bolsheviks commanded, such as the Cheka and other exertions of control and supremacy were primarily used against left-wing oppositionists rather than the reactionary counter-revolution.Metres above the Adriatic
Metres above the Adriatic (Italian: Metri sopra l'Adriatico, German: Meter über Adria, Croatian: Metara iznad Jadrana) is the vertical datum used in Austria, in the former Yugoslavian states of Slovenia, Croatia, Bosnia-Hercegovina, Serbia, Montenegro, Macedonia, Kosovo, as well as in Albania to measure elevation, referring to the average water level of the Adriatic Sea at the Sartorio mole in the Port of Trieste.Neva Bay
The Neva Bay (Russian: Не́вская губа́, Névskaya Gubá), also known as the Gulf of Kronstadt, is the easternmost part of the Gulf of Finland between Kotlin Island and the Neva River estuary where Saint Petersburg city centre is located. It has a surface area of 329 km2 (127 sq mi). The entire bay has been separated from the Gulf of Finland by the 25 km long Saint Petersburg Dam. The area of water separated by the dam is 380 km2 (150 sq mi). The entire coastline is designated part of St. Petersburg rather than of Leningrad Oblast.
The bay is also informally known as "the Marquis' Puddle" after Jean Baptiste, marquis de Traversay, the Russian naval minister who regarded the shallow waters of the bay as an ideal place for holding naval exercises. The Saint Petersburg Dam separates the bay from the Baltic Sea.Nikolai Mukho
Nikolai Antonovich Mukho (Russian: Никола́й Анто́нович Мухо́; December 6, 1913, Kronstadt, Saint Petersburg Governorate, Russian Empire – August 6, 1986, Leningrad, USSR) was a Soviet, Russian painter, lived and worked in Leningrad, regarded as one of representatives of the Leningrad school of painting, most famous for his portrait painting.Paul Avrich
Paul Avrich (1931–2006) was a historian of the 19th and early 20th century anarchist movement in Russia and the United States. He taught at Queens College, City University of New York, for his entire career, from 1961 to his retirement as distinguished professor of history in 1999. He wrote ten books, mostly about anarchism, including topics such as the 1886 Haymarket Riot, 1921 Sacco and Vanzetti case, 1921 Kronstadt naval base rebellion, and an oral history of the movement. As an ally of the movement's major figures, he sought to challenge the portrayal of anarchists as amoral and violent, and collected papers from these figures that he donated as a 20,000-item collection to the Library of Congress.Peterhof Palace
The Peterhof Palace (Russian: Петерго́ф, IPA: [pʲɪtʲɪrˈɡof], German for Peter's Court) is a series of palaces and gardens located in Petergof, Saint Petersburg, Russia, commissioned by Peter the Great as a direct response to the Palace of Versailles by Louis XIV of France. Originally intended in 1709 for country habitation, Peter the Great sought to expand the property as a result of his visit to the French royal court in 1717, inspiring the nickname used by tourists "The Russian Versailles". In the period between 1714 and 1728, the architecture was designed by Domenico Trezzini, and the style he employed became the foundation for the Petrine Baroque style favored throughout Saint Petersburg. Also in 1714, Jean-Baptiste Alexandre Le Blond designed the gardens, likely chosen due to his previous collaborations with Versailles landscaper André Le Nôtre. Francesco Bartolomeo Rastrelli completed an expansion from 1747 to 1756 for Elizabeth of Russia. The palace-ensemble along with the city center is recognized as a UNESCO World Heritage Site.Pyotr Kapitsa
Pyotr Leonidovich Kapitsa or Peter Kapitza (Russian: Пётр Леони́дович Капи́ца, Romanian: Petre Capiţa (8 July [O.S. 26 June] 1894 – 8 April 1984) was a leading Soviet physicist and Nobel laureate, best known for his work in low-temperature physics.Pyotr Pakhtusov
Pyotr Kuzmich Pakhtusov (Russian: Петр Кузьмич Пахтусов) (1800 in Kronstadt – November 19, 1835 in Arkhangelsk) was a Russian surveyor and Arctic explorer. He is credited with the first thorough survey of Novaya Zemlya.
Between 1832 and 1835 Pakhtusov undertook two exploratory journeys to Novaya Zemlya. He wintered on the island on the two occasions and took detailed meteorological observations.
Pakhtusov carefully surveyed the southern and eastern parts of Novaya Zemlya along with fellow explorer and cartographer Avgust Tsivolko during the last two years of the expedition. Thanks to their work the first reliable maps of Novaya Zemlya's southern shores and part of the northern island's coastline, were published.
A small island in the eastern shore of Novaya Zemlya and a group of islands in the Nordenskiöld Archipelago are named after Pyotr Kuzmich Pakhtusov.
His feat as a scientist and researcher was immortalized in 1886. Colleagues of Pakhtusov and expedition members had initiated the creation of this monument in Kronstadt.Saint Petersburg Dam
The Saint Petersburg Flood Prevention Facility Complex (Russian: Ко́мплекс защи́тных сооруже́ний Санкт-Петербу́рга от наводне́ний, tr. kómpleks zashchítnykh sooruzhéniy Sankt-Peterbúrga ot navodnéniy), unofficially the Saint Petersburg Dam, is a 25 km (16 mi) complex of dams for flood control near Saint Petersburg, Russia. The dam extends from Lomonosov northward to Kotlin Island (and the city of Kronstadt), then turns east toward Cape Lisiy Nos near Sestroretsk.
The complex is intended to protect Saint Petersburg from storm surges by separating the Neva Bay from the rest of the Gulf of Finland. Historically, the storm surges from the gulf had caused over 300 floods in the city, several of which had a massive devastating effect. The dam has the capability to protect the city from water rising up to 5 m (16 ft). Its first use to hold back the incoming Baltic water into Neva bay took place 28 November 2011 and had resulted in decrease of water rise to 1.3 masl, that is below flood level equal to 1.6 masl according to Baltic system of coordinates, which prevented the 309th flood in the history of the city and saved some 1.3 billion roubles of possible damages.The construction of the flood prevention complex started in 1978 and became one of the longest construction projects in Russia. After a protracted halt in the 1990s and early 2000s, construction was resumed in 2005 due to the intervention of Russia's President Vladimir Putin, a native of Saint Petersburg. Putin finally inaugurated the finished complex in 2011, when all the facilities at the southern part of the dam were completed, along with the 1.2 km (0.75 mi) long underwater roadway tunnel below the main southern lock, the longest undersea tunnel in Russia.Over 30 water purification installations are placed around the dam, a part of a larger program to clean the water in the Neva Bay. The dam tunnel is also the last completed part of the Saint Petersburg Ring Road. The northern and southern parts of the dam act like two giant bridges and provide an easy access from mainland to Kotlin Island and Kronstadt.Stepan Maximovich Petrichenko
Stepan Maximovich Petrichenko (Russian: Степа́н Макси́мович Петриче́нко; 1892 – June 2, 1947) was a Russian revolutionary, an anarcho-syndicalist politician, the head of the 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.