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B-585 ''Sankt Peterburg'' ((ロシア語:Б-585 «Санкт-Петербург»); named after Saint Petersburg) is the lead boat of the of the Russian Navy. The Lada class is the fourth generation of diesel-electric submarines designed and constructed in the former Soviet Union and Russia to replace the . Construction of the boat started in December 1997, and she was launched in October 2004. After undergoing a series of sea trials, ''Sankt Peterburg'' was commissioned in May 2010. However, the Russian Navy decided not to accept the Lada class after it was discovered that the boat's propulsion and sonar systems were inadequate. After design corrections the submarine was accepted. In 2014, ''Sankt Peterburg'' joined the Northern Fleet. ==Background and construction== ''Sankt Peterburg'' is first boat of Rubin Design Bureau's Lada class, of which a total of eight were expected to be procured by the Russian Navy. A less capable version, the , is marketed for export. Designed during the 1990s, the Lada class is intended to be the successor to the larger Kilo class.〔 〕 The Kilo class is considered to be one of the quietest diesel classes in operations, giving rise to the nickname "Black Hole". Among the expected capabilities improvements of the Lada class over its predecessor were the incorporation of improved anechoic coating (to minimize sonar contact), extended cruise range, and the upgrade to newer weapons for anti-submarine and anti-ship operations.〔 Lada-class boats can also conduct reconnaissance and defend naval facilities and sea lanes. Amid a severe shortage of funds experienced during the 1990s following the dissolution of the Soviet Union, the keel of ''Sankt Peterburg'' was laid down on 26 December 1997, in Saint Petersburg by Admiralty Shipyard.〔 The company specialises in submarine construction, having built more than 300 boats,〔 including the and nuclear-powered submarines. By 2006, two more of ''Sankt Peterburg''s sister boats, ''Kronshtadt'' and ''Sevastopol'' had had their keels laid down. ''Sankt Peterburg'' was launched on 28 October 2004, to coincide with the 300th anniversary of Sankt Peterburg's founding, before undergoing several sea trials, to validate her systems, until 2009. As of 25 February 2008, ''Sankt Peterburg'' was part of the 13th Brigade of Ships Under Repair and Construction (military unit number 22875), Leningrad Naval Base.〔(Журнал «Власть» № 7(760) от 25.02.2008 ). Military Unit number is via warfare.ru, http://warfare.be/?catid=321&linkid=2225&title=western-military-district---osc-west. Retrieved 26 February 2012.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Russian submarine Sankt Peterburg (B-585)」の詳細全文を読む スポンサード リンク
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