Russian submarine Yury Dolgorukiy
2007 Borei-class submarine
Yury Dolgorukiy (K-535; Russian: К-535 Юрий Долгорукий) is a Borei-class nuclear-powered ballistic missile submarine of the Russian Navy, and the lead vessel of the class. Named after the founder of Moscow, Yuri Dolgorukiy, the vessel was laid down on 2 November 1996 and was first planned to enter service in 2001. However, project for the R-39M SLBM that the Borei class was supposed to carry was abandoned after several failed tests, and the submarine was redesigned for the new RSM-56 Bulava SLBM. The RSM-56 Bulava is smaller than the original R-39M, and in the 2007 START treaty data exchange it was reported that all Borei-class submarines would be equipped with 16 missiles instead of 12, as originally intended. Yury Dolgorukiy was commissioned on 10 January 2013, making it the first new strategic submarine to join the Northern Fleet since 1992.
History
On 15 April 2007, the submarine was rolled out of the construction hall into a launch dock in Severodvinsk, when the vessel was about 82% complete. The Russian government allocated nearly 5 billion rubles, or 40% of the Navy's 2007 weapons budget, for the completion of the submarine.
There was some speculation that Yuriy Dolgorukiy would be rushed through the rest of the production and testing phases in order to be ready for the 2008 Russian presidential election. Much of the vessel's equipment remained uninstalled and untested, a process that would normally take over a year to complete.
On 13 February 2008, Yuriy Dolgorukiy was finally launched from the floating dock in Severodvinsk where the final outfitting took place. The submarine's reactor was first activated on 21 November 2008, and the submarine began its sea trials on 19 June 2009.
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