Russian submarine Yury Dolgorukiy

Yury Dolgorukiy in October 2015
History
Russia
Name	Yury Dolgorukiy
Namesake	Yuriy Dolgorukiy
Builder	Sevmash
Laid down	2 November 1996
Launched	13 February 2008
Commissioned	10 January 2013
Status	In active service
General characteristics
Class and type	Borei-class submarine
Displacement	14,720 t (14,488 long tons) surfaced 24,000 t (23,621 long tons) submerged
Length	170 m (557 ft 9 in)
Beam	13.5 m (44 ft 3 in)
Draught	10 m (32 ft 10 in)
Propulsion	1 × OK-650B nuclear reactor (HEU <= 45%[1]) 1 × AEU steam turbine 1 shaft
Speed	25 knots (46 km/h; 29 mph)
Complement	130 officers and men
Armament	16 × RSM-56 Bulava SLBMs 6 × 21 in (533 mm) torpedo tubes RPK-2 Vyuga anti-submarine/ship missiles

K-535 Yuriy Dolgorukiy (Russian: АПЛ 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.