R-29RMU2 Layner

Last updated
R-29RMU2.1 Layner
Place of originRussia
Service history
In service2014–present
Used by Russian Navy
Production history
Designer Makeyev Rocket Design Bureau
Manufacturer Krasnoyarsk Machine-Building Plant
Mass40 tons
Length15 m
Diameter1.9 m
Warhead4 × 500kt or 12 × 100kt multiple thermonuclear warheads [1]

EngineThree-stage liquid-propellant rocket
8,300-12,000 km[ citation needed ]
Astroinertial with GLONASS

The R-29RMU2.1 Layner [2] (Russian : Р-29РМУ2 "Лайнер" meaning Liner) is a Russian liquid-fuelled submarine-launched ballistic missile (SLBM) and the newest member of the R-29 missile family, developed by the Makeyev Rocket Design Bureau and produced by the Krasnoyarsk Machine-Building Plant. [3] Derived from the R-29RMU Sineva SLBM, the Layner can carry twelve nuclear warheads, three times as many as Sineva. It was expected to enter service with the Russian Navy's Delta IV class submarines after a successful test programme that spanned from May to September 2011. The Russian Navy confirmed in 2014 that the system was now in use. [4]


History and design

On 9 August 2011, the Russian Ministry of Defense disclosed the details of the Layner SLBM, whose first launch occurred on 20 May earlier that year. [3] [5] The authorities originally claimed the launch to be of a Sineva missile, but on 23 May 2011 it was revealed that the missile fired was actually the Layner. [6] [7] The successful firing, aimed at the Kura Test Range, was conducted from the submarine K-84 Ekaterinburg. [3] [8]

K-114 Tula, one of the seven Delta IV class submarines of the Russian Navy, launched the second Layner in September 2011. RIAN archive 895550 Drills for nuclear submarine crews at training center in Murmansk Region.jpg
K-114 Tula, one of the seven Delta IV class submarines of the Russian Navy, launched the second Layner in September 2011.

The second launch of the Layner missile took place on 29 September 2011 from the submarine K-114 Tula in the Barents Sea aimed at the Kura Test Range. [9] [10] Following the second successful Layner test, the Russian Navy decided to accept the missile into active service to augment the RSM-56 Bulava missile and improve the future viability of the Delta IV class submarines until at least 2030. [11] [12] Development work on the missile was completed by late February 2012. [13] Missile was recommended by the State Commission for adoption as of December 2012. [14] Missile weapons complex D-29RMU2.1 with missile R-29RMU2.1 accepted for service by decree of the President of the Russian Federation in January 2014. [15]

The Layner missile is a highly advanced derivative of the three-stage liquid-propelled R-29RMU Sineva SLBM, which was accepted into service in 2007. [3] While many technical details are not disclosed, it is known that the missile is capable of carrying up to twelve low-yield nuclear warheads called MIRVs capable of striking several targets individually.[ citation needed ] This is twice the number of warheads the solid-propellant RSM-56 Bulava SLBM can carry, and, unlike those of the Sineva SLBM, these warheads can be of a mixed set with various yields. [12] While it shares flight characteristics with the Sineva, the Layner is equipped with improved systems to overcome anti-ballistic missile shields. [16] The missile can carry twelve low-yield warheads without penetration aids, ten low-yield warheads with penetration aids, eight low-yield warheads with enhanced penetration aids, or four medium-yield warheads with penetration aids. [1]


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See also

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