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R-29RMU2.1 Layner

Submarine-launched intercontinental ballistic missile

R-29RMU2.1 Layner nuclear missile

The R-29RMU2.1 Layner is one of the deadliest Russian nuclear missiles

 
 
Country of origin Russia
Entered service 2014
Basing Submarine-launched
Missile
Missile length ~ 14.8 m
Missile diameter ~ 1.9 m
Launch weight ~ 40 t
Throw weight 2.8 t
Number of MIRVs 12 x 100 ~ 300 kT
Range (full load) 8 300 km
Range (reduced load) 12 000 km
CEP 350 m
Guidance Astro-inertial with GLONASS update

 

   The R-29RMU2.1 Layner is a recent Russian submarine-launched ballistic missile. It is an improved version of the previous R-29RMU2 Sineva. The R-29RMU2.1 Layner was first tested in 2012 and adopted in 2014. Currently it is one of the deadliest Russian nuclear missiles. It is carried by Delta IV class submarines. Previous R-29RMU2 Sineva missiles have reportedly been modified to this new standard.

   The Layner is a three-stage missile. It has a throw weight of 2 800 kg. It has a maximum range of 8 300 km with full load and 12 000 km with reduced load. Each missile can carry 12 low-yield warheads. Most likely that these have 100-300 kT capacity. Unusual feature of this missile is that warheads can be of a mixed set with various yields. This feature was not present of the previous R-29RMU2 Sineva missile. The new missile is equipped with improved systems that allow to overcome anti-ballistic missile shields. For this role it carries array of decoys. Furthermore it can be configured to can carry less nuclear warheads, but more decoys. It looks like the warheads are capable of in-flight maneuvering and re-targeting, in order to outmaneuver hostile air defenses.

   It looks like the Layner missile has an Astro-inertial guidance with Russian GLONASS satellite navigation system update. It has a CEP of around 350 m.

   This missile can be launched from a depth of up to 55 m, while the submarine is moving at a speed of 11-13 km/h (6-7 knots).

   Submarine basing of the ICBMs allow to survive the first strike once the country has been attacked. However the Russian Delta IV submarines are not as stealthy as the US or British ballistic missiles. Still though these have a higher chances of surviving than stationary silo-based systems. Furthermore these missiles have sufficient range to be fired straight from the pier, even without need for the submarines to leave their well protected bases.

   As of 2016 a total of 6 Delta IV class submarines, equipped with ballistic missiles, are in service with the Russian Navy. It is planned that the Delta IV class submarines will be operational until at least 2030.

 
R-29RMU2.1 Layner nuclear missile

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R-29RMU2.1 Layner nuclear missile

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R-29RMU2.1 Layner nuclear missile

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R-29RMU2.1 Layner nuclear missile

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