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SS-N-23
Type	SLBM
Service history
In service	1986–2010
Used by	Soviet Navy Russian Navy
Production history
Designer	Makeyev Rocket Design Bureau
Manufacturer	Krasnoyarsk Machine-Building Plant
Specifications
Mass	40.3 tonnes
Length	14.8 metres
Diameter	1.9 m
Warhead	The payload (2800 kg) was capable of carrying ten 100 kT yield MIRV warheads, though only a four MIRV warhead version entered production.
Blast yield	200 kt each [1]
Engine	Three-stage liquid-propellant rocket
Operational range	8,300 kilometres (5,200 mi)
Guidance system	Astroinertial

The R-29RM Shtil^[2] (Russian: Штиль, lit. "Calmness", NATO reporting name SS-N-23 Skiff) was a liquid propellant, submarine-launched ballistic missile in use by the Russian Navy. It had the alternate Russian designations RSM-54 and GRAU index 3M27.^[3] It was designed to be launched from the Delta IV submarine, each of which is capable of carrying 16 missiles.

They were replaced with the newer R-29RMU Sineva and later with the enhanced variant R-29RMU2 Layner.

Operation Behemoth

On 6 August 1991 at 21:09 Novomoskovsk, under the command of Captain Second Rank Sergey Yegorov, became the world's only submarine to successfully launch an all-missile salvo, launching 16 R-29RM (RSM-54) ballistic missiles of total weight of almost 700 tons in 244 seconds (operation code name "Behemoth-2"). The first and the last missiles hit their targets; the remaining missiles were intentionally caused to self-destruct in flight.

Previously, the largest number of missiles launched from a submerged SSBN was four Trident II missiles.

Performance

The R-29RM carried four 100 kiloton warheads and had a range of about 8,500 kilometres (5,300 mi).^[4]

End of service

The last boat carrying R-29RM, K-51 Verkhoturye, went into refit to be rearmed with the newer R-29RMU Sineva on 23 August 2010.^[5]

Space Launch Vehicle

Several R-29RM were retrofitted as Shtill carrier rockets to be launched by Delta-class submarines, the submarines being mobile can send a payload directly into a heliosynchronic orbit, notably used by imaging satellites. Outside the confines of the Russian military, this capability has been used commercially to place three out of four microsatellites into a low earth orbit with one cancellation assigned to the Baikonur Cosmodrome for better financial terms.

Operators

Former operators

• Russian Navy


• Soviet Navy

See also

• R-29 Vysota


• R-29RMU Sineva


• R-29RMU2 Layner


• RSM-56 Bulava


• Kanyon


• UGM-133 Trident II


• M45 (missile)


• M51 (missile)


• JL-1


• JL-2


• K Missile family


• Pukkuksong-1


• R-39 Rif


• R-39M

References

External links

• CSIS Missile Threat SS-N-23


• IDB RSM-54 (R-29RM) 3M37, SS-N-23 "Skiff" (Russian)


• 
  Russian nuclear delivery systems at the Center for Defense Information
  

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