|Used by||Soviet Navy|
|Designer||Makeyev Rocket Design Bureau|
|Manufacturer||Krasnoyarsk Machine-Building Plant|
|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 |
|Engine||Three-stage liquid-propellant rocket|
|8,300 kilometres (5,200 mi)|
The R-29RM Shtil (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. It was designed to be launched from the Delta IV submarine, each of which is capable of carrying 16 missiles. The R-29RM could carry four 100 kiloton warheads and had a range of about 8,500 kilometres (5,300 mi). They were replaced with the newer R-29RMU2 Sineva and later with the enhanced variant R-29RMU2.1 Layner.
On 6 August 1991 at 21:09, K-407 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"). All the missile hit their designated targets at the Kura Missile Test Range in Kamchatka.
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.
End of service
- Russian Navy (1992-2010)
- Soviet Navy (1986-1991)
- R-29 Vysota
- R-29RMU Sineva
- R-29RMU2 Layner
- RSM-56 Bulava
- UGM-133 Trident II
- M45 (missile)
- M51 (missile)
- K Missile family
- R-39 Rif
- – Russian Strategic Nuclear Forces (rus)
- Aviation.ru – Missiles Archived 4 November 2008 at the Wayback Machine
- "R-29RM Shetal/Sineva (SS-N-23 'Skiff'/RSM-54/3M27) (Russian Federation), Offensive weapons". Janes.com.
- CSIS Missile Threat SS-N-23
- "Submarine-launched ballistic missiles". russianspaceweb.com. Retrieved 25 August 2019.
- "SSBN K-51 Verkhoturye arrived to Zvezdochka for repairs today". Rusnavy.com. 23 August 2010.