You can help expand this article with text translated from the corresponding article in Russian. (May 2023) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Russian Wikipedia article at [[:ru:Р-29РМ]]; see its history for attribution. You may also add the template {{Translated|ru|Р-29РМ}} to the talk page. For more guidance, see Wikipedia:Translation.

The R-29RM^[4] (Russian: Р-29РМ, 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.^[5] 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).^[6] They were replaced with the newer R-29RMU2 Sineva and later with the enhanced variant R-29RMU2.1 Layner.

Development of the R-29RM started in 1979 at the Makeyev Rocket Design Bureau. The navy accepted the armament in 1986 and subsequently installed the D-9RM launch system consisting of a cluster of 16 R-29RM on board the nuclear-propelled Project 667BDRM submarines.^[3]

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 the 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.^[7]

Several R-29RM were retrofitted as Shtil' carrier rockets to be launched by Delta-class submarines, the submarines being mobile can send a payload directly into a heliosynchronous 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.

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.^{[8][failed verification]}

 Russia

• Russian Navy (1992-2010)

 Soviet Union

• Soviet Navy (1986-1991)

• 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
• Pukguksong-1
• R-39 Rif
• R-39M

• CSIS Missile Threat SS-N-23
• IDB RSM-54 (R-29RM) 3M37, SS-N-23 "Skiff" (Russian) Archived 19 July 2011 at the Wayback Machine
• Russian nuclear delivery systems at the Center for Defense Information

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