View source for RPK-2 Vyuga

{{refimprove|date=February 2011}}
{{Infobox weapon
|name= RPK-2 Vyuga <br><small>([[NATO reporting name]]: SS-N-15 'Starfish'</small>)
| image= Operation diagram of an anti-submarine missile system.svg
| image_size = 300
|caption= Mission profile
|origin= Soviet Union
|type= Anti-submarine/ship missile
<!-- Type selection -->
|is_missile= yes
<!-- Service history -->
|service= 1969&ndash;current
|used_by= Russia
|wars=
<!-- Production history -->
|designer=
|design_date= 1960s
|manufacturer=
|unit_cost=
|production_date=
|number=
|variants=
<!-- General specifications -->
|spec_label=
|weight=
|length=
|part_length=
|width=
|height=
|diameter=
|crew=
<!-- Ranged weapon specifications -->
|cartridge=
|caliber=
|barrels=
|action=
|rate=
|speed= Mach 0.9
|vehicle_range={{convert|35-45|km|mi|abbr=on}}
|velocity=
|range=
|max_range=
|feed=
|sights=
<!-- Explosive specifications -->
|filling= ≥5 kt thermonuclear warhead or a Type 40 torpedo
|filling_weight= 2445 kg
|detonation=
|yield=
<!-- missiles only -->
|wingspan=
|propellant= solid fuel rocket
|ceiling=
|altitude=
|depth= 
|guidance= [[Inertial guidance]]
|accuracy=
|launch_platform= ''[[Akula-class submarine|Akula]]'', [[Oscar-class submarine|Oscar]], [[Typhoon-class submarine|Typhoon]], [[Alfa-class submarine|Alfa]], [[Delta-class submarine|Delta]], [[Kilo-class submarine|Kilo]], [[Borei-class submarine|Borei]]
|transport=
}}

The '''RPK-2 Vyuga''' ({{Langx|ru|РПК-2 Вьюга}}, ''[[blizzard]]''; [[NATO reporting name]]: '''SS-N-15 Starfish'''), also designated as '''81R''', is a [[Soviet Union|Soviet]] surface- or submarine-launched, nuclear-armed [[anti-submarine missile]] system, launched exclusively through {{convert|533|mm|adj=on}} [[torpedo tube]]s. The system was designed in [[Yekaterinburg|Sverdlovsk]], [[Russian SFSR]] in the 1960s.

Analogous to the [[SUBROC]] missile previously used by the [[US Navy]], it is designed to be fired from a 533&nbsp;mm torpedo tube. It is boosted by a choice of mechanisms depending on model before clearing the water, firing a [[solid propellant#Solid propellant rockets and projectiles|solid fuel]] rocket and delivering its payload up to {{convert|45|km}} away. The payload ranges from a simple [[depth charge]] to a 200 kt [[nuclear depth bomb]].

==Design==
The RPK-2 uses a 82R [[torpedo]] or 90R nuclear depth charge in the 533&nbsp;mm version, and a 83R torpedo carrying{{Clarify|date=September 2010}} or 86R nuclear depth charge in 650&nbsp;mm version.

Both submarine- and surface-launched versions exist. The surface-launched versions are used by the {{sclass|Slava|cruiser|5}}, {{sclass|Kirov|battlecruiser|5}}, {{sclass|Neustrashimy|frigate|5}} and {{sclass|Udaloy|destroyer|5}} classes. The submarine-launched versions are used by the {{sclass|Akula|submarine|5}}, {{sclass2|Oscar|submarine|5}}, {{sclass2|Typhoon|submarine|5}}, {{sclass2|Delta|submarine|5}}, {{sclass2|Kilo|submarine|5}}, and {{sclass2|Borei|submarine|5}} classes. However, the munition package used in either is identical and hence the ship-launched version is launched into the water and submerges before firing its engines.

==Operators==
;{{RUS}}
;{{USSR}}

==See also==
* [[Metel Anti-Ship Complex]], predecessor
* [[RPK-6_Vodopad/RPK-7_Veter|RPK-6 Vodopad]] and [[RPK-6_Vodopad/RPK-7_Veter|RPK-7 Veter]], successor
* [[RPK-1 Vikhr|82R Vikhr]] (SUW-N-1)
* [[SMART (missile)|SMART]]

==External links==
* [https://web.archive.org/web/20080724004019/http://www.astronautix.com/lvs/81r.htm Encyclopedia Astronautica]
* [https://fas.org/man/dod-101/sys/missile/row/ss-n-15.htm SS-N-15 Starfish (RPK-2 Viyoga)] {{Webarchive|url=https://web.archive.org/web/20151126101654/https://fas.org/man/dod-101/sys/missile/row/ss-n-15.htm |date=2015-11-26 }}

{{Russian and Soviet missiles|SSM}}
{{Russian and Soviet military designation sequences}}

{{DEFAULTSORT:Rpk-2 Viyuga}}
[[Category:Cold War submarine-launched cruise missiles of the Soviet Union]]
[[Category:Anti-ship missiles of the Soviet Union|RPK-002]]
[[Category:Anti-submarine missiles of the Soviet Union]]
[[Category:Military equipment introduced in the 1960s]]
{{Missile-stub}}