P-500 Bazalt

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P-500 Bazalt / P-1000 Vulkan
(NATO reporting name: SS-N-12 'Sandbox')
P-500 bazalt sketch.svg
P-500 Bazalt
TypeCruise missile
Surface-to-surface missile
Submarine-launched cruise missile
Place of origin Soviet Union
Service history
In serviceSince 1975
Used bySoviet Union, Russia
Production history
Designer OKB-52/NPO Mashinostroyeniya Chelomey
ManufacturerP.A. Strela
Produced1970–1987 (P-500) 1985–1992 (P-1000) [1]
Mass4,800 kg (10,600 lb)
Length11.7 meters
Diameter0.88 meters
Warhead High explosive or nuclear
Warhead weight1,000 kg (2,205 lb) (P-500)
Blast yield350  kt

Engine turbojet
Wingspan2.6 meters
550 km (300 nmi) (P-500)
Flight altitude50–5,000 meters
Maximum speed Mach 2.5
Semi-active radar homing, terminal active radar homing
Echo II & Juliett-class submarines
Kiev-class aircraft carrier & Slava-class cruiser

The P-500 Bazalt (Russian : П-500 «Базальт»; English: basalt ) is a turbojet-powered, supersonic cruise missile used by the Soviet and Russian navies. Its GRAU designation is 4K80 [2] and its NATO reporting name is SS-N-12 Sandbox, its modern version being the P-1000 Vulkan AShM SLCM.



Eight SS-N-12 launchers on the aircraft carrier Kiev SS-N-12 missile launch tubes on the Kiev (1976).JPEG
Eight SS-N-12 launchers on the aircraft carrier Kiev
Fourteen Echo II submarines were upgraded to carry the P-500, and three of those went on to receive the P-1000 Vulkan. Submarine Echo II class.jpg
Fourteen Echo II submarines were upgraded to carry the P-500, and three of those went on to receive the P-1000 Vulkan.

Developed by OKB-52 MAP (later NPO Mashinostroyeniye), it entered service to replace the SS-N-3 Shaddock. The P-500 Bazalt was first deployed in 1975 on the Soviet aircraft carrier Kiev, and was later added to both the Echo II class submarine and the Juliett class submarine. A version of the P-500 Bazalt with improved guidance and engines is used on the Slava class cruiser. The sixteen launchers dominate the decks of the class.


The P-500 Bazalt has a 550 km range and a payload of 1,000 kg, which allows it to carry a 350 kt nuclear or a 950 kg semi-armor-piercing high-explosive warhead. The P-500 Bazalt uses active radar homing for terminal guidance, and can receive mid-course correction from the Tupolev Tu-95RTs Bear D, the Kamov Ka-25K Hormone B and the Kamov Ka-31.

The missiles were intended to be used in salvos; a submarine could launch eight in rapid succession, maintaining control of each through a separate datalink. In flight the group could co-ordinate their actions; one would fly to a higher altitude and use its active radar to search for targets, forwarding this data to the other missiles which remained at low altitude. The missiles were programmed so that half of a salvo would head for a carrier target, with the rest dividing between other ships. If the high-flying missile was shot down, another from the salvo would automatically pop up to take its place. All of the missiles would switch to active radar for the terminal phase of the attack. [3]

P-1000 Vulkan

Eight pairs of P-500 canisters are a distinctive feature of Slava class cruisers; the Varyag (pictured) have been upgraded to the P-1000 Vulkan. US Navy 100625-G-7265M-396 Russian Sailors man the rails as Russian navy missile-cruiser Varyag departs San Francisco Bay.jpg
Eight pairs of P-500 canisters are a distinctive feature of Slava class cruisers; the Varyag (pictured) have been upgraded to the P-1000 Vulkan.
P-1000 Vulkan P-1000-Vulkan sketch.svg
P-1000 Vulkan

An improved version of the P-500 was installed on three Echo II submarines towards the end of the Cold War. [4] The P-1000 Vulkan (GRAU 3M70) presumably has the same firing range and maximum speed with the P-500 Bazalt (range 800 km [5] ). The missile weight was increased by 1–2 tons. The missile has a turbojet engine and a starting powder accelerator. High-altitude flight regimes are presumably the same as that of P-500. [6]

The P-1000 was ordered on 15 May 1979 [4] from NPO Mashinostroyeniya Chelomey; [4] it first flew in July 1982 [4] and was accepted for service on 18 December 1987. [4] It was installed on three Echo II submarines of the Northern Fleet between 1987 and 1993; the conversion of two units of the Pacific Fleet, the K-10 and K-34, was abandoned due to lack of funds. [4] Of the submarines that did receive the P-1000, the K-1 was decommissioned after a reactor accident in 1989, the K-35 was stricken in 1993 and the K-22 in 1995. [4] The P-1000 has been installed on the Slava class cruiser Varyag, [7] and some sources report P-1000 missiles on her sister ship Moskva. [8]

The P-700 Granit (NATO reporting name SS-N-19 Shipwreck) was partially based on the SS-N-12, but with a significantly modified airframe. The avionics, however, are very similar.



Flag of Russia.svg  Russia


Flag of the Soviet Union.svg  Soviet Union

See also

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  2. (in Russian) P-500 Bazalt Archived 27 February 2009 at the Wayback Machine
  3. Soviet-Russian Naval Cruise Missiles
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  8. "US Navy's presence counters Russia's Black Sea fleet". Georgia Today (566). 17 June 2011. Archived from the original on 2 January 2012.