P-800 Oniks

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Yakhont/Onyx missile

Type	anti-ship missile
Production history
Manufacturer	NPO Mashinostroyeniya
Specifications
Weight	3000 kg
Length	8.9 m

Warhead	250 kg

Engine	ramjet using kerosene liquid fuel
Operational range	120 to 300 km depending on altitude
Flight altitude	5-15 meters above sea level or higher
Speed	Mach 2.5
Guidance system	active-passive, radar seeker head
Launch platform	naval ships, fixed-wing aircraft

The P-800 Oniks (Russian: П-800 Оникс, alternatively termed Yakhont (Яхонт) for export markets; "Oniks" is onyx, and "Yakhont" is ruby or sapphire in English) is a Russian (former Soviet) supersonic anti-ship cruise missile developed by NPO Mashinostroyeniya as a ramjet version of P-80 Zubr. Its GRAU designation is 3M55. Development reportedly started in 1983, and by 2001 allowed the launch of the missile from land, sea, air and submarine. The missile has the NATO reporting codename SS-N-26. It is reportedly a replacement for the P-270 Moskit, but possibly also for the P-700 Granit. The P-800 was reportedly used as the basis for the joint Russian-Indian supersonic missile the PJ-10 BrahMos.