Group : Anti-Ship Missiles
Status : Active
Also Known As : 4K-80, P-500, SS-N-12 Sandbox
Origin : Russia
Contractor : NPK Tekhmash
Initial Operational Capability (IOC) : 1973
Total Production : ?

P-500 Bazalt is a supersonic, long-range, anti-ship cruise missile developed by the Soviet Union to engage NATO surface ships. It is powered by a liquid fuel motor and has an effective range of 550 kilometers at Mach 2+ carrying a 1,000 kg warhead. Alternatively, it could replace its conventional payload by a nuclear warhead of about 350 kilotons.

Due to its weight of 5 tons and length of more than 11 meters, Bazalt long-range missile was provided to large Soviet surface ships such as cruisers and aircraft carriers. NATO name for this weapon is the SS-N-12 Sandbox. These missiles were replaced by the P-1000 Vulkan in the early 2000s on Project 1164 cruisers.