A cruise missile is a guided missile used against terrestrial targets that remains in the atmosphere and flies the major portion of its flight path at approximately constant speed
World's most deadliest cruise missiles
The Russian 3M-54 is developed by the Novator Design Bureau. It is designed to destroy submarine and surface vessels and also engage static/slow-moving targets, whose coordinates are known in advance, even if these targets are protected by active defences and electronic countermeasures.
The C-802 land attack and anti-ship cruise missile [Western designation SACCADE], is an improved version of the C-801 which employs a small turbojet engine in place of the original solid rocket engine. Its guidance equipment has strong anti-jamming capability, and targets ships that have a very low success rate in intercepting the missile.
It can be launched from airplanes, ships, submarines and land-based vehicles, and is considered along with the US "Harpoon" as among the best anti-ship missiles in the present day.
The P-800 Oniks is one of the most deadly anti-ship missiles today. It has an effective guidance system. Its "fire-and-forget" system allows its launch platform to run to safety after launching the missile.
The P-270 Moskit is a Russian supersonic ramjet-powered cruise missile. The Moskit is one of the missiles known by the NATO codename SS-N-22 Sunburn. It reaches a speed of Mach 3 at high altitude and Mach 2.2 at low-altitude.