“Neptun cruise anti-ship missile is capable of striking warships with up to 5000 tons of water displacement at a distance of up to 280 km (the export version).
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The system consists of four anti-ship missiles, their launchers and a land mobile platform. The weight of each missile is 670 kg, and its fragmentation-explosive warheads weights 145 kg.
The Neptun is a subsonic coastal missile system with cruise missiles designed to engage enemy surface fighting ships and auxiliaries vessels both single and belonging to Task Forces.” (Defence-Blog)