The Kashtan(Chestnut) Close-in weapon system (CIWS) is a modern naval air defence gun-missile system deployed by the Russian Navy.The combat modules are typically made up of two GSh-30k (AO-18K) six-barrelled 30 mm gatling guns, fed by a link-less feeding mechanism, and two SA-N-11 launchers equipped with 4 ready-to-fire missiles each and fed by a reloading system storing 32 missiles in ready-to-launch containers.
