CIWS Close-In Weapon System 3D model

A close-in weapon system (CIWS /ˈsiːwɪz/ SEE-wiz)[1] is a point-defense weapon system for detecting and destroying short-range incoming missiles and enemy aircraft which have penetrated the outer defenses, typically mounted on a naval ship. Nearly all classes of larger modern warships are equipped with some kind of CIWS device.

There are two types of CIWS systems. A gun-based CIWS usually consists of a combination of radars, computers, and rapid-firing multiple-barrel rotary cannons placed on a rotating turret. Missile-based CIWSs use either infra-red, passive radar/ESM, or semi-active radar terminal guidance to guide missiles to the targeted enemy aircraft or other threats. In some cases, CIWS are used on land to protect military bases. In this case, the CIWS can also protect the base from shell and rocket fire. Gun systems

Phalanx CIWS and Bofors 40mm L70 Gun aboard ROCN Di Hua (PFG-1206) A gun-based CIWS usually consists of a combination of radars, computers and rotary or revolver cannon placed on a rotating, automatically aimed gun mount. Examples of gun-based CIWS products in operation are:

AK-630 - 30×165mm caliber Aselsan GOKDENIZ - 35×228mm DARDO - 40×365mmR Denel 35mm Dual Purpose Gun - 35×228mm Goalkeeper CIWS - 30×173mm