CIWS

Military abbreviation · Weapon and Military Equipment

CIWS
Stands forClose-in weapon system
CategoriesMilitary

CIWS stands for Close-in weapon system, a weapon and military equipment abbreviation.

Ship-mounted automatic weapon that defends against missiles, aircraft, drones and small boats at short range. The US Navy's Phalanx uses a radar-guided 20mm Gatling gun firing thousands of rounds a minute.

Example: The destroyer's CIWS engaged the incoming drone moments before impact.

Usage notes

Pronounced "SEA-whiz." Sailors call the Phalanx "R2-D2" because of its white dome. Some ships also carry the Rolling Airframe Missile system for close-in defense. The Army adapted Phalanx as a land-based counter-rocket system called C-RAM.

More weapon and military equipment abbreviations

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  • BFV – Bradley Fighting Vehicle
  • BMD – Ballistic missile defense
  • BZO – Battle sight zero
  • CBU – Cluster bomb unit
  • CH – Cargo helicopter
  • DMR – Designated marksman rifle
  • DPICM – Dual-purpose improved conventional munition
  • EFP – Explosively formed penetrator
  • FMJ – Full metal jacket
  • FPV – First-person view drone
  • GBU – Guided bomb unit

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