Phalanx CIWS by phinnyx

The Phalanx CIWS (pronounced "sea-wiz") is a close-in weapon system for defense against incoming threats such as small boats, surface torpedoes, anti-ship missiles, fixed wing aircraft and helicopters. It was designed and manufactured by the General Dynamics Corporation, Pomona Division, later a part of Raytheon. Consisting of a radar-guided 20 mm (0. 8 in) Vulcan cannon mounted on a swiveling base, the Phalanx has been used by the United States Navy and the naval forces of 15 other countries. The US Navy deploys it on every class of surface combat ship, except the Zumwalt-class destroyer and San Antonio-class amphibious transport dock. Other users include the British Royal Navy, the Royal Australian Navy, the Royal New Zealand Navy, the Royal Canadian Navy and the US Coast Guard (aboard its Hamilton- and Legend-class cutters).