Footage of multiple test firing of CIWS aboard various U.S. Navy ships. The Phalanx CIWS (pronounced sea-whiz) is primarily a close-in weapon system for defense against anti-ship missiles. It consists of a radar-guided 20 mm Gatling gun mounted on a swiveling base and is used by the U.S. Navy on every class of surface combat ship. The CIWS is designed to be the last line of defense against anti-ship missiles, with an effective range Of 1-5 nautical miles and 4,500 rounds per minute rate-of-fire.
The CIWS has two antennas that work together to engage targets. The first antenna is for searching. The search antenna provides bearing, range, velocity, heading, and altitude information to the computer. This information is analyzed to determine whether the object should be engaged. Once the computer identifies a target, the CIWS pivots to face the target and then hands the target over to the tracking antenna. The tracking antenna observes the target until the computer determines that the probability of a successful hit is maximized and then the system will either fire automatically or will recommend fire to the operator. While firing, the system tracks outgoing rounds and “walks” them onto the target.
Film Credits: PO1 Henry Dunphy, PO3 Samuel Souvannason, PO3 David Flewellyn, PO3 Patrick Dionne, PO3 David Flewellyn