MK 15 - PHALANX CLOSE-IN WEAPONS SYSTEM (CIWS)
Description
Type Close-in weapon system
Place of origin United States

Fast-reaction, detect-through-engage, radar guided, 20-millimeter gun weapon system.
Background
MK 15 Phalanx CIWS provides ships of the U.S. Navy with an inner layer point defense capability against Anti Ship Missiles (ASM), aircraft, and littoral warfare threats that have penetrated other fleet defenses. Phalanx automatically detects, evaluates, tracks, engages, and performs kill assessment against ASM and high speed aircraft threats.

The current Phalanx variant (Block 1B) adds the ability to counter asymmetric warfare threats through the addition of an integrated, stabilized, Electro Optic sensor. These improvements give Phalanx the added ability to counter small high speed surface craft, aircraft, helicopters, and Unmanned Aerial Systems (UAS).

Phalanx is the only deployed close-in weapon system capable of autonomously performing its own search, detect, evaluation, track, engage and kill assessment functions. Phalanx also can be integrated into existing ship combat control systems to provide additional sensor and fire-control support to other installed ship weapon systems.
General Characteristics
Primary Function Fast-reaction, detect-thrugh-engage, radar guided 20-millimeter gun weapon system.
Date Deployed Block 0: 1980 (aboard USS Coral Sea)
Block 1: 1988 (aboard USS Wisconsin)
Block 1B: 1999 (aboard USS Underwood)
Weight (Block 1B): 13,600 pounds (6,120 kg)
Type Fire M-61A1 Gatling Gun - ASM & Aircraft: 4,500 rounds/min, Asymmetric Threats: 3,000 rounds/min
Magazine Capacity 1,550 rounds
Caliber 20mm
Ammunition Armor Piercing Discarding Sabot
Platforms
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