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With Firing Rates of Up to 4,500 Rounds per Minute, the Phalanx System Remains the Final Autonomous Barrier Against Missiles, Drones, and Aircraft.
The defense company Raytheon received a modification contract worth US$ 205 million to continue updating and maintaining the U.S. Navy’s MK 15 Phalanx Close-In Weapon System, the Pentagon reported.
The agreement includes conversions, revisions, and equipment supply, with a completion deadline of January 2029. This indicates that the Navy maintains confidence in the system as the last line of defense against anti-ship missiles, aircraft, and new shoreline threats that evade external defenses.
The Last Barrier of the Fleet
The MK 15 Phalanx, known as “CIWS” or “sea-whiz,” is a short-range, autonomous, and rapid-firing weapon platform designed for ship protection.
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Installed for the first time on the USS Coral Sea in 1980, the system has undergone decades of modernization. It is unique because it can search, detect, track, engage, and assess kills independently, without the need for external intervention.
Its radar performs automatic threat identification and attack within seconds, making it the only fully autonomous short-range naval defense system in operation.
Modernizations Over Time
In 1988, the Block 1 configuration entered service on the USS Wisconsin, enhancing radar tracking capabilities and increasing firepower.
The most recent variant, Block 1B, received a stabilized electro-optical sensor. This upgrade allowed it to confront new types of threats, such as fast surface boats, helicopters, and drones.
The system weighs 13,600 pounds (6,120 kilograms) and uses the M61A1 Vulcan Gatling gun. This weapon fires 20 mm rounds at a rate of 4,500 rounds per minute against missiles and aircraft or 3,000 rounds per minute against asymmetric targets.
The magazine supports up to 1,550 rounds in each operation.
Technical Capabilities
Essentially, the Phalanx is radar-guided and designed for short-range defense. It automatically searches for threats, tracks in real-time, and fires at targets, assessing destruction immediately afterward.
The use of electro-optical sensors in the Block 1B improved target identification and increased effectiveness in complex coastal scenarios. This way, it can confront high-speed cruise missiles, small aircraft, and low-altitude drones that would escape traditional radars.
Additionally, the CIWS can integrate with the ship’s combat systems, providing sensor data and fire control that enhance the fleet’s situational awareness.
Four Decades in Service
The production of the Phalanx began in 1978, maintaining an ongoing cycle of updates, revisions, and new installations to this day.
Raytheon took the lead on the program after acquisitions from General Dynamics Pomona Division and Hughes Missile Systems, consolidating its role as the primary contractor.
With the new contract, the Navy signals its intention to keep the Phalanx as a central piece of autonomous defense for at least another ten years.
Relevance in the Current Scenario
While new directed energy technologies and missile defense systems are in development, the Phalanx remains the only fully deployed short-range naval system capable of neutralizing high-speed anti-ship missiles.
For over 40 years, this weapon has served as the last protective barrier for aircraft carriers, destroyers, and other ships, facing threats that surpass external layers of defense.
Challenges of Modern Warfare
Permanent modernization reflects the evolution of naval warfare, marked by the increasing use of maneuvering missiles, swarms of drones, and asymmetric threats.
With rapid firing, autonomous operation, and a proven track record, the Phalanx CIWS continues to be a reliable resource to ensure the survival of the U.S. fleet in high-risk environments around the globe.
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