Shipboard Systems

Goalkeeper - 30mm Close-in Ship Defense System

General Dynamics Ordnance and Tactical Systems currently produces the seven-barrel GAU-8/A 30mm Gatling gun and ammunition handling system for the Goalkeeper Close-In Weapon System. Goal-keeper is an extremely accurate weapon system for close-in defense of ships from high-speed missile and aircraft threats.

The system defeats incoming threats with the 4,200 shot-per- minute GAU-8/A Gatling gun, which fires lethal 30mm Missile-Piercing Discarding Sabot ammunition.

Automatic and continuous threat evaluation and target prioritization are performed by the system's search radar, which relays 2D target information to the dual frequency (X and KA band pencil beam). Extremely accurate and continuous track data at very low target altitudes is provided by the KA band pencil beam. Continuous automatic comparison is made of the signal/noise ratios of the X and KA band returns to ensure uninterrupted tracking in a degraded environment. Anti-clutter and Electronic Counter-Counter-measures features also safeguard accurate tracking.

Goalkeeper is a joint collaboration between GD-OTS and Thales Naval Nederlands. More than 50 systems have been delivered to some of the world's most technologically advanced navies, including the Royal Navy and the Netherlands' Navy.


Gun type

GAU-8/A, 30mm, seven-barrel Gatling gun


Mount with ammunition
Off-mount equipment
Total weight


14,018 pounds (6,372 kg)
7,766 pounds (3,530 kg)
21,784 pounds (9,902 kg)

Ammunition 30mm HEI, API, TP, MPDS
Feed system
Linkless, 1,200 round capacity

Electric / 1.10 mr

Search antenna
Beam width

X-band / linear array
1.5° horizontal, 60° vertical

Track antenna

X and KA band / cassegrain
Compatible with CIR


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