Anti-Air Warfare - AAW

All Hands, Jan, 2001

CALIBER: 3-inch/62

RATE OF FIRE: 85 rounds/min.

MUZZLE VELOCITY: 925 m/sec

RANGE: 10 nm

WEIGHT: 7.35 tons

MANUFACTURER: FMC Naval Systems Division and OTO Melara

Phalanx Close-in Weapons System (CIWS)

The Phalanx CIWS combines a 20 mm Gatling gun with search and tracking radar to provide surface ships with terminal defense against anti-ship missiles. The system underwent operational tests and evaluation on board USS Bigelow (DD 942) in 1977 and went into production in 1978 with the first system installed aboard USS Coral Sea (CV 43) in 1980. The original versions used rounds made from depleted uranium that have since been replaced by tungsten rounds

CALIBER: 20mm/53

RATE OF FIRE: 1,000-3,000 rounds/min.

MUZZLE VELOCITY: 3,650 ft./sec

RANGE: 6,000 yds.

MANUFACTURER: Hughes Missile Systems Company

60mm Mortar

Often combined with the M-60 machine gun, the 60mm mortar is used aboard patrol boats (PBs).

CALIBER: 60mm

RATE OF FIRE: 10 rounds/min. (trigger mode); 18 rounds/min. (drop mode)

MUZZLE VELOCITY: 500 ft./sec

RANGE: 1,850 to 2,000 yds.