"New Jersey"s main battery consisted of nine 16"/50 caliber Mark 7 guns in three three-gun turrets, which could fire armor-piercing shells some 23 miles (42.6 km). Her secondary battery consisted of twenty 5"/38 caliber guns mounted in twin-gun dual purpose (DP) turrets, which could hit targets up to 9 miles (16.7 km) away. With the advent of air power and the need to gain and maintain air superiority came a need to protect the growing fleet of allied aircraft carriers, so "New Jersey" was fitted with an array of Oerlikon 20 mm and Bofors 40 mm anti-aircraft guns. When reactivated in 1968, "New Jersey" had her 20 mm and 40 mm AA guns removed and was tailored for use as a heavy bombardment ship. When reactivated in 1982, "New Jersey" had four twin 5"/38 caliber DP mounts removed. She was outfitted with four Phalanx Close-In Weapon System (CIWS) mounts for protection against missiles and aircraft, and eight Armored Box Launchers and eight Quad Cell Launchers designed to fire Tomahawk missiles and Harpoon missiles, respectively.