 Over the next several months the ship was upgraded with the most advanced weaponry available ; among the new weapons systems installed were four MK 141 quad cell launchers for 16 AGM @-@ 84 Harpoon anti @-@ ship missiles , eight Armored Box Launcher ( ABL ) mounts for 32 BGM @-@ 109 Tomahawk missiles , and a quartet of the United States Navy 's Phalanx Close in Weapon System ( CIWS ) Gatling guns for defense against enemy anti @-@ ship missiles and enemy aircraft . New Jersey also received eight RQ @-@ 2 Pioneer Unmanned Aerial Vehicles , which are remotely controlled drones that replaced the helicopters previously used to spot for her nine 16 " / 50 Mark 7 guns . Also included in her modernization were upgrades to radar and fire control systems for her guns and missiles , and improved electronic warfare capabilities . 
