 Because New Jersey had been recalled for service in the Vietnam War her modernization differed from her sisters for a number of reasons . When reactivated in 1967 New Jersey had her 20 mm Oerlikon and 40 mm Bofors anti @-@ aircraft guns removed , and received improved electronic warfare capabilities . This alteration helped reduce the time it took get New Jersey recommissioned : since she was not in her World War II format the only major physical alteration to New Jersey involved the removal of four of her ten 5 inch gun mounts to make room for the Armored Box Launchers . In addition to saving time , this also made New Jersey cheaper to reactivate since the cost needed to modernize the battleship only included the addition of missile and gun system mounts , electronic warfare suites , and improved radar and gun spotter technology . 
