High Quality Content by WIKIPEDIA articles! Ship gun fire-control systems (GFCS) enable remote and automatic targeting of guns against ships, aircraft, and shore targets, with or without the aid of radar or optical sighting. Most US ships destroyers or larger (but not destroyer escorts or escort carriers) employed GFCS for 5 inch and larger guns, up to battleships such as the USS Iowa. After the 1950s, GFCSs were integrated with missile fire-control systems and other ship sensors.