Fire-control radars of the United States Navy

The AN/SPY-1 is a United States Navy passive electronically scanned array (PESA) 3D radar system manufactured by Lockheed Martin, and is a key component of the Aegis Combat System. The system is computer controlled and uses four complementary antennas to provide 360-degree coverage. The system was first installed in 1973 on and entered active service in 1983 as the SPY-1A on . The -1A was installed on ships up to CG-58, with the -1B upgrade first installed on in 1986. The upgraded -1B(V) was retrofitted to existing ships from CG-59 up to the last, .

AN/SPQ-9A (sometimes pronounced as "spook nine") is a United States Navy multi-purpose surface search and fire control radar used with the Mk-86 gun fire-control system (MK86 GFCS). It is a two dimensional surface-search radar, meaning it provides only range and bearing but not elevation. It is intended primarily to detect and track targets at sea level, on the surface of the water for either gun fire engagement or navigation. It can however, also detect and track low altitude (below 2000 ft) air targets.

The AN/SPG-62 is a continuous wave fire-control radar developed by the United States, and it is currently deployed on warships equipped with the Aegis Combat System. It provides terminal target illumination for semi-active surface-to-air missiles. The antenna is mechanically steered, uses a parabolic reflector, and operates at 8 to 12 GHz (X Band). The system is a component of the Mk 99 fire-control system (FCS).

The AN/SPG-51 is an American tracking / illumination fire-control radar for RIM-24 Tartar and RIM-66 Standard missiles. It is used for target tracking and Surface-to-air missile guidance as part of the Mk. 73 gun and missile director system, which is part of the Tartar Guided Missile Fire Control System.

thumb|upright|Rear view of the AN/SPG-55B aboard . The AN/SPG-55 was an American tracking / illumination radar for Terrier and RIM-67 Standard missiles (SM-1ER/SM-2ER). It was used for target tracking and surface-to-air missile guidance as part of the Mk 76 missile fire control system. It was controlled by a UNIVAC 1218 computer.

thumb|AN/SPG-60 Radar The AN/SPG-60 (pronounced as "SPIG sixty") is a United States tracking radar that is part of the MK-86 Gun Fire Control System (GFCS). It is used for air tracking and on some MK-86 configurations it is also used for illumination for RIM-24 Tartar and RIM-66 Standard missiles. Though the radar is primarily an air tracking radar, the SPG-60 radar can be used for surface tracking. With the boresight mounted camera, the radar could also be used as a sight for optical tracking, optical engagement and damage assessment.

The AN/SPG-53 was a United States Navy Gun Fire-control radar (International Telecommunication Union classification: radiolocation land station in the radiolocation service), used in conjunction with the Mark 68 gun fire-control system.