page_title: AN/SPY-1
section_title: Operators
hierarchical_section_title: AN/SPY-1 / Operators
caption_attribution_description: JS Ashigara (DDG-178). My favorite spot. Making a ship.
context_page_description: The AN/SPY-1 is a United States Navy 3D radar system manufactured by Lockheed Martin. The array is a passive electronically scanned system and is a key component of the Aegis Combat System. The system is computer controlled, using four complementary antennas to provide 360 degree coverage. The system was first installed in 1973 on USS Norton Sound and entered active service in 1983 as the SPY-1A on USS Ticonderoga. The -1A was installed on ships up to CG-58, with the -1B upgrade first installed on USS Princeton in 1986. The upgraded -1B(V) was retrofitted to existing ships from CG-59 up to the last, USS Port Royal.
context_section_description:  Australia: Hobart-class destroyer
   Japan: Kongō-class destroyers, Atago-class destroyers, Maya-class destroyers
   Norway: Fridtjof Nansen–class frigate
   Spain: Álvaro de Bazán–class frigate
   South Korea: King Sejong the Great–class destroyer (KDX-III)
   United States: Ticonderoga-class cruiser, Arleigh Burke–class destroyer
caption: JS Ashigara with AN/SPY1D(V)
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