AN/SPG-51

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The superstructure of the USS Richard E. Byrd (DDG-23) showing the ship's radars, 1983. There are two AN/SPG-51 directors shown directly in the center of the image.
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The superstructure of the USS Richard E. Byrd (DDG-23) showing the ship's radars, 1983. There are two AN/SPG-51 directors shown directly in the center of the image.

The AN/SPG-51 is a tracking / illumination radar for Standard missiles. It is used for target tracking and Surface-to-air missile guidance on Virginia class cruisers, California class cruisers, and Kidd class destroyers. Older variants were used on Charles F. Adams class destroyers.

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