Spy ship
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A spy ship or reconnaissance vessel is a dedicated ship intended to gather intelligence, usually by means of sophisticated electronic eavesdropping. In a wider sense, any ship intended to gather infor
USS Liberty, a "technical research ship", in 1967
Oker, an Oste-class ELINT and reconnaissance ship, of the German Navy
SSV-33 Ural, the largest spy ship ever constructed, used by the USSR to observe and track US ballistic and orbital launches.
While USNS Vanguard was not strictly a spy ship, being used for space tracking, there is some overlap between her capabilities and those of a spy ship.
Ukrainian ship Pereyaslav
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Pereyaslav is a small reconnaissance ship of the project 1824B, a special purpose ship of the 29th Division of the Naval Forces of Ukraine. It was originally named GS-13 under the Hydrographic Service
Pereyaslav in March 2011