The ''Stalwart''-class auxiliary general ocean surveillance ships ( T-AGOS) are a class of

United States Naval Ship United States Naval Ship (USNS) is the prefix designation given to non- commissioned ships that are property of the United States Navy (USN). Definition United States Naval Ships are unarmed auxiliary support vessels owned by the U.S. Navy ...

(USNS) auxiliary support

ocean surveillance ship 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 information could be considered a spy ship. Sp ...

s commissioned between April 1984 and October 2000. Their original purpose was to collect underwater acoustical information using the

Surveillance Towed Array Sensor System The AN/UQQ-2 Surveillance Towed Array Sensor System (SURTASS), colloquially referred to as the ship's "Tail", is a towed array sonar system of the United States Navy. SURTASS Twin-Line consists of either the long passive SURTASS array or the T ...

(SURTASS), a towed array passive sonar. ''Stalwart'', ''Indomitable'', and ''Capable'' were modified to support

narcotics The term narcotic (, from ancient Greek ναρκῶ ''narkō'', "I make numb") originally referred medically to any psychoactive compound with numbing or paralyzing properties. In the United States, it has since become associated with opiates ...

interdiction by removing SURTASS equipment and adding an air-search radar and tactical data link equipment.The US Navy

Units

References

{{DEFAULTSORT:Stalwart Class Ocean Surveillance Ship Auxiliary surveillance ship classes Auxiliary research ship classes Ships built by Tacoma Boatbuilding Company