Category:Stalwart class ocean surveillance ships

**Stalwart-class research vessel**
	ship class of the Portuguese Navy
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Instance of	ship class;
Subclass of	research vessel; ship;
Named after	Carlos I of Portugal;
Country of origin	United States of America;
Operator	United States Navy; Portuguese Navy (1985–);
Has part(s)	USNS Stalwart (lead ship); USNS Contender; USNS Vindicator; USNS Triumph; NRP Almirante Gago Coutinho; USNS Persistent; DSSV Pressure Drop; USNS Prevail; USNS Assertive; USNS Invincible; NRP Don Carlos I; USNS Bold; USNS Adventurous; USNS Worthy; Ocean Titan; USNS Capable; HMNZS Resolution; USNS Relentless;
Manufacturer	Tacoma Boatbuilding Company; Bollinger Mississippi Shipbuilding;
Inception	1984;
Mass	2,262 t;
Beam	13.1 m;
Draft	4.5 m;
Length	68.3 m;
Speed	11 kn;
Maximum capacity	34 human (ship's company);
Followed by	Victorious-class ocean surveillance ship;
Authority file
	Q3679501;
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English: Stalwart class ocean surveillance ships (T-AGOS) were a class of United States Naval Ship auxiliary support Ocean Surveillance Ships commissioned between April 1984 and January 1990. Their original purpose was to collect underwater acoustical information using the Surveillance Towed Array Sensor System (SURTASS), a towed array passive sonar.