Prevail (IX-537) is a modified Stalwart-class auxiliary general ocean surveillance ship (AGOS) of the United States Navy previously operated by the U.S. Military Sealift Command as T-AGOS 8. Prevail was reclassified as Unclassified Miscellaneous (IX) in October 2003 and is unofficially referred to as TSV-1. In this context, TSV stands for Training Support Vessel, and should not be confused with the U.S. Army's USAV Spearhead Theater Support Vessel initiative.

Prevail is currently assigned to Commander, Carrier Strike Group Four and is operated with a minimal, hybrid crew of civil service and contract mariners. The ship provides a dedicated training support for Strike Group training for U.S. Atlantic Fleet ships, including serving as a platform for training Visit, Board, Search, and Seizure (VBSS) operations.

Stalwart-class ships were originally designed to collect underwater acoustical data in support of Cold War anti-submarine warfare operations in the 1980s.



Note: This ship was built in 1985, and since then has undergone many major changes. It's most recent major refit seems to have happened in 2013, this is why I make the distinction in the title.




Below info from Wikipedia.

Awarded	13 February 1981
Builder	Tacoma Boatbuilding Company
Laid down	13 March 1985
Launched	7 December 1985
In service	4 March 1986
Reclassified	IX-537 17 October 2003
Identification	IMO number: 8835566 MMSI number: 367841000 Callsign: NYRW
Status	in active service
General characteristics
Class and type	Stalwart-class ocean surveillance ship
Displacement	1,565 tons (light) 2,535 tons (full)
Length	224 ft (68 m)
Beam	43 ft (13 m)
Draft	15 ft (4.6 m)
Speed	11 knots (20 km/h; 13 mph)
Complement	33