Stalwart-class ocean surveillance ship

Stalwart-class auxiliary general ocean surveillance ships (T-AGOS) are a class of United States Naval Ship (USNS) auxiliary support Ocean Surveillance Ships commissioned between April 1984 and October 2000. Their original purpose was to collect underwater acoustical information using the Surveillance Towed Array Sensor System (SURTASS), a towed array passive sonar.

Stalwart-class
Stalwart as originally configured. Aft view of equipment for the Surveillance Towed-Array Sensor System (SURTASS), 1986.
USNS Stalwart
Class overview
Builders
Operators
Preceded byNone
Succeeded byVictorious class
In serviceApril 12, 1984
Completed23
Active5 not stricken by Naval Vessel Register
General characteristics
Displacement1,565 t.(lt) 2,535 t.(fl)
Length224 ft (68 m)
Beam43 ft (13 m)
Draft15 ft (4.6 m)
Propulsiondiesel-electric, two shafts, 1,600 hp (1,200 kW)
Speed11 knots (20 km/h; 13 mph)
Complement36

Stalwart, Indomitable, and Capable were modified to support narcotics interdiction by removing SURTASS equipment and adding an air-search radar and tactical data link equipment.[1]

Units

Ship Name Hull No. Delivery-
Stricken
Fate Link
Stalwart11984–2002State University of New York Maritime CollegeNVR NavSource
Contender21984–1992T/V General Rudder, flagship and training vessel of the Texas A&M University at GalvestonNVR NavSource
Vindicator31984–1993NOAA Hi'Ialakai (R-334)NVR NavSource NOAA
Triumph41985–1995Stricken, to be disposed of in support of Fleet training exerciseNVR NavSource
Assurance51985–1995Transferred to Portugal as NRP Almirante Gago Coutinho (A523)NVR NavSource
Persistent61985–1995T/S State of Michigan, Great Lakes Maritime Academy, Traverse City, MichiganNVR NavSource NMC
Indomitable71985–2002NOAA McArthur II (R-330)NVR NavSource NOAA
Prevail81986–Reclassified as Unclassified miscellaneous vessel Prevail (IX-537)NVR NVR NavSource
Assertive91986–2004Transferred to NOAA to be converted FY 2007 and to replace NOAA David Starr Jordan. Damaged during a fire at NOAA's pier in Seattle Washington July 2006, transferred to Seattle Maritime Academy. (R 444) in FY 2008NVR NavSource
Invincible101987–Converted to T-AGM 24, Missile Range Instrumentation ShipNVR NavSource MSC
Audacious111989–1997Transferred to Portugal as NRP Dom Carlos I (A522)NVR NavSource
Bold121989–2004EPA Bold (OSV-224)NVR NavSource EPA
Adventurous131988–1992NOAA Oscar Elton Sette (R-335)NVR NavSource NOAA
Worthy141988–1993Transferred to USGS, then to the US Army. Converted to a Missile Range Instrumentation Ship at Kwajalein Atoll's Ronald Reagan Ballistic Missile Defense Test SiteNVR NavSource KMRSS
Titan151989–1993NOAA Ka'Imimoana (R-333) until June 18, 2014; Research/Survey Vessel Ocean Titan IMO: 8835231 survey vessel own by Stabbert MaritimeNVR NavSource NOAA
Capable161989–2004NOAA Okeanos Explorer (R-337)NVR NavSource NOAA
Tenacious171987–1997Transferred to New Zealand as HMNZS Resolution (A14) (1997-2012), then sold into civilian service to EGS Group and renamed RV Geo ResolutionNVR NavSource
Relentless181990–1993NOAA Gordon Gunter (R-336)NVR NavSource NOAA

References

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