Stalwart-class ocean surveillance ship

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Stalwart class
USNS Stalwart port quarter view.jpg
USNS Stalwart
Class overview
Builders
Operators
Preceded byNone
Succeeded by Victorious 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

The 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, 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 NameHull No.Delivery-
Stricken
FateLink
Stalwart 11984–2002 State University of New York Maritime College NVR NavSource
Contender 21984–1992T/V General Rudder, flagship and training vessel of the Texas A&M University at Galveston NVR NavSource
Vindicator 31984–1993 NOAA Hi'Ialakai (R-334) NVR NavSource NOAA
Triumph 41985–1995Stricken, to be disposed of in support of Fleet training exercise NVR NavSource
Assurance 51985–1995Transferred to Portugal as NRP Almirante Gago Coutinho (A523) NVR NavSource
Persistent 61985–1995T/S State of Michigan, Great Lakes Maritime Academy, Traverse City, Michigan NVR NavSource NMC
Indomitable 71985–2002NOAA McArthur II (R-330) NVR NavSource NOAA
Prevail 81986–Reclassified as Unclassified miscellaneous vessel Prevail (IX-537) NVR NVR NavSource
Assertive 91986–2004Transferred 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 2008 NVR NavSource
Invincible 101987–2021Converted to T-AGM 24, Missile Range Instrumentation Ship NVR NavSource MSC
Audacious 111989–1997Transferred to Portugal as NRP Dom Carlos I (A522) NVR NavSource
Vigorous, renamed Bold 121989–2004 EPA Bold (OSV-224) until ~2013. Converted to R/V Bold Explorer, EGS Group, 2020. [2] NVR NavSource EPA
Adventurous 131988–1992NOAA Oscar Elton Sette (R-335) NVR NavSource NOAA
Worthy 141988–1993Transferred to USGS, then to the US Army. Converted to a Missile Range Instrumentation Ship at Kwajalein Atoll's Ronald Reagan Ballistic Missile Defense Test Site NVR NavSource KMRSS
Titan 151989–1993NOAA Ka'Imimoana (R-333) until June 18, 2014; Research/Survey Vessel Ocean Titan IMO: 8835231 survey vessel own by Stabbert Maritime NVR NavSource NOAA
Capable 161989–2004NOAA Okeanos Explorer (R-337) NVR NavSource NOAA
Tenacious 171987–1997Transferred to New Zealand as HMNZS Resolution (A14) (1997-2012), then sold into civilian service to EGS Group and renamed RV Geo Resolution NVR NavSource
Relentless 181990–1993NOAA Gordon Gunter (R-336) NVR NavSource NOAA

References

  1. The US Navy Archived 2005-11-30 at the Wayback Machine
  2. "Second ex-US Navy surveillance ship joins EGS fleet". Baird Maritime. 30 April 2020. Retrieved 29 December 2023.