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USNS Gyre (AGOR 21).
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Class: GYRE (AGOR 21)
Design: SCB Project No. 734.71 (AGOR, Utility)
Displacement (tons): 900 light, 950 full
Dimensions (feet): 182' oa x 36' x 13.5' max. (AGOR 22 lengthened to 212' in 1984.)
Armament: none
Accommodations: 5 officers, 5 unlicensed, 23 scientists
Speed (kts.): 10 cruising
Propulsion (HP): 1,700
Machinery: 2 geared diesels, 2 screws

Construction:
AGORNameOrd/AcqBuilderKeelLaunchComm/Svc
21GYRE23 Jun 1972Halter Marine9 Oct 197225 May 197314 Nov 1973
22MOANA WAVE23 Jun 1972Halter Marine10 Oct 197223 Jun 197316 Jan 1974

Disposition:
AGORNameTDecomm/CustStrikeDisposalFateMA Sale/Depart
21GYRETDECOM17 Aug 199217 Aug 1992Trf--
22MOANA WAVEDECOM30 May 19992 Nov 1999Trf--

Class Notes:
Approved characteristics for an Oceanographic Research Ship (AGOR, UTILITY), SCB Project No. 734.71, were promulgated on 20 April 1970 with a single change on 12 July 1974. The class was designed to reduce cost of both acquisition and life cycle costs by adopting commercial standards and practices in design. On 6 December 1972 SECNAV assigned the classifications AGOR 21 and AGOR 22 and names GYRE and MOANA WAVE to these two Oceanographic Research Ships (Utility Class). His notice stated that they were named for oceanographic features, and that GYRE was to be employed by Texas A&M University in oceanographic research while MOANA WAVE ("Ocean Wave") was to perform identical service for the University of Hawaii. They were built by Todd Seattle Halter Marine, Moss Point, Miss.

MOANA WAVE was chartered to the Naval Electronics System Command 1977-1982 for tests of SURTASS and operated out of Fort Lauderdale, Florida, and Little Creek, Va. She was then lengthened in 1984 by the insertion of a 9-meter section amidships for continued service with the Univ. of Hawaii. The reconfiguration of her superstructure including the substitution of a single funnel on the centerline for the original two abreast.

Ship Notes:
AGORNameMANotes
21GYREFY 1972/71. Loaned to Texas A&M University (TAMU) and operated by its Department of Oceanography. Title transferred to TAMU 1992. Retired by them 31 Aug 2005, sold in November 2005 to TDI-Brooks International, Inc., College Station, Texas. Flagged in Vanuatu, Port Vila, GYRE was advertised for work out of Mexico, Northern South America and West Africa.
22MOANA WAVEFY 1972/71. Loaned to Univ. of Hawaii 1974-1999. MOANA WAVE was purchased in December 1999 by Ahtna Inc., an Alaska Native Corporation, and was renovated for use in underwater mapping and the fiber optic cable industry. In 2010 the Foundation for Research Support of the State of São Paulo, Brazil, funded the acquisition of MOANA WAVE by the University of São Paulo after a fire in 2008 rendered her inoperable for her previous use as a research ship, and the ship, renamed ALPHA CRUCIS for the star that represents São Paulo on the Brazilian flag, departed the shipyard in Seattle where she had been reconditioned on 29 March 2012 for Brazil.

Page Notes:
Compiled: 20 Oct 2021
© Stephen S. Roberts, 2021