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USNS Gyre (AGOR 21).
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Class: GYRE (AGOR 21)
Design: SCB Project No. 734.71 (AGOR, UTILITY) [NVR AGOR-22]
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

21GYRE23 Jun 1972Halter Marine9 Oct 197225 May 197314 Nov 1973
22MOANA WAVE23 Jun 1972Halter Marine9[10 NVR] Oct 197218 Jun 197316 Jan 1974

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. 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. Built by Todd Seattle Halter Marine, Moss Point, Miss. MOANA WAVE was lengthened in 1984 by the insertion of a 9-meter section amidships, and the reconfiguration of her superstructure included the substitution of a single funnel on the centerline for the original two abreast.

Ship Notes:
21GYREFY 1972/71. [Or ln. 7 Jun 1973.] Loaned to Texas A&M University (TAMU) and operated by its Department of Oceanography. Title transferred 1992. Retired 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. [Or ln. 23 Jun 1973, NVR abovd.][Strike of AGOR 22 is 24 Jun 1999 in NVR.] Loaned to Univ. of Hawaii 1974-1999. Chartered to tne Naval Electronics System Command 1977-1982 for tests of SURTASS and operted out of Fort Lauderdale, Florida, and Little Creek, Va. Lengthened 1984 and resumed operations with the Univ. of Hawaii. AGOR 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 its previous research ship inoperable, 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
Sources: DB, Maroon