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USS MONOB I (YAG 61) early in her career.
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Class: MONOB I (YAG 61)
Design: Navy YW 83
Displacement (tons): 1,390 full
Dimensions (feet): 173.8' oa x 33.2' x 15.75'
Accommodations: 20 civilian
Speed (kts.): 11
Propulsion (HP): 850
Machinery: 1 diesel, 1 swiveling propeller
|61||MONOB I||1969||Zenith Dredge||1 Dec 1942||3 Apr 1943||Jun 1970|
|61||MONOB I||DECOM||2 Aug 1996||2 Aug 1996||Trf.||--|
Former World War II water barge YW 87 converted by the Norfolk Naval Shipyard between 1 July and 1 October 1960 to a "Mobile Noise Barge" (MONOB) for use in the Navy's ship-silencing program and first used during the acoustic trials of a submarine in January 1961. She was designed to be towed to her operating area by a tug and would then use a 220 horsepower outboard unit to maneuver at about four knots within that area. (She later got a 850 BHP Caterpillar diesel and a swiveling propeller for independent mobility.) She first operated in deep (over 400 fathoms) and acoustically quiet waters in the Key West area. In around 1966 the AUTEC (Atlantic Undersea Test and Evaluation Center) and TOTO (Tongue of the Ocean) acoustic ranges in the Bahamas entered service, and according to her unofficial insignia she "sailed the triangle" between Florida, Exuma Sound, and the TOTO range, one of her functions being to tend large buoys. She operated from Port Everglades, Port Canaveral, and the US Naval Mine Defense Laboratory at Panama City, and was under the technical cognizance of the David Taylor Model Basin in Carderock, Md. and its successors. She was reinstated on the Naval Vessel Register in early 1969 as IX 309, probably at the same time as IX 308, and on 1 July 1970 was redesignated YAG 61. She later served in the Carderock Acoustic Trials Detachment to support the ballistic missile submarine silencing program. DEER ISLAND (YAG 62) was employed from 1982 in similar underwater sound programs. In 1992 she was scheduled to be replaced by HAYES (AG 195). [For insignia see https://www.usmilitariaforum.com/forums/index.php?/topic/288560-usn-yard-craft-yos-yogs-ytbs-ytms-yns-etc/]
|61||MONOB I||(ex-IX 309 1 Jul 1970, ex-YW 87, compl. 17 Oct 1943). Active June 1970. Trf. to Mexico as Rio Suchiate (BI 05) (BI = Buque investigacion, or surveying ship)|
Compiled: 21 Oct 2021
© Stephen S. Roberts, 2021
Sources: DB, Maroon, NVR, Navsrc