USNS Mary Sears (T-AGS-65)

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USNS Mary Sears
Career (USA)
Namesake: Mary Sears
Owner: United States Navy
Operator: Military Sealift Command
Awarded: 21 December 1998
Builder: Halter Marine
Laid down: 28 July 1999
Launched: 19 October 2000
In service: 17 December 2001
Status: in active service, as of 2024
General characteristics
Class and type: Pathfinder-class survey ship
Displacement: 5,000 long tons
Length: 329 ft (100 m)
Beam: 58 ft (18 m)
Draft: 19 ft (5.8 m)
Speed: 16 kn (30 km/h)
Complement: 26 mariners/27 sponsor personnel

USNS Mary Sears (T-AGS 65) is a Pathfinder class oceanographic survey ship. It is the sixth and final ship of its class. Mary Sears is named after Commander Mary Sears of the United States Naval Reserve, who was instrumental in the development of the Woods Hole Oceanographic Institution and is regarded as one of the initial oceanographers in the United States Navy.

The ship has sonar, underwater metal detection and satellite imagery capabilities.[1][2]

In mid January 2007, the Mary Sears deployed to Sulawesi, Indonesia to aid in the search for the missing Adam Air Flight 574 [1] On January 24, 2007, it was reported by the U.S. Embassy in Jakarta that Mary Sears reported detecting pinger signals, at a depth of 1,700 metres (5,600 ft)[3] on the same frequency as those of the lost aircraft's cockpit voice recorder, located in the area where the aircraft is believed to have gone down. Additionally, the Mary Sears had also detected "heavy debris scattered over a wide area".[4]


  1. 1.0 1.1 Indonesia steps up search for missing plane - Swissinfo
  2. Crashed jetliner found in Indonesia Obtained 11 January 2007
  3. "Jakarta plans to retrieve recorder". Associated Press. January 26 2007. Retrieved 2007-01-26. 
  4. "U.S. picks up signal of missing jet". Associated Press. January 25, 2007. Retrieved 2007-01-25. 

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