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Sunday, January 29, 2012

Navy bulks-up on submarine-hunting sonobuoys for U.S. and Taiwan maritime security forces

Aviation Ordnanceman 2nd Class Matthew Quanstrom, assigned to Patrol Squadron (VP) 40 verifies the preset functions of AN/SSQ-53F sonobuoysU.S. Navy anti-submarine warfare (ASW) experts are buying 50,430 AN/SSQ-53F advanced passive sonobuoys from ERAPSCO Inc. in Columbia City, Ind. under terms of a $38.4 million contract modification announced Friday.

In this order, 49,990 sonobuoys are for the Navy and 440 are for the Taipei Economic and Cultural Representative Office in Washington, which is the diplomatic representative of Taiwan to the U.S.

The AN/SSQ-53F directional frequency and ranging (DIFAR) sonobuoy, which is dropped from fixed-wing aircraft or helicopters, uses four hydrophones -- each one a multichannel directional piezoelectric ceramic transducer -- that operate at depths of 90, 200, 400, and 1,000 feet to listen for potentially hostile submerged enemy submarines.

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