USNS Stalwart (T-AGOS-1) - Design and Construction

Design and Construction

Stalwart was laid down on 3 November 1982 by the Tacoma Boat Building Company, in Tacoma, Washington. She was launched on 11 July 1983, and entered service with the United States Military Sealift Command on 12 April 1984.

Stalwart and her sister ships were designed to collect underwater acoustical data in support of Cold War anti-submarine warfare operations in the 1980s. The main equipment used for this role was the Surveillance Towed Array Sensor System (SURTASS), a collection of acoustic sensors that process and transmit data by satellite to shore bases for in-depth analysis. SURTASS is a neutrally buoyant, 8,575-foot (2,614 m) array deployed on a 6,000 feet (1,800 m) tow cable, capable of operating between 500 and 1,500 feet (150 and 460 m) in depth.

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