Lockheed Martin Completes In-Water Testing of Sonar Array

The cylindrical array is the primary acoustic sensor for submerged operations. It consists of a special hydrophone configuration that is unique to every platform. Lockheed Martin designed and developed the S-80's new array under a 2005 contract with the Spanish government to provide the submarine's integrated combat system.

In addition to the cylindrical array sonar, the S-80's integrated combat system will also contain a flank array sonar and a passive ranging sonar, as well as mine and obstacle detection sonar. The flank and passive ranging sonars were successfully tested in June. The sonars are designed, manufactured and assembled by Lockheed Martin's Undersea Systems business in Manassas, Vancouver and Syracuse, NY.

The new S-80 integrated combat system leverages proven commercial technology used on the US Navy's Virginia, Seawolf and Los Angeles class submarines, as well as Lockheed Martin's experience as the lead contractor for the US Navy's Acoustic Rapid Commercial-Off-the-Shelf (COTS) Insertion program since its inception in 1996. This experience with the Navy has influenced the company's work on exportable versions of sonar array systems specifically for non-nuclear submarines, including Lockheed Martin's forward and back-fit scalable International Diesel-Electric Submarine Integrated Combat System (SUBICS).

"These successful tests are important milestones towards satisfying key deliveries for the S-80 submarine program and also provide substantial risk mitigation prior to installation on the actual submarine," explained Al Simpson, program management director, International Submarines and Coastal Systems for Lockheed Martin. "The delivery of the entire open architecture, COTS-based, integrated combat system for S-80 will usher in a new and important capability for diesel-electric submarines."

Headquartered in Bethesda, Md., Lockheed Martin is a global security company that employs about 140,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. The corporation reported 2008 sales of $42.7 billion.

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