ManTech International Corp. won a five-year, $8.9 million task order from the Naval Sea Systems Command to provide engineering and technical support services for surface ship radiated noise trials, the company announced today.

The task order was issued under the SeaPort Enhanced Multiple Award contract, which ManTech won in April 2004. The company will collect and analyze data, develop software and provide documentation and engineering maintenance services under the naval command’s Surface Ship Radiated Noise Measurement Program.

“We provide information for the Navy to make critical ship alterations for acoustic signature reduction in the U.S. Navy fleet, which has implications for tactics, systems and self-defense requirements,” said Kenneth Farquhar, president of ManTech Systems Engineering Corp.

ManTech will perform the work at sea on U.S. Navy vessels and at selected Navy shore-based facilities.

The Naval Sea Systems Command is the largest of the Navy’s five systems commands. It builds and supports the country’s fleet of ships and combat systems. The command manages more than 100 acquisition programs and accounts for nearly one-fifth of the Navy’s budget.

Based in Fairfax, Va., ManTech provides technologies and solutions focused on mission-critical national-security programs to the federal government. The company employs about 6,000 people and had 2004 revenue of $842.4 million. It is No. 21 on Washington Technology’s 2005 Top 100 list of federal prime contractors.