Seaward Services Inc., New Albany, Indiana (N3220524C4128P00001), is awarded a $7,514,330 modification under a previously awarded firm-fixed-price contract (N3220524C4128) for the operation and maintenance of USNS Guam High Speed Transport (HST-1). Work will be performed outside of the U.S. and outlying areas in support of the III Marine Expeditionary Force, and is expected to be completed by Dec. 31, 2025. This contract includes a six-month base period, three two-month option periods, and a six-month option under Federal Acquisition Regulation (FAR) 52.217-8, which, if exercised, would bring the cumulative value of this contract to $11,840,369. Working capital funds (Navy) in the amount $3,918,256 are currently obligated for fiscal 2024 and will not expire at the end of the fiscal year. This contract was not competitively procured. The contract was prepared under the authority of 41 U.S. Code 3304(a)(1) as implemented by FAR 6.302-1, Only one responsible source and no other supplies or services will satisfy agency requirements. The United States Navy’s Military Sealift Command, Norfolk, Virginia, is the contracting activity.