Ultra Electronics Ocean Systems Inc., Braintree, Massachusetts, is awarded an indefinite-delivery requirements contract in the amount of $42,099,961. The contract contains firm-fixed-price, cost-plus-fixed-fee, and cost reimbursable contract line items supporting the production and delivery of Acoustic Device Countermeasure (ADC) MK 2 and ADC MK 2 training devices used on surface vessels and submarines. This contract has a five-year ordering period from fiscal years 2022 to 2027, and potential deliveries of Foreign Military Sales units and services in support of the United Kingdom and the Netherlands. Work will be performed in Braintree, Massachusetts (96%); Chantilly, Virginia (2%); and Wake Forest, North Carolina (2%), with an ordering period through July 2027. Fiscal 2022 weapons procurement (Navy) funds in the amount of $2,245,494 (39%); fiscal 2022 other procurement (Navy) funds in the amount of $2,194,266 (38%); and fiscal 2021 weapons procurement (Navy) funds in the amount of $1,357,542 (23%) will be obligated at time of award and will not expire at the end of the current fiscal year. This contract was competitively solicited via the System for Award Management website, with one offer received. The Naval Undersea Warfare Center Division Keyport, Keyport, Washington, is the contracting activity (N00253-22-D-0002).