Defense Maritime Solutions Inc., Chesapeake, Virginia, is being awarded a $16,387,030 firm-fixed-priced stand-alone contract for the manufacture of 12 main shaft seal assemblies in support of the submarine main propulsion system on Virginia-class submarines. The contract has no options. All work will be performed in Havant, Hampshire, United Kingdom, and is expected to be completed by June 2026. Working capital funds (Navy) in the full amount of $16,387,030 will be obligated at time of award, and funds will not expire at the end of the current fiscal year. One company was solicited for this sole-source requirement under the authority of 10 U.S. Code 3204(a)(1) with one offer received. Naval Supply Systems Command Weapon Systems Support, Mechanicsburg, Pennsylvania, is the contracting activity (N00104-24-C-YB16).