The U.S. Coast Guard Deputy Commandant for Systems, on behalf of the Surface Forces Logistics Center, seeks a firm-fixed-price service contract for on-site labor and services to troubleshoot and repair the ships service diesel generator (SSDG) onboard USCGC Alder. All work must be performed on-site at Coast Guard Sector San Francisco, 1 Yerba Buena Rd., San Francisco, CA 94130, with a planned period of performance from 28 September 2026 through 07 October 2026. This is a 100% total small business set-aside under NAICS 336611 (PSC J999), and award will go to the responsible offeror whose conforming quote is most advantageous, based on pass/fail Technical Capability, pass/fail Past Performance, and Total Price, with award to the lowest evaluated price among acceptable quotes. Offerors must demonstrate strict conformity with the attached Statement of Work and acceptable recent/relevant past performance (satisfactory or higher; neutral acceptable if none), and must identify any subcontractors, including contact details, specific work, and percentage of work. Quotes must be submitted electronically on a firm-fixed-price, all-inclusive basis with no conditional pricing or price escalation; the Government intends to award without discussions, so initial submissions should represent the best offer.