The U.S. Coast Guard requires contractor dive services to inspect and clean the sea chest and stern tube cooling systems and replace zinc anodes as needed aboard the CGC Donald Horsley. Services will be performed at the vessel's location in Corpus Christi, TX (1201 North Navigation Blvd) during the period of September 5–7, 2026. This is a total small business set-aside (NAICS 336611) with a firm-fixed-price purchase order to be awarded under simplified acquisition procedures. Offerors must be registered in SAM.gov and submit a detailed cost breakdown, warranty information, and product data