This is a firm fixed-price solicitation for cleaning and preserving potable water tanks onboard a submarine at the Naval Submarine Base New London. The period of performance is from June 1, 2026, to June 10, 2026. The successful offeror must be an approved NAVSEA vendor and hold at least a CMMC Level 1 certification. The evaluation for award will prioritize technical qualifications and past performance over price, though price remains a significant factor. Offers must provide a detailed price quote broken down by Contract Line Item Number (CLIN).