Maintenance, Repair, and Preservation of Caisson 4-5 Spare

The U.S. Navy seeks a qualified contractor to perform comprehensive maintenance, repair, and preservation on a single Caisson (spare) measuring approximately 147 ft long, 27 ft wide, and 54 ft high. Work includes docking the caisson at a facility in the Puget Sound region, cleaning, structural repairs, seal replacements, ultrasonic and visual inspections, tank cleaning, hatch maintenance, valve and pump replacements, dewatering system upgrades, and final operational testing before undocking and return to the government. The contract is firm‑fixed‑price, full‑open competition, and the vessel will be available from early April to early October 2027.