The Regional Maintenance Center at Puget Sound Naval Shipyard is seeking industry input for the maintenance, repair, and preservation of Caisson 4-5 Spare, with work to be performed at the contractor's facility. The facility must be located in the Puget Sound, WA region, defined as the West Coast from Olympia to Bellingham. The estimated period of performance is March 2027 through September 2027. The scope includes structural repairs, seal replacement, inspections, valve and pump replacements, preservation, and operational testing. No budget amount is specified in the description.