Commander, Navy Installations Command (CNIC) Design-Bid-Build, RM-23-1146 Dry Dock 2 Caisson Overhaul at Portsmouth Naval Shipyard (PNSY) in Kittery, Maine

NAVFACSYSCOM Atlantic is conducting market research for a design-bid-build project to overhaul the Dry Dock 2 Caisson at Portsmouth Naval Shipyard. This project, solicitation N6247026R0031, involves structural modifications including caisson seat and vertical extensions to provide flood protection from Berth 6 to Berth 5. Portions of the work require the caisson to be removed from the water. The Navy is seeking contractors with experience in maritime infrastructure projects valued between $10 million and $25 million. Requirements include technical experience with floating vessels or caissons and access to a facility within 1,000 miles of the shipyard. The notice includes mandatory templates for contractor information, project experience, and a technical matrix. A revised Sources Sought Notice was issued on June 15, 2026, providing updated submission instructions. The Navy is conducting market research for the Dry Dock 2 Caisson overhaul, which requires out-of-water servicing and specific facility access. The government has provided a revised notice and administrative templates to gather data on industry interest, bonding capacity, and technical experience. This information will be used to determine the acquisition strategy and potential set-asides. Work includes installing a caisson seat extension and a vertical extension to provide flood protection across Berths 5 and 6.