Dry Dock Recapitalization

This project involved comprehensive repairs and upgrades to the dry dock superstructure, including panel replacement, steel caisson repairs, bridge crane refurbishment, mechanical and electrical system improvements, ancillary building repairs, and other related work. Construction was organized into three distinct phases to ensure efficient progress and minimal operational disruption.

Phase A established a contractor “free zone” to support construction activities, built temporary facilities to relocate the Trident Refit Facility (TRF) out of the Waterfront Restricted Area (WRA), and procured long-lead items needed for the next phase.

Phase B focused on all work that could not be performed while a submarine was in the dry dock. This included replacing or refurbishing steel structures, overhead cranes, rails, and elevators; blast cleaning and recoating structural steel; metal panel replacement; concrete repairs; refurbishment of flooding roller gates; upgrades to super-flooding, dewatering, drainage, and pressure relief systems; replacement of mechanical piping and electrical systems; and repairs to ancillary buildings and the steel caisson.

Phase C completed the remaining work that could be performed with a submarine present in the dry dock, followed by the removal of the contractor free zone and temporary infrastructure installed during Phase A.

This phased approach ensured the project was delivered safely, efficiently, and with minimal impact to ongoing operations.