![The US Navy Virginia-class fast-attack submarine USS Missouri departs Pearl Harbor Naval Shipyard after completing a scheduled extended dry-docking selected restricted availability (EDSRA) on May 10, 2020. (Photo: US Navy/Chief Mass Communication Specialist Amanda R. Gray)](http://media.assettype.com/bairdmaritime%2Fimport%2Fwp-content%2Fuploads%2F210917-10-USN.jpg?w=480&auto=format%2Ccompress&fit=max)
The US Navy, through the Naval Facilities Engineering Systems Command (NAVFAC), has awarded a US$500 million indefinite delivery/indefinite quantity (IDIQ) architecture-engineering contract for structural and waterfront-related projects at Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF) in Hawaii and Puget Sound Naval Shipyard and Intermediate Maintenance Facility (PSNS & IMF) in Washington State.
The five-year contract will mainly support construction, repair, and alteration projects at both shipyards as part of the navy's comprehensive Shipyard Infrastructure Optimization Program (SIOP) and will help ensure that both shipyards, which were originally designed and built in the 19th and 20th centuries, are able to maintain, modernise, and repair navy ships and submarines and return them to the fleet on time.
SIOP is a joint effort between Naval Sea Systems Command (NAVSEA), NAVFAC, and Commander, Navy Installations Command (CNIC) to recapitalise and modernise the infrastructure at the navy's four public shipyards, including repairing and modernising dry docks, restoring shipyard facilities and optimising their placement, and replacing aging and deteriorating capital equipment.