Top left banner Top right banner
prev next
Bottom left banner Bottom right banner
Home : Home : Shipyards

Building the Shipyards the Nation Needs

The Navy's four public shipyards -- Norfolk Naval Shipyard (NNSY), Portsmouth Naval Shipyard (PNSY), Puget Sound Naval Shipyard and Intermediate Maintenance Facility (PSNS&IMF), and Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY&IMF) --  perform a vital role in national defense by executing maintenance on submarines and aircraft carriers in order to provide combat-ready ships to the fleet.

Originally designed and built in the 19th and 20th centuries to build sail- and conventionally-powered ships, the Navy's public shipyards are not efficiently configured to maintain and modernize nuclear-powered aircraft carriers and submarines. With the Navy's needed focus on operations, the aging shipyards have been unable to adequately sustain and optimize their facilities, utilities, dry docks, equipment and information technology infrastructure. These inefficiencies and obsolete facilities result in higher maintenance costs, schedule risks and reliability issues.

To create the shipyards that our nation needs requires making significant investments to modernize dry docks, optimize industrial processes and modernize standard equipment to bring these critical industrial sites to modern standards.

The Navy established the Shipyard Infrastructure Optimization Program (SIOP) program office in May 2018. SIOP is a centrally-managed program led by Naval Sea Systems Command (NAVSEA), with support from Naval Facilities Engineering Command (NAVFAC) and Commander, Navy Installations Command (CNIC). NAVSEA is the operating agent and the technical authority for all four shipyards, executing the capital equipment program while NAVFAC provides facilities engineering and construction programs, supports environmental and compliance requirements and retains head-of-contracting-activity authority for facilities and dry dock investments. CNIC is the Navy's shore integrator and directs the Navy's shore environmental program.

The Navy will ensure that the optimization process fully integrates environmental considerations including natural and cultural resources, water and air quality, and more. During the development of individual shipyard plans, the Navy will develop alternatives for assessment under the National Environmental Policy Act (NEPA), Endangered Species Act (ESA) and the National Historic Preservation Act (NHPA). The Navy will work with stakeholders as part of the decision-making process and will conduct all appropriate NEPA, natural resource and NHPA analyses; agency and government-to-government consultations and public engagement and obtain all required permits to ensure a proactive approach to environmental protection.


READ MORE >>

 

Navy Shipyards



Shipyard News

USS Illinois successfully undocks at Pearl Harbor Naval Shipyard
Virginia-class fast-attack submarine USS Illinois (SSN 786) leaves Dry Dock 2 at Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF), June 24, 2026, completing an important milestone in the submarine’s scheduled lifecycle maintenance period. Commissioned Oct. 29, 2016, Illinois is the 13th Virginia-class submarine. It is the second U.S. Navy ship to be named for the state of Illinois. Illinois is assigned to Submarine Squadron 1 and is capable of supporting various missions, including anti-submarine warfare; anti-surface ship warfare; strike warfare; special operations forces support; and intelligence, surveillance, and reconnaissance. PHNSY & IMF’s mission is to keep the Navy’s fleet “Fit to Fight
July 7, 2026 - Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF) successfully undocked Virginia-class fast-attack submarine USS Illinois (SSN 786), June 24, 2026, completing an important milestone in the...

CNO briefed on shipyard operations during his command visit to PSNS & IMF
Dave Sweet, Puget Sound Naval Shipyard & Intermediate Maintenance Facility SIOP director, leads Chief of Naval Operations Adm. Daryl Caudle on tours of Dry Docks 3 and 4 during the CNO's command visit to PSNS & IMF, June 3, 2026, in Bremerton, Washington. Caudle was briefed on infrastructure improvements and seismic upgrades during the tour. (U.S. Navy photo by Wendy Hallmark)
June 17, 2026 - Chief of Naval Operations Adm. Daryl Caudle and Master Chief Petty Officer of the Navy John J. Perryman visited Puget Sound Naval Shipyard & Intermediate Maintenance Facility, June 3, as part of their visit to the Pacific...

USS Colorado returns to Fleet from maintenance ahead of schedule, accelerating Pacific readiness
Virginia-class fast-attack submarine USS Colorado (SSN 788) returns from sea trials during a maintenance period at Joint Base Pearl Harbor-Hickam, June 6, 2026. Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF) and Colorado’s crew completed the scheduled maintenance period on June 10, 2026, 29 days ahead of schedule, returning to the fleet lethal and ready to defend the nation. Commissioned March 17, 2018, at Naval Submarine Base New London, Colorado is the 15th Virginia-class fast-attack submarine and fifth Block III submarine of the class. Colorado is assigned to Submarine Squadron 7 and is capable of supporting various missions, including anti-submarine warfare; anti-surface ship warfare; strike warfare; special operations forces support; and intelligence, surveillance, and reconnaissance. PHNSY & IMF's mission is to keep the Navy's fleet
June 11, 2026 - Virginia-class fast-attack submarine USS Colorado (SSN 788) completed a scheduled maintenance period at Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF) 29 days ahead of schedule June 10, 2026...