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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.


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Navy Shipyards



Shipyard News

Command employees reflect on the work they do in support of the Navy fleet
Houston Darnell, Marine Machinery Mechanic, Shop 38, Marine Machinist
“Our work may not always be in the spotlight, but it’s foundational. Our Country’s defense, our economy, and even humanitarian missions rely on well-maintained vessels. What we do at the shipyard has an impact far beyond the docks.”
Aug. 28, 2025 - Since its founding in 1891, Puget Sound Naval shipyard & Intermediate Maintenance Facility has been integral to the region, the state of Washington and the national defense. PSNS & IMF employees come to work every day ready...

Portal cranes 80, 82 and 92 receive summertime facelifts to ward off oxidation, corrosion
Romeo Aquino, painter, Code 730, Crane Maintenance, works high above the shipyard while repainting Portal Crane 92, July 31, 2025, at Puget Sound Naval Shipyard & Intermediate Maintenance Facility in Bremerton, Washington. A team of painters from Code 730 has spent the better part of the summer updating cranes 80, 82 and 92. The paints used are silicone alkyd enamel, adding a higher gloss sheen for ease of cleaning purposes, for better UV deflection which also helps slow the oxidation process down. (U.S. Navy photo by Wendy Hallmark)
Aug. 14, 2025 - A six-person team of painters is working hard throughout the short Pacific Northwest summer to repaint cranes 80, 82 and 92 at Puget Sound Naval Shipyard & Intermediate Maintenance Facility.The team of painters from Code 730,...

From Ships to Saplings: Nurturing a Legacy at Pearl Harbor
Yvonne Young, an industrial engineer at Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility waters a young ‘ulu tree, July 2, 2025. Hawaiian Regional Maintenance Center planted the young tree to commemorate the completion of an extended maintenance period on board the USS Wayne E. Meyer (DDG108). PHNSY & IMF's mission is to keep the Navy's fleet
Aug. 11, 2025 - Under the hot Hawaiian sun, two young native saplings are taking root outside of Building 167 on Joint Base Pearl Harbor-Hickam, and thanks to the watchful eye of five dedicated shipyard employees, their future looks bright...