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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

Nuclear Welder Earns Prestigious George S.B. Walters Shipyard Service Award
JOINT BASE PEARL HARBOR-HICKAM, Hawaii — From left, Stephen Umeno, a nuclear welder, strikes an arc in the weld booth (behind the curtain) during a welding training qualification with Brad Morikawa, right, the nuclear welder supervisor, observing his technique in a Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility weld shop Jan. 30, 2026.

Nuclear welders are highly skilled tradespeople who specialize in fusing metals to maintain the integrity of critical naval systems. The critical work of a nuclear welder begins with methodical preparation, whether setting up a weld booth or a jobsite, they are continuously training, obtaining and maintaining certifications to be operate a peak performance.

PHNSY & IMF’s mission is to keep the Navy’s fleet “Fit to Fight
Feb. 27, 2026 - A Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility nuclear welder was honored with the 2025 George S. B. Walters Service Award by the Honolulu Council of the Navy League of the United States for his...

Code 1120 leader named NCMA 'Manager of the Year'
The Naval Civilian Managers Association has named Kristen Marion, director of security, Code 1120, Security, as the Puget Sound Naval Shipyard & Intermediate Maintenance Facility NCMA “Manager of the Year” for 2025.
Feb. 12, 2026 - The Naval Civilian Managers Association has named Kristen Marion, director of security, Code 1120, Security, as the Puget Sound Naval Shipyard & Intermediate Maintenance Facility NCMA “Manager of the Year” for 2025, according...

Shop 26 leader honored for his 'commitment to excellence'
The National Association of Superintendents has selected Steve Dibert, welding superintendent, Shop 26, Welders, as its 2025 Superintendent of the Year, at Puget Sound Naval Shipyard & Intermediate Maintenance Facility in Bremerton, Washington.
Feb. 4, 2026 - The National Association of Superintendents has selected Steve Dibert as its 2025 Superintendent of the Year, according to a recent NAS announcement. Dibert, welding superintendent, Shop 26, Welders, was selected for his...