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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.



Navy Shipyards

Shipyard News

Navy, Hawaii honor dry dock construction start with traditional blessing
Kahu Kordell Kekoa, right, performs a traditional Hawaiian oli (chant) to bless the land, asking for protection and to foster good energy, as the Navy begins construction on a new dry dock at Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF) Aug. 19, 2023. The construction of the dry dock, currently the Navy’s largest facilities construction project in history, will be the first since World War II. PHNSY & IMF’s mission is to repair, maintain, and modernize Navy fast-attack submarines and surface ships, in order to keep the Navy’s fleet “Fit to Fight.” (U.S. Navy photo by Justice Vannatta)
Sept. 25, 2023 - The Navy started construction on Dry Dock 5 at Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF), Aug. 19, 2023, with a small Hawaiian blessing...

Longtime Shop 51 electrician builds a lasting legacy
Larry Cramer, electrician, Shop 51, Electricians, began his 36-year career at PSNS & IMF since 1987. That career came to a close Aug. 31, 2023, when he
Sept. 19, 2023 - In his 36 years working for Shop 51, Electricians, at the Puget Sound Naval Shipyard & Intermediate Maintenance Facility, Larry Cramer, electrician, has seen a massive amount of change.Cramer has seen 13 shipyard commanders...

NSS-SY Spotlight: Engineering Pillar -- Isolating firemain piping on aircraft carriers with freeze seals helps accomplish work faster, safer
NSS-SY Spotlight: Engineering Pillar graphic (U.S. Navy graphic by Scott Hansen)
Sept. 14, 2023 - In direct alignment with the U.S. Navy’s “Get Real, Get Better,” initiative, the Naval Sustainment System-Shipyards’ (NSS-SY) Engineering Pillar is promoting ways to accomplish work faster, safer and with the highest quality...

PSNS & IMF joins the Navy and the nation in recognizing the many contributions of Hispanic and Latinx Americans
Sept. 12, 2023 - The history of America is a history of diversity. The fabric of our nation is woven with threads of diverse communities, cultures, experiences and perspectives. The national observance months we celebrate throughout the year...

PHNSY & IMF Apprentice Program Celebrates its 103rd Year Anniversary
Sept. 7, 2023 - The Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF) Apprentice Program is in its 103rd year of supporting our shipyard and keeping our fleet, “Fit to Fight.”...