Naval Sea Systems Command



Portsmouth Naval Shipyard


Proud of our past ... Ready for the future

Portsmouth Naval Shipyard's primary mission is the overhaul, repair and modernization of Los Angeles-class submarines. Portsmouth Naval Shipyard provides the U.S. Navy's nuclear powered submarine fleet with quality overhaul work in a safe, timely and affordable manner. This includes a full spectrum of in-house support--from engineering services and production shops, to unique capabilities and facilities, to off-site support--all of which serves the multifaceted assortment of fleet requirements.

Mission: We are Portsmouth. Together we are honor bound to support and defend the Constitution of the United States. We do so proudly by maintaining, repairing and modernizing our Navy’s submarines so that they can go in harm’s way, defeat our enemies in war and return their crews home safely.

Vision: People love to work at Portsmouth. Their passion, dedication, innovation and unified effort ensure we will always be the Navy’s Center of Excellence for submarine maintenance.

Values: We define Portsmouth every day through our service. With this service comes great responsibility; to our families, to each other, to our heritage, and to our Nation. We meet these responsibilities by living up to the values embodied in our Declaration of Excellence and the Navy’s core values of honor, courage, and commitment.  

Official website of Portsmouth Naval Shipyard

Military Members and Families relocating to Portsmouth Naval Shipyard
The Portsmouth Naval Shipyard Team extends a warm welcome to our military and their families. We are proud of your service and we are dedicated to providing you a full range of quality support services from housing to child care. Please click on the link above for more information regarding the range of programs available at Portsmouth Naval Shipyard.
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Shipyard Safety Program PNS VPP LogoAt Portsmouth Naval Shipyard safety is the highest priority. The Shipyard implemented the Occupational Safety and Health Administration's Voluntary Protection Program (VPP). The program encourages active union, management and employee participation in safety initiatives. Portsmouth Naval Shipyard has been recertified as a VPP "Star" Site and was the first Navy activity to be so honored. The Shipyard has introduced the VPP Passport Program and continues to promote safety both on and off the worksite.


Memorial honors those lost at sea

Squalus MemorialDisaster struck on May 23, 1939 when the Portsmouth submarine, USS Squalus (SS 192) sank off the Isles of Shoals during sea trials (approximately 12 miles from the shipyard) in 240 feet of water because the main induction valve failed to close. USS Sculpin (SS 191), a sister ship of Squalus, located Squalus on the bottom and rescue vessels and workers began to pour in from Boston, New London, and Washington. The McCann Rescue Chamber was rushed from New London and the first of the survivors were brought to the surface on May 24. After several attempts and much trouble, Squalus was finally raised on September 13 and towed to the shipyard. She was put out of commission two months later, rebuilt and recommissioned as USS Sailfish just a year after she had sunk. The bridge and conning tower of Sailfish (shown here) are now at the shipyard as a memorial to the 26 officers and men lost on Squalus. For more shipyard history, click on our history link on this page.

Portsmouth Naval Shipyard's Commitment to the Environment

Portsmouth Naval Shipyard recognizes that all of the services that it provides to Navy vessels can cause impacts on the environment and the impacts must be managed and minimized as much as economically feasible. The shipyard is committed to being a leader in environmental management. The shipyard will accomplish this by promoting a culture in which each employee is aware of the potential environmental impacts of their work and their continuous responsibility to reduce those impacts, continuously evaluating and maintaining compliance with all regulatory requirements that it is subject to, and setting and maintaining specific objectives to continuously improve shipyard operations in the most cost effective manner using pollution prevention and conservation efforts.

Click here to read the Shipyard Environmental Policy.




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The next meeting of the Portsmouth Naval Shipyard Restoration Advisory Board (RAB) will be Tuesday, June 14 beginning at 7 pm at the Kittery Community Center, 120 Rogers Rd. Kittery, Maine. The meeting is open to the public for discussion and updates on the Environmental Restoration Program activities at the shipyard.
"Diversity is a source of strength for the Navy, and is [a] key component to maintaining our highest state of readiness," said a Navy spokesperson. "Diversity encompasses more than race and gender -- we seek to include diversity of thought, background, language, culture and skills as well. Our force comes from a diverse populous, and we are simply better at what we do when we are more diverse. We want individuals to serve who are right for the job regardless of race, gender, sexual orientation, and creed. Our goal is to ensure that the mission is carried out by the best-qualified and the most capable service members."
Great job by PNSY volunteers!
Here's some highlights from the USS THRESHER 53RD MEMORIAL SERVICE.
May 18, 2016. Kittery, Maine: USS Hampton (SSN 767) arrives at Portsmouth Naval Shipyard to begin a scheduled Engineered Overhaul. As a field activity of NAVSEA, Portsmouth Naval Shipyard is the Navy's center of excellence for fast-attack submarine maintenance, modernization, and repair. PNSY is committed to maximizing the material readiness of the fleet by safely delivering first time quality, on-budget, and on time. (U.S. Navy photo by Jim Cleveland/Released)
This week we celebrate USS ARCHER-FISH (SS 311), built here at Portsmouth and launched May 28, 1943. ARCHER-FISH was one of the 77 submarines we built during WWII. She completed seven war patrols, but it was her fifth patrol that cemented her legacy. In November 1944, ARCHER-FISH spotted what was originally thought to be a massive oil tanker. Upon closer inspection it was discovered the ship did not match any of the intelligence photos of any known Japanese vessels and would later be identified as the Imperial Japanese Navy's secret super-carrier, SHINANO. Originally built as a sister ship to the giant YAMATO-Class battleship, SHINANO was converted to an aircraft carrier after Japan lost four front-line carriers at the Battle of Midway. SHINANO was the largest carrier ever built at the time and was carrying 50 kamikaze flying bombs. ARCHER-FISH intercepted SHINANO on her maiden voyage as the ship left Tokyo Bay. The American sub was wary of the three destroyers screening the super-warship as she maneuvered to get into firing position. SHINANO was traveling in a zig-zag course, making it difficult for the sub to get a firing solution for a torpedo attack. About 3:00 am on November 29, ARCHER-FISH submerged in preparations to mount her assault, and quickly had to lower her scope as a Japanese destroyer passed directly over her. SHINANO executed another zig-zag, turning towards ARCHER-FISH and exposing her broadside to the sub. ARCHER-FISH fired six torpedoes with four hitting their mark, exploding just 10 feet below the waterline. SHINANO began to list almost immediately but continued to limp on her way as the carrier's captain believed his vessel to be unsinkable. SHINANO continued to list despite counter flooding attempts, and after several hours finally sunk to the depths below. It wasn't until after the end of the war that the Japanese carrier was identified as the massive SHINANO, and for this engagement, ARCHER-FISH received a Presidential Unit Citation. To this day, SHINANO is notably the largest warship ever sunk by a submarine ... ARCHER-FISH is just one of the many reasons why I like to say, Portsmouth work makes history! --excerpt from Shipyard Commander, CAPT William Greene's all hands message. (image of painting by Donald Demers)
Two teams sponsored by Portsmouth Naval Shipyard show off their FIRST Robotics creations. FIRST is just one of many events supported by the shipyard's Outreach Team in an effort to inspire students to pursue careers in science, technology, engineering and math (STEM) fields.
Great job Team PNSY for winning the Bike/Walk to Work Week Corporate Challenge!
Bravo zulu to the three SMART Scholarship recipients (one not listed in the article) who will be coming to Portsmouth Naval Shipyard in 2017! We look forward to welcoming you the the Navy's center of excellence for attack submarine maintenance, repair and modernization.
Welcome to Portsmouth Naval Shipyard USS Hampton (SSN 767)!
Bill Green's Maine meets CAPT Bill Greene's shipyard. As a technically driven organization we can appreciate a good math joke. Thanks Bill Green's Maine for sharing this (Bill Green)²+e moment!
Bike/Walk to Work Week runs from May 16-20 and kicks off the Corporate Commuter Challenge. Team PNSY, the three time defending champion, is committed to helping reduce our carbon footprint. Team PNSY is always looking for more shipyarders to ride with them into work. For those who are interested, log on to to register and track your mileage.
On May 7, more than 20 volunteers from Portsmouth Naval Shipyard participated in the 2016 Expanding Your Horizons conference held at Stratham Cooperative Middle School. The event, designed for girls grades 6-8, seeks to inspire girls to recognize their potential and pursue future opportunities in STEM career fields. The shipyard volunteers facilitated more than a dozen different workshops including Mechanical Dissection, The Science of Ice Cream, Chocolate Asphalt, Flinking, Lil' Bits, Virtual Welding amd Making Paper. Hats off to our Outrach Team for another great event!
ICYMI Pre-Commissioning Unit (PCU) Manchester, named after the largest city in New Hampshire, was christened May 7 as the 14th littotal combat ship (LCS). PCU Manchester is expected to launch later this month at Austal USA in Alabama and scheduled for delivery in 2017.
Bravo Zulu to Volunteers from Chaplain Underhile: "On April 20 and 21, Sailors from USS Annapolis (SSN 760), USS Providence (SSN 719), and SUBLANT, assembled together at the Thresher Memorial Chapel to install name plaques for the 129 Sailors and shipyard civilians who perished aboard USS Thresher (SSN 593) on April 10, 1963. Whenever parishioners sit in the chapel pews where the plaques are installed, they will be reminded of that one individual and his sacrifice for the nation. The Thresher Memorial Chapel serves as a true memorial for each individual on eternal patrol." Group Photo: Front Row (L to R)—STS3 Drew Skinner (USS Annapolis), STS3 Jon-Robert Williams (USS Providence), MMN3 Brandon Stevens (USS Annapolis), ETR3 James Scroggins (USS Annapolis), ET3 Sam Fox (SUBLANT) Second Row (L to R)—MMN2 Willie Brown (SUBLANT), LT Ian Underhile (PNSY), FTSN Brooks Wolfe (USS Annapolis), FTSN Andrew Vargas (USS Annapolis), STS2 Edwin Deguzman (USS Annapolis), Steve Watson (Shipyard Museum Volunteer) Third Row—STS3 Derek Noon (USS Providence) Not Pictured—ETN2 Josh Wells (USS Annapolis), EMN1 Josh Miller (SUBLANT)
Bravo Zulu to PNSY's Outreach Team for showing kids that STEM concepts can be fun (and tasty)!

Portsmouth Naval Shipyard
Portsmouth, NH  03804-5000
Tel:  207-438-1000

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