Fellow Shipbuilders,
Today we commemorate the 60th anniversary of the loss of the USS Thresher after an extended post shakedown availability at Portsmouth Naval Shipyard. On this day in 1963, 129 men lost their lives; 129 families lost a son, a father, a brother. As a result of that tragedy, three generations of descendants wonder what could have been, and how many siblings, children and grandchildren never were. We also wonder what those men would have continued to contribute to this nation, if they had the chance.
On Tuesday, April 9, 1963, USS Thresher was gently pushed her from her berth at Portsmouth Naval Shipyard. On shore, children of the crew sitting on their mom’s laps honked and waved from parked cars as they watched her departure, having just said their goodbyes and looking forward to seeing their dads in two days, just in time for Easter egg hunts and a family feast.
On board Thresher, as she progressed to the dive point overnight and into the next morning, a series of shallow dives were conducted to ready the crew for the dive to test depth. 220 miles off shore on the morning of the 10th, Thresher had reached the continental shelf and was ready to dive in 8,400 feet of ocean. As her escort ship USS Skylark stood by, LT CDR John Wesley Harvey ordered the ship to submerge and the bow slipped beneath the surface of the ocean. All was well as Thresher gradually dove in 100-foot increments. Routine messages were relayed between Skylark and Thresher as she proceeded to the depths. Then, unexpectedly, a message from Thresher—“Experiencing minor difficulties, have positive up angle, am attempting to blow”—was received, followed by additional garbled transmissions. At approximately 9:18 a.m., Thresher was lost.
We will never know for sure what occurred that day, but it is suspected that one or more brazed seawater pipe joints failed; access to vital equipment was blocked hindering ability to isolate the flooding; salt spray on electric panels caused them to short out; loss of those electrical panels caused the plant to shut down, and without the plant, loss of propulsion; emergency measures were taken, but moisture in the emergency main ballast tank blow system likely caused airways to restrict and freeze over and become blocked, hence preventing lifesaving air to fill the ballast tanks and the ship from returning to the surface with its only remaining recovery system.
Out of this tragedy came volumes of lessons learned, changes in perspective, new design and operating requirements and a culture of excellence that still exists today. Out of this tragedy, the SUBSAFE program was born—the first of three Special Emphasis Programs (SEPs) whose sole purpose is to protect the platform and its crews from avoidable risks on an already dangerous mission. As a result, no SUBSAFE-certified submarine has ever been lost. As our previous Electric Boat president, John Casey, many times said, “We send our one and only product, a U.S. Navy nuclear submarine, “into an environment that otherwise would not sustain human life and expect it to return every time.” The Special Emphasis Programs (SUBSAFE, DSS-SOC and Fly-by-Wire) have assured just that.
One of our EB-built boats, the USS Hartford in our yard right now, is an example of that success. As many of you know, Hartford survived a terrible collision in the Straits of Hormuz in 2009, and brought each of her sailors home to their families—and it’s because of our adherence to design requirements, rigorous engineering standards, proper training, mentoring and supervision, the drive for first-time quality, detailed inspections, testing and certification documentation—that we can continue to ensure the excellent performance of our products. Each time Electric Boat sends a ship to sea, whether it be a newly constructed ship or a ship we have in for maintenance, I proudly provide the Electric Boat SEP certification, with extreme confidence that the ship is safe to go to sea “into an environment that otherwise would not sustain human life,” and I do that on behalf of the work accomplished by the men and women of Electric Boat. That extreme confidence cannot, can never, be allowed to evolve into a culture of arrogance based on previous success. Our duty and responsibility to those 129 lost souls on USS Thresher is to never allow that to happen again.
The SUBSAFE culture of excellence cannot be allowed to become fragile. We live in a day-to-day world where facts are ignored or revised, consequences aren’t clear, threats aren’t recognized, reality is corrupted by social media, and if it’s not streaming on your phone, it’s not important. I’ll tell you this—that cannot be the culture inside our gates. The fact is, there are existential threats out there, and consequences to our nation if we can’t deliver our ships so that they can perform their mission to protect us. We owe it to our sailors to build our ships, with velocity (that’s speed with solid foundational direction) to rigorous standards with first-time quality, so they remain safe and can continue to trust their ship will perform as designed, allowing them to focus on their mission.
Commemoration of this event is a remembrance of who those 129 souls were—a remembrance of the impact that day had on their families and the U.S. Navy—and a remembrance of the first nuclear submarine lost. Sixty years ago is beyond the memories of most Americans, in fact, those that actually remember that day are very rare. Many of us have seen tragedy and know how tragedy impacts us personally and directly, but time takes its toll. Some remember the loss of the Space Shuttle Challenger and the horror on the faces of the families and students there to celebrate the milestone launch of the first teacher into space; more remember the loss of Space Shuttle Columbia and the streaking of debris across the sky; and even more so 9/11, 22 years ago already. Many of the folks coming in our gates today were not yet born when that happened. As the years progress on, the pain becomes distant, the memories fade, the first-hand witnesses are gone, new generations mature, and we become vulnerable to tragedy again, maybe because of ignorance, maybe its arrogance or maybe its complacency.
Our challenge here is to turn up the gain on the consequences of not getting it right, because there are consequences if we don’t maintain our diligence. We must fight the three enemies of our Special Emphasis Programs—ignorance, arrogance and complacency—so that they find no path into our submarines. These enemies are always poised to attack and are always looking to find a way in, just like the pressure of the sea is always trying to find a way in. I ask you all to join me in this fight, to maintain our rigorous standards, to teach those that need to learn and to never assume that it doesn’t matter if a step was missed or that a requirement was not met. Don’t let the enemies in our gates. We owe it to those 129 men that we’ll maintain the watch on ship safety and first-time quality and will keep today’s sailors safe so that they can in turn protect us and our great nation.
I’ll close with words from Vice Admiral Grenfell, then Commander Submarine Force, United States Atlantic Fleet. “They are remembered not as men who were, but as men who are; who because of their profession of the undersea, have given us greater knowledge of its mysteries and opened broader paths for its exploration and use.”
Please go forth and achieve excellence in the work you do today and every day.
Thank you.
Stephen C. Kirkup
Director, Quality Assurance and Special Emphasis Programs
Safety Update: Installation of Speed Tables on Eastern Point Road
In an effort to increase safety at Electric Boat’s Groton shipyard, two speed tables are being installed across Eastern Point Road this week. The tables, a few inches tall and marked with yellow stripes, are designed to slow vehicle traffic in an area frequented by pedestrians. The first speed table crosses Eastern Point Road just...Continue reading→
EB firefighters recognized for life-saving rescues
Five members of the Electric Boat Fire Department in Groton were recognized for perilous, life-saving rescues during a pair of multi-alarm fires that engulfed apartments in Groton and New London in 2025. Firefighters Thomas Gugliotti, Arthur Keaten, Theodore Bartkoski, James Brady and Capt. Ryan Boulanger were each presented with Lifesaving Awards and the prestigious 2026...Continue reading→
The Barnacle: Parking Enforcement That Sticks
Meet the Barnacle, Electric Boat’s newest parking-enforcement tool that will begin deployment in the Groton shipyard starting Monday, June 15. As our enterprise continues to grow, we are dedicated to ensuring parking is safe, fair and accessible to all. The Barnacle is an immobilizing parking-enforcement device that attaches directly to a vehicle’s windshield using heavy-duty,...Continue reading→
Honoring the U.S. Army Birthday
June 14th marks the 251st Birthday of the United States Army, a moment to honor the enduring legacy, bravery, and sacrifice of those who have worn the Army uniform since 1775. As the oldest branch of the U.S. military, the Army has played a vital role in shaping our nation’s history and safeguarding its freedoms....Continue reading→
Rayha Report Ep. 20: 2026 EB Signing Days
Electric Boat held recent Signing Day ceremonies at Cranston West High School on May 21 and the Garde Arts Center in New London on May 28. EB President Mark Rayha spoke with students about their decision to join EB and educators who prepare their students for careers in shipbuilding. Click here to see the latest installment of the Rayha...Continue reading→
Save the Date: CT Health Fairs Kick Off June 9
A Message From Dan Vieira and Kathleen Heller At EB, Safety and Wellness go far beyond meeting basic compliance standards. Our focus is on building a culture where employees can thrive in every aspect of their lives. Prioritizing wellbeing is vital to being our best on the job and at home with our families. ...Continue reading→
Supporting Our Neighbors Impacted by The Ledges Apartments Fire
Early Sunday morning, a devastating fire occurred at The Ledges Apartments in Groton. Eighteen fire departments, including Electric Boat’s, responded. Thanks to the heroism of these first responders no residents were injured. The fire did, however, displace more than approximately 50 residents and destroyed or damaged 44 units in the building. Several EB employees were...Continue reading→
Pride Month Celebrations at Electric Boat
June 1st marks the start of Pride Month, a time for millions of LGBTQ+ individuals and allies around the world to come together in celebration and reflection. From film festivals and art shows, to marches and concerts, Pride is a vibrant tribute to LGBTQ+ culture, history and the relentless spirit of activism. It’s a chance...Continue reading→
Celebrating Our Next Generation of Shipbuilders
The Next Generation of Shipbuilders Takes the Stage Over the past two weeks, Electric Boat welcomed the next generation of shipbuilders at our Rhode Island and Connecticut Signing Day celebrations, marking the beginning of a journey that will help shape the future of our company and our nation’s defense. Held at Cranston High School West...Continue reading→
Update: Gold Star Bridge Project – Upcoming Traffic Impacts
CT DOT is preparing to enter the next major phase of the Gold Star Memorial Bridge Rehabilitation Project, and employees should expect new traffic patterns that may affect travel to and from EB’s Groton and New London facilities. A crossover will direct two northbound lanes onto the southbound bridge, as shown in this CT DOT...Continue reading→
