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Erik Neal, senior vice president, WSP Maritime Division, briefs Mark Edelson, Program Executive Officer for the U.S. Navy's Shipyard Infrastructure Optimization Program, May 6, 2024, during a tour of Dry Dock 6 at Puget Sound Naval Shipyard & Intermediate Maintenance Facility in Bremerton, Washington. (U.S. Navy photo by Jeb Fach)

Dave Sweet, director, Shipyard Infrastructure Optimization Program, Program Management Office 555, leads Mark Edelson, Program Executive Officer for the U.S. Navy's Shipyard Infrastructure Optimization Program, on a tour of Dry Dock 6, May 6, 2024, during a visit to Puget Sound Naval Shipyard & Intermediate Maintenance Facility in Bremerton, Washington. (U.S. Navy photo by Jeb Fach)

Capt. JD Crinklaw, commander, Puget Sound Naval Shipyard &
Intermediate Maintenance Facility, addresses audience members Nov. 20, 2023, during a ribbon-cutting ceremony for the new substation near Dry dock 4 at the shipyard in Bremerton, Washington. (U.S. Navy photo by Jeb Fach)

Capt. JD Crinklaw, commander, Puget Sound Naval Shipyard &
Intermediate Maintenance Facility, and Capt. Brent Paul, commander, Naval Facilities Engineering Systems Command, Northwest, cut the ribbon for a new substation near Dry dock 4 at the shipyard in Bremerton, Washington, Nov. 20, 2023. (U.S. Navy photo by Jeb Fach)

The Honorable Erik Raven, Under Secretary of the Navy, and Adm. Lisa Franchetti, Vice Chief of Naval Operations, speak to mechanics in the Machine Shop, Building 431, at Puget Sound Naval Shipyard & Intermediate Maintenance Facility in Bremerton, Washington, during a tour March 29, 2023. (U.S Navy Photo by Wendy Hallmark)

The Honorable Erik Raven, Under Secretary of the Navy; Adm. Lisa Franchetti, Vice Chief of Naval Operations; and Rear Adm. Dean VanderLey, commander, Naval Facilities Engineering Systems Command, discuss ongoing construction work in the Machine Shop, Building 431, at Puget Sound Naval Shipyard & Intermediate Maintenance Facility in Bremerton, Washington, March 29, 2023. (U.S Navy Photo by Wendy Hallmark)

The Honorable Erik Raven, Under Secretary of the Navy, and Adm. Lisa Franchetti, Vice Chief of Naval Operations, discuss ongoing seismic mitigations at Dry Dock 4 at Puget Sound Naval Shipyard & Intermediate Maintenance Facility in Bremerton, Washington, March 29, 2023. Raven and Franchetti met with shipyard leadership during their visit to discuss infrastructure upgrades and work planned as part of the Shipyard Infrastructure Optimization Program, the Navy’s once-in-a-century investment to reconfigure, modernize and optimize its four aging public shipyards. (U.S Navy Photo by Wendy Hallmark)

The Honorable Erik Raven, Under Secretary of the Navy, and Adm. Lisa Franchetti, Vice Chief of Naval Operations, speak to Capt. Jip Mosman, commander, Puget Sound Naval Shipyard & Intermediate Maintenance Facility, during a tour of the Machine Shop, Building 431, March 29, 2023. (U.S Navy Photo by Wendy Hallmark)

JOINT BASE PEARL HARBOR-HICKAM, HI (March 17, 2023) Capt. Stephen Padhi, commanding officer, Officer in Charge of Construction Pearl Harbor Naval Shipyard (OICC PHNSY), salutes NAVFAC Pacific Commander Rear Adm. Jeff Kilian as Padhi assumes command March 17, 2023. The OICC team of more than 140 people will provide on-site construction oversight, accountability, technical and contracting authority over a once-in-a-generation recapitalization of PHNSY, including the historic $2.8-billion replacement of Dry Dock 3. (U.S. Navy photo by Bill Couch)

Rear Adm. Jeffrey J. Kilian (left), the commander of Naval Facilities Engineering Systems Command Pacific/Director, Fleet Civil Engineer, U.S. Pacific Fleet, briefs Brendan Owens, the assistant secretary of defense for energy, installations, and environment (ASD EI&E) and Paul D. Cramer, the principal deputy of ASD EI&E, during their visit to Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF), Feb. 1, 2023.

During the visit, Owens and Cramer met with senior leadership from PHNSY & IMF to assess progress on the Navy’s Shipyard Infrastructure Optimization Program and tour the shipyard’s dry dock areas that will be modernized beginning in 2023. The first modernization action proposes to construct and operate a new graving dry dock and waterfront production facility to support current and future classes of the nation’s nuclear-powered submarines.

Adm. Samuel Paparo (2nd from left), commander, U.S. Pacific Fleet, met with senior leadership from Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility to discuss the U.S. Navy's maintenance mission and how the shipyard keeps the fleet fit to fight in this crucial area of operations, Jan. 10, 2023. (Official U.S. Navy photo by Dave Amodo)

Adm. Samuel Paparo (center), commander, U.S. Pacific Fleet, meets with Cmdr. Jonathan B. Greenwald (left), executive officer, USS Michael Murphy (DDG 112) and Cmdr. John Holthaus (right), commanding officer, USS Michael Murphy (DDG 112), currently undergoing a maintenance availability in Dry Dock #4 of Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility, Jan. 10, 2023. (Official U.S. Navy photo by Marc Ayalin)

Chris Mason (left), project manager for the maintenance availability of USS Michael Murphy (DDG 112), provides maintenance updates to Adm. Samuel Paparo (right), commander, U.S. Pacific Fleet, Jan. 10, 2023. Paparo met with shipyard maintenance personnel from Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF), along with Sailors from Michael Murphy. (Official U.S. Navy photo by Lt. j.g. Thea Beltran)

Adm. Samuel Paparo (center), commander, U.S. Pacific Fleet, met with Sailors from USS Michael Murphy (DDG 112), currently undergoing a maintenance availability in Dry Dock #4 of Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility, Jan. 10, 2023. (Official U.S. Navy photo by Dave Amodo)

Adm. Samuel Paparo (center), commander, U.S. Pacific Fleet, met with senior leadership from Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility to discuss the U.S. Navy's maintenance mission and how the shipyard keeps the fleet fit to fight in this crucial area of operations, Jan. 10, 2023. (Official U.S. Navy photo by Marc Ayalin)

PEARL HARBOR, Hawaii (December 14, 2022) Vice Chief of Naval Operations Admiral Lisa Franchetti meets with a shipyard worker at Pearl Harbor Naval Shipyard & Intermediate Maintenance Facility (PHNSY & IMF) during a visit for an operations update and Shipyard Infrastructure Optimization Program (SIOP) tour onboard Joint Base Pearl Harbor-Hickam.

USS Cheyenne Prepares to Dock using Super Flood Basin

Super Flood Basin is Filled Supporting Docking of USS Cheyenne

JOINT BASE PEARL HARBOR HICKAM, Hawaii (February 27, 2022)- Secretary of the Navy Carlos Del Toro looks at the proposed Dry Dock 5 site at Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility. The Shipyard Infrastructure Optimization Program will support future Virginia-class submarine maintenance and optimize work across the shipyard. Secretary Del Toro is in Hawaii to meet with families and senior officials and to see first-hand the progress that has been made in restoring and protecting the island’s safe drinking water. (U.S. Navy photo by Dave Amodo/Released)

JOINT BASE PEARL HARBOR HICKAM, Hawaii (February 27, 2022) - Secretary of the Navy Carlos Del Toro visits Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility (PHNSY & IMF) to discuss the Shipyard Infrastructure Optimization Program. Left to right: Rear Adm. Dean VanderLey, Commander, NAVFAC Pacific, Mr. Ralph Okimoto-Rivera, Director Radiological Controls, PHNSY & IMF, The Honorable Mr. John P “Sean” Coffey, General Counsel, Department of the Navy, The Honorable Carlos Del Toro, Secretary of the Navy, Capt. Richard Jones, Commander, PHNSY & IMF, Mr. John Ornellas, Senior Executive Service and Nuclear Engineering & Planning Manager, PHNSY & IMF, and Master Chief Charles K. Parsons, Jr., Acting Command Master Chief, PHNSY & IMF. Secretary Del Toro is in Hawaii to meet with families and senior officials and to see first-hand the progress that has been made in restoring and protecting the island’s safe drinking water. (U.S. Navy photo by Dave Amodo/Released)

Portsmouth Naval Shipyard, Kittery, ME: Jun 22, 2021: USS Virginia (SSN 774) successfully exits dry dock at the shipyard. Virginia is at the shipyard for a scheduled maintenance period.

Portsmouth Naval Shipyard, Kittery, Maine, July 7, 2021: Deputy Secretary of Defense Dr. Kathleen Hicks visited the shipyard.

Vice Chief of Naval Operations Adm. William Lescher visited Puget Sound Naval Shipyard & Intermediate Maintenance Facility, in Bremerton, Washington, April 27, 2021, to tour PSNS & IMF facilities and to discuss how the Public Shipyard Improvement Plan and the Shipyard Infrastructure Optimization Program will empower PSNS & IMF to fully support the Navy the nation needs. (PSNS & IMF photo by Scott Hansen)

Line handlers stand at the ready to moor the Los Angeles-class attack submarine USS Miami (SSN 755) as the boat arrives at Portsmouth Naval Shipyard to begin an engineered overhaul period.

he Ohio-class ballistic missile submarine USS Henry M. Jackson (SSBN 730) is in dry-dock as the Intermediate Maintenance Facility conducts extensive maintenance, upgrades and refurbishments to extend the life of the boat.

he aircraft carrier USS George H.W. Bush (CVN 77) sits in a dry dock, Feb. 26, 2019, at Norfolk Naval Shipyard (NNSY) in Portsmouth, Virginia during a docking planned incremental availability.

In this file photo provided by the U.S. Naval Historical Center taken in November 1910, a floating crane from Norfolk Naval Shipyard lifts a Curtiss Model D biplane to the deck of the Chester-class cruiser USS Birmingham (CL 2). Civilian aviator Eugene B. Ely flew the plane off Birmingham on Nov. 14, 1910, the first aircraft launch from a warship.

Hull Maintenance Technician Fireman Keriyate Lewis, from New Iberia, La., welds a metal brace aboard the aircraft carrier USS Dwight D. Eisenhower (CVN 69).

prototype hull-climbing robot conducts its first test on an actual vessel, the Seawolf-class attack submarine USS Connecticut (SSN 22), in dry dock at Puget Sound Naval Shipyard and Intermediate Maintenance Facility (PSNS & IMF).

Aviation Electronics Technician 3rd Class Brittany Collins, from Chicago, cleans a ventilation system aboard the aircraft carrier USS George H.W. Bush (CVN 77). GHWB is currently in Norfolk Naval Shipyard for its Docking Planned Incremental Availability (DPIA).

Aviation Boatswain's Mate (Fuel) Samuel Green, from Bellflower, California, removes deck material aboard the aircraft carrier USS George H.W. Bush (CVN 77).

Hull Maintenance Technician 3rd Class Zachary Mayer, from Madison, Wisconsin, grinds a bolt aboard the aircraft carrier USS George H.W. Bush (CVN 77).

Rear Adm. Stephen Evans, left, commander of Carrier Strike Group 2 (CSG 2) and Rear Adm. Sara A. Joyner, right, take a tour of the aircraft carrier USS George H.W. Bush (CVN 77).

The Virginia-class fast-attack submarine USS Missouri (SSN 780) departs Pearl Harbor Naval Shipyard after completing a scheduled extended dry-docking selected restricted availability (EDSRA).

The Virginia-class attack submarine USS New Hampshire (SSN 778) is turned by tug boats before mooring pierside at Portsmouth Naval Shipyard (PNS).

he Los Angeles-class fast-attack submarine USS Olympia (SSN 717) arrives at Puget Sound Naval Shipyard for a port visit.

Puget Sound Naval Shipyard and Intermediate Maintenance Facility (PSNS&IMF) and Norfolk Naval Shipyard (NNSY) partnered to bring laser scanning technology to America's Shipyard.

Norfolk Naval Shipyard (NNSY) held a groundbreaking for its new production training facility July 1, which will consolidate training currently spread across 26 different NNSY locations and eight departments into a single 157,000 square-foot, $64.7 million dollar facility. Participants in the groundbreaking, from left to right, are: Danielle Beamon, NNSY Acting Code 900 Training Group Superintendent; Craig Shadle, RQ Construction, LLC, Project Executive; Congressman Bobby Scott, 3rd Congressional District of Virginia; Captain Kai Torkelson, Shipyard Commander; David Wickersham, aide to Congresswoman Elaine Luria, 2nd Congressional District of Virginia; Commander Ben Wainwright, Naval Facilities Engineering Command Public Works Officer; Robert Fogel, Shipyard Infrastructure Optimization Project Superintendent; Chakeita Dickson, NNSY Command University Leadership Development Branch Head.

Brendon Wilkins and Matthew Perkinson from Norfolk Naval Shipyard's Technology and Innovation (T&I) Lab, work on a 3-D printer.

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WENDOVER FIELD, Utah – Casings for the "Thin Man" plutonium gun design weapons being developed during the Manhattan Project as part of Project Alberta at Wendover Field, Utah (additional "Fat Man" test casings can be seen in the background as well). The plutonium gun design was eventually abandoned as infeasible, as the spontaneous fission rate of reactor-bred plutonium was much higher than expected.

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Dahlgren and the creation of the atomic bomb

WENDOVER FIELD, Utah – Casings for the "Thin Man" plutonium gun design weapons being developed during the Manhattan Project as part of Project Alberta at Wendover Field, Utah (additional "Fat Man" test casings can be seen in the background as well). The plutonium gun design was eventually abandoned as infeasible, as the spontaneous fission rate of reactor-bred plutonium was much higher than expected.

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Tags: ordnance, World War II, atomic bomb, Dahlgren, William “Deak” Parsons

Photo by: Historical photo | VIRIN: 250815-N-DE005-1002.JPG

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