Pacific Fleet Submarine Museum Monthly E-Newsletter – August 2025

Marking the Anniversary of the End of World War II and the Impact of U.S. Submarine Warfare

September 2nd marks the 80th anniversary of the end of World War II, a moment when the largest global conflict in history came to an end and eventually brought home thousands of American service members after years of brutal combat. September 2nd marks the 80th anniversary of the end of World War II, a moment when the largest global conflict in history came to an end and eventually brought home thousands of American service members after years of brutal combat.

Throughout World War II, submarines played a critical role in the Pacific, especially as the U.S. Navy reeled from the devastation of Pearl Harbor. With much of the battle fleet destroyed or damaged, submarines became one of the few American forces immediately capable of striking back at Japan. Operating from forward bases such as Pearl Harbor, Manila, and later Fremantle and Brisbane, submarines conducted aggressive patrols against Japanese shipping, gathering vital intelligence, and disrupting enemy supply lines. Though plagued at first by faulty torpedoes, submarines still represented a stealthy and persistent threat to Japan’s sprawling Pacific operations. Their ability to penetrate deep into enemy-controlled waters and attack with surprise helped offset the temporary loss of surface superiority, bought time for American rearmament, and set the stage for the broader submarine campaign that would ultimately strangle Japan’s maritime lifelines.

Submarine warfare in World War II evolved from a limited, often experimental effort into one of the most decisive naval strategies of the conflict. At the start of the war, many navies, including the U.S., faced problems with doctrine, unreliable torpedoes, and restrictive rules of engagement. Early submarine operations were cautious and primarily focused on reconnaissance or fleet support. As the war progressed, however, submarine forces shifted to an aggressive commerce-raiding strategy that targeted enemy shipping with devastating effect. Improved tactics, better coordination with intelligence sources such as codebreaking, and advances in technology like radar, sonar, and more effective torpedoes dramatically increased their effectiveness. Although they comprised less than two percent of the U.S. Navy’s personnel, submariners were responsible for destroying 30 percent of the Imperial Japanese Navy fleet during World War II, including eight aircraft carriers, 11 cruisers and a battleship. They also destroyed 60 percent of the Japanese merchant fleet, cutting off crucial supplies to its military forces in the Pacific.

As for the impact made by the U.S. Submarine Force: “If it wasn’t for the bravery and ingenuity of the U.S. Submarine Force, offensive operations in the Pacific would have been significantly delayed, setting the stage to recapture additional territory at the cost of more American military casualties. The history of World War II demonstrated the submarine’s transition from a secondary naval arm to a central weapon of strategic warfare.” said Pacific Fleet Submarine Museum executive director Andrew “Homer” Ring.

The toll among the U.S. Submarine Force, however, was costly. About 20 percent of the American forces were lost, including 52 submarines with a total of 3,506 officers and enlisted men killed. Their bravery and sacrifices are etched in naval history and in the freedoms their service helped protect.

“The anniversary of the conclusion of World War II serves as a tribute to the strength and sacrifice of American service members and workers who participated in our nation’s war effort,” Ring said. “A heartfelt thank you goes out to the Greatest Generation on this 80th anniversary as we celebrate the spirit of freedom and resilience that defines our nation.” Read about Bowfin history HERE.

What’s Inside

Relatives of Bowfin Crewmember Visit Museum
National Nonprofit Day

Read full Newsletter HERE.

Newest chief of naval operations assumes responsibilities

Military Times | August 25, 2025

Adm. Daryl Caudle assumes duties as the 34th chief of naval operations during an assumption of office ceremony at the Washington Navy Yard in Washington, D.C., on Aug. 25.

The U.S. Navy confirmed the 34th chief of naval operations during an assumption of office ceremony Monday, according to a Navy release.

Adm. Daryl Caudle, who previously led U.S. Fleet Forces Command for nearly four years, replaced acting CNO Adm. James Kilby at an event at the Washington Navy Yard in Washington, D.C. Kilby took over for Adm. Lisa Franchetti, whom President Trump dismissed in February without a stated reason.

“The Sailor will be front and center in my vision throughout my tenure as CNO — hands down, no exception,” Caudle said during the ceremony, according to the release. “To ensure that they are ready to fight and win decisively–today, tomorrow and well into the future — we will view everything we do we through an operational lens focused on three priorities: the foundry, the fleet and the way we fight.” Read More.

The Periscope August 2025

The Periscope is a monthly publication of the Los Angeles-Pasadena Base of USSVI.

What’s Inside
General Meeting Minutes
Tolling the Boats
New Twin-Sonar Dome
U.S. Unleashes First UUV
F-1 Seen Intact Off San Diego
New USSVI Challenge Coins
New Batfish Sailor Book
Dex Armstrong
Chapter News
Calendar Events

Read full newsletter HERE.

Pacific Fleet Submarine Museum Monthly E-Newsletter – July 2025

In a concerted effort to get more students involved in the local trade industry, over 100 high school students from Honolulu Community College’s Summer CTE Academy visited the Pacific Fleet Submarine Museum earlier this month to wrap up their five-week summer program. Read full story HERE.

What’s Inside

Collections Spotlight: Frank Joseph Unger
Make the Most of the Final Days of Summer

Read full Newsletter HERE.

Trump’s pick for CNO faces few hurdles in confirmation hearing

Military Times | July 25, 2025

Adm. Daryl Caudle, shown here on April 7, 2023, delivered prepared remarks and answered lawmakers’ questions during a confirmation hearing Thursday.

President Donald Trump’s nominee for the next chief of naval operations faced no major opposition during his confirmation hearing Thursday before the Senate Armed Services Committee.

Adm. Daryl Caudle, who currently leads U.S. Fleet Forces Command, delivered prepared remarks and answered lawmakers’ questions.

In his opening statement, Caudle described the United States at an inflection point.

“Our country and its citizens are in the midst of a crucial era, defined by global competition, technological saturation, and unpredictable threats that challenge our American dream,” Caudle told lawmakers.

Read full story HERE.

USS Toledo Arrives at Joint Base Pearl Harbor-Hickam

SEAPOWER | July 16, 2025

JOINT BASE PEARL HARBOR-HICKAM, Hawaii (July 12, 2025) – Los Angeles-class fast-attack submarine USS Toledo (SSN 769) arrives at Joint Base Pearl Harbor-Hickam during its change of homeport, July 12, 2025. (U.S. Navy photo by Mass Communication Specialist 1st Class Scott Barnes) 

The Los Angeles-class fast-attack submarine USS Toledo (SSN 769) arrived at its new homeport of Joint Base Pearl Harbor-Hickam, from its previous homeport of Portsmouth, Virginia, July 12, 2025. The Toledo joined Submarine Squadron 7 as their fourth Los Angeles-class fast-attack submarine.

“Our crew is excited to finally arrive in Pearl Harbor after completing an important maintenance period in Hampton Roads,” said Cmdr. Dustin Kraemer, commanding officer of the Toledo. “Our crew looks forward to the new chapter for Toledo and the opportunities while operating throughout the Indo-Pacific.”

Capt. Corey Poorman, commander, Submarine Squadron 7, met the Toledo pierside upon arrival to welcome the crew to the island. “The Squadron 7 Ohana enthusiastically welcomes the crew and families of the Toledo with Hawaii’s enriched culture and spirit of aloha,” said Poorman. “Our team looks forward to continuing the training and certification of Toledo’s crew in defense of our nation and its allies and partners.” 

Full Story HERE

Submarine USS Connecticut Severely Damaged In Pacific Crash To Return To Service In 2026

TWZ | July 15, 2025

USS Connecticut (SSN 22) is docked for its Extended Docking Selected Restricted Availability July 12 at Puget Sound Naval Shipyard & Intermediate Maintenance Facility.  Wendy Hallmark/USN

The USS Connecticut, one of the U.S. Navy’s prized Seawolf class nuclear attack submarines, is set to finally return to service late next year. The Navy previously indicated it could rejoin the fleet this fall. Connecticut is currently at the Puget Sound Naval Shipyard in Washington State for repairs and other work after suffering major damage, particularly to its bow, from a collision with an underwater seamount in the South China Sea in 2021.

Read full story HERE.

USS Toledo (SSN 769) Arrives at New Homeport: Pearl Harbor

Bowfin News | July 12, 2025

USS Toledo (SSN 769) Arrival to Pearl Harbor

The Los Angeles-class Flight III 688i (Improved) attack submarine USS Toledo (SSN 769) made a significant entrance into its new homeport at Pearl Harbor, Hawaii, today. This marks a new chapter for the storied vessel, which recently completed an extensive engineered overhaul and modernization, ensuring its continued operational relevance in the U.S. Navy’s submarine fleet.

The 688i brings quieter operation, advanced sonar, and the ability to operate under ice, making it one of the most versatile submarines in the U.S. Navy. These upgrades ensure the Toledo can conduct a wide range of missions, from intelligence gathering and special operations to direct engagement and support of carrier strike groups.

Upon her arrival, the USS Toledo was greeted by the Bowfin Pearl Harbor Base Submarine Veterans (Subvets), a group with deep ties to the legacy of undersea warfare. The Bowfin subvets, named after the historic WWII submarine USS Bowfin (“Pearl Harbor Avenger”), are known for their dedication to preserving submarine history and supporting active-duty submarine crews in Pearl Harbor.

With her arrival at Pearl Harbor, the USS Toledo embarks on a new era of service, ready to meet the demands of the Pacific theater. She strengthens the U.S. Navy’s undersea capabilities in the Indo-Pacific region. As strategic challenges evolve, the presence of a modernized, battle-ready 688i submarine enhances deterrence and supports the Navy’s commitment to regional security.

Welcome Hula!
Paul Jurcsak observes the Toledo mooring.
L-R: Allen Clemons, Pat Suenaka, and Jim Bazemore
First Toledo Submariner Greets Family

More Photos HERE.

76th Annual Kailua Independence Day Parade

On Friday, July 4, 2025, members of the Bowfin Pearl Harbor Base proudly joined the 76th Annual Kailua Independence Day Parade, upholding a beloved tradition that continues to unite generations along Kainalu Drive. For over seven decades, the Kailua Independence Day Parade has been a vibrant celebration of unity, patriotism, and community spirit. Since 1970, Bowfin Pearl Harbor Base submarine veterans have been honored participants, symbolizing dedication, service, and the enduring relationship between the military and the local community.

This year’s theme, “Waves of Aloha,” beautifully embodies the ever-present spirit of kindness, unity, and welcome that defines Kailua. Just as ocean waves continuously shape the shoreline, the aloha spirit shapes the community—embracing everyone with warmth, respect, and compassion.

“Waves of Aloha” Highlights:

Enduring Bonds – Celebrating the connections between generations, neighbors, and friends, strengthened through shared traditions and support.

Community Spirit – Uplifting Kailua through acts of generosity, inclusion, and collective energy.

Heritage and Progress – Honoring the past while looking forward, much like the waves that are both timeless and ever-changing.

Military and Civilian Unity – Recognizing the contributions of Bowfin Pearl Harbor Base submarine veterans and all who serve, fostering gratitude and pride.

The Bowfin Pearl Harbor Base submarine veterans are honored to continue their participation in this cherished parade. As we ride the “Waves of Aloha” together, we celebrate not only our nation’s independence but also the enduring spirit of Kailua—a community where aloha flows as freely as the ocean breeze.

More photos HERE.