Commander, Submarine Force, U.S. Pacific Fleet

JOINT BASE PEARL HARBOR-HICKAM (April 11, 2025) – Rear Adm. Rick Seif, left, outgoing commander, Submarine Force, U.S. Pacific Fleet, is relieved by Rear Adm. Chris Cavanaugh, incoming commander, during the COMSUBPAC change of command ceremony aboard the Virginia-class fast-attack submarine USS Montana (SSN 794), April 11, 2025. The Pacific Submarine Force provides strategic deterrence; anti-submarine warfare; anti-surface warfare; precision land strike; intelligence, surveillance, reconnaissance, and early warning; and special warfare capabilities around the globe. (U.S. Navy photo by Mass Communication Specialist 1st Class Scott Barnes)

Submarine Force U.S. Pacific Fleet Changes Command aboard USS Montana

Commander, Submarine Force, U.S. Pacific Fleet (SUBPAC) conducted a change of command ceremony aboard the Virginia-class fast-attack submarine USS Montana (SSN 794) at Joint Base Pearl Harbor-Hickam, April 11. FULL STORY

JOINT BASE PEARL HARBOR-HICKAM (April 3, 2025) — Attendees of the Undersea Warfare Commanders’ Conference (USWCC) pose for a group photo on Joint Base Pearl Harbor-Hickam, Hawaii, April 3, 2025. First held in 2018, this year’s theme was “Strengthening Theater Undersea Warfare Interoperability and Lethality in the Indo-Pacific Theater.” The USWCC conference included submarine force representatives from Australia, Canada, France, Japan, Republic of Korea, Singapore, and the U.K. The multi-day event included briefings from each partner nation focused on force employment, combat readiness, interoperability, and integration of emerging technology such as unmanned systems and artificial intelligence. (U.S. Navy photo by Mass Communication Specialist 1st Class Scott Barnes)

Pacific Submarine Force Hosts 2025 Undersea Warfare Commanders’ Conference

Commander, Submarine Force, U.S. Pacific Fleet (SUBPAC) hosted the 2025 Undersea Warfare Commanders’ Conference at Joint Base Pearl Harbor-Hickam, April 1-4, 2025. FULL STORY

250316-N-EI510-1021 Joint Base Pearl Harbor-Hickam, Hawaii, March 16, 2025 – The Virginia-class fast-attack submarine USS Vermont (SSN 792) returns to Joint Base Pearl Harbor-Hickam, Hawaii after a scheduled deployment, March 16, 2025. Vermont is the third U.S. Navy ship named after the Green Mountain State. Vermont was administratively commissioned in April 2020 and is the first Block IV Virginia-class fast-attack submarine. (U.S. Navy photo by Mass Communication Specialist 1st Class Scott Barnes)

USS Vermont Returns Home from First Western Pacific Deployment

The Virginia-class fast-attack submarine USS Vermont (SSN 792) returned to Joint Base Pearl Harbor-Hickam March 16, following a seven-month deployment, the submarine's first deployment to the Western Pacific. FULL STORY

241223-N-EI510-1062 JOINT BASE PEARL HARBOR-HICKAM (Dec. 23, 2024) The Virginia-class fast-attack submarine USS Montana (SSN 794) arrives at Joint Base Pearl Harbor-Hickam during its change of homeport, December 23, 2024. Montana is assigned to Submarine Squadron 1 and is capable of supporting various missions, including anti-submarine warfare, anti-surface ship warfare, strike warfare, and intelligence, surveillance, and reconnaissance. (U.S. Navy photo by Mass Communication Specialist 1st Class Scott Barnes)

USS Montana Arrives to New Homeport of Pearl Harbor

The Virginia-class fast-attack submarine USS Montana (SSN 794) arrived at Joint Base Pearl Harbor-Hickam following a change of homeport from Naval Station Norfolk, Virginia, December 23, 2024. FULL STORY

WE GO WHERE OTHERS CAN'T

With a legacy that stretches back for more than a century, today's U.S. Submarine Force is the most capable in the world and defends the homeland through stealth, endurance, and deterrence.

SUBPAC Headlines

Commander, Submarine Squadron 1 Conducts Change of Command aboard USS Vermont
May 9, 2025 — JOINT BASE PEARL HARBOR HICKAM, Hawaii (May 9, 2025) - Commander, Submarine Squadron (CSS) 1... MORE

JOINT BASE PEARL HARBOR-HICKAM, Hawaii (May 9, 2025) - Rear Adm. Chris Cavanaugh, commander, Submarine Force, U.S. Pacific Fleet, receives report of relief from Capt. Chris Hedrick, incoming commander, Submarine Squadron (CSS) 1, aboard the Virginia-class fast-attack submarine USS Vermont (SSN 792), during the change of command ceremony for CSS-1, May 9, 2025. CSS-1 is composed of six Virginia-class fast-attack submarines, which are capable of supporting various missions, including anti-submarine warfare, anti-surface ship warfare, strike warfare, special operations forces support, and intelligence, surveillance, and reconnaissance. (U.S. Navy photo by Mass Communication Specialist 1st Class Scott Barnes)

Rear Adm. Christopher Nash Assumes Command of Submarine Group Nine
April 29, 2025 — Rear Adm. Christopher Nash relieved Rear Adm. Thomas Wall as commander of Submarine Group (SUBGRU) 9... MORE

Rear Adm. Christopher Nash arrives to a change of command ceremony at a Naval Base Kitsap-Bangor, April 29, 2025. During the ceremony Nash relieved Rear Adm. Thomas Wall as commander of Submarine Group (SUBGRU) 9. SUBGRU-9 exercises administrative control authority for assigned submarine commands and units in the Pacific Northwest providing oversight for shipboard training, personnel, supply and material readiness of SSBNs and their crews. SUBGRU-9 is also responsible for nuclear submarines undergoing conversion or overhaul at Puget Sound Naval Shipyard in Bremerton, Washington. (U.S. Navy photo by Mass Communication Specialist 2nd Class Gwendelyn L. Ohrazda)

Submarine Force U.S. Pacific Fleet Changes Command aboard USS Montana
April 12, 2025 — Commander, Submarine Force, U.S. Pacific Fleet (SUBPAC) conducted a change of command ceremony... MORE

Pacific Submarine Force Hosts 2025 Undersea Warfare Commanders’ Conference
April 10, 2025 — JOINT BASE PEARL HARBOR-HICKAM, Hawaii (Apr. 8, 2025) — Commander, Submarine Force, U.S. Pacific... MORE