Commander, Submarine Force, U.S. Pacific Fleet

NAVAL AIR STATION NORTH ISLAND, Calif. (June 26, 2026) Cmdr. Christian Rivera, off-going commanding officer, Undersea Rescue Command (URC), speaks during the change of command ceremony for URC onboard Naval Air Station North Island, June 26, 2026. During the ceremony, Rivera was relieved by Cmdr. Michael Mowry as commanding officer of URC. URC, comprised of active and Reserve component Sailors, and civilian contractors, is the Navy’s only submarine rescue-capable command ready to deploy around the world in the event of a submarine emergency. (U.S. Navy photo by Mass Communication Specialist 2nd Class Rashan Jefferson)

Undersea Rescue Command Welcomes New Commanding Officer

Cmdr. Michael Mowry relieved Cmdr. Christian Rivera as commanding officer of Undersea Rescue Command (URC) during a change of command ceremony onboard Naval Air Station North Island, June 26, 2026. FULL STORY

HMAS STIRLING, Western Australia, Australia (Sep. 10, 2024) — USS Hawaii (SSN 776) departs HMAS Stirling Sept. 10, marking the conclusion of a historic submarine maintenance period in Western Australia. As part of the Australia, United Kingdom, United States (AUKUS) Pillar 1 effort, Royal Australian Navy personnel assigned to submarine tender USS Emory S. Land (AS 39) worked alongside their U.S. Navy counterparts to make repairs on the U.S. Virginia-class SSN in Australia during a multi-week Submarine Tendered Maintenance Period, or STMP. (U.S. Navy photo by Rory O'Connor)

Pacific Submarine Force Reestablishes Submarine Squadron 3

To support Submarine Rotational Force-West (SRF-West), Rear Adm. Chris Cavanaugh, Commander, Submarine Force, U.S. Pacific Fleet, reestablished Submarine Squadron 3 (CSS-3), which previously operated out of Pearl Harbor, Hawaii, and was decommissioned in February 2012. FULL STORY:

260604-N-MZ309-1177 KEYPORT, Wash. (June 4, 2026) Capt. Lacy Lodmell relieves Capt. Rob Garis as commodore of Submarine Squadron (CSS) 19 during a change of command ceremony at the U.S. Naval Undersea Museum in Keyport, Washington, June 4, 2026. CSS-19 is subordinate to Commander, Submarine Group (SUBGRU) 9 which exercises administrative and operational control of assigned submarine commands and units in the Pacific Northwest, providing oversight for shipboard training, personnel, and the 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. (U.S. Navy photo by Mass Communication Specialist 1st Class Ryan Riley)

Capt. Lacy Lodmell Assumes Command of Submarine Squadron 19

Capt. Lacy Lodmell relieved Capt. Rob Garis as commodore of Submarine Squadron (CSS) 19 during a ceremony held at the U.S. Naval Undersea Museum in Keyport, Washington, June 4, 2026. FULL STORY

JOINT BASE PEARL HARBOR-HICKAM (April 8, 2026) — Rear Adm. Chris Cavanaugh, center, commander, Submarine Force, U.S. Pacific Fleet, provides opening remarks to various leaders during the 2026 Undersea Warfare Commanders’ Conference (USWCC) at Joint Base Pearl Harbor-Hickam, Hawaii, April 8, 2026. First held in 2018, this year’s conference theme was “Shaping the future: Moving forward quickly and collaboratively to assure our combined advantage in the undersea domain.” The USWCC conference included submarine force representatives from Australia, Canada, France, Japan, Republic of Korea, and Singapore. 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 Chief Mass Communication Specialist Omar A. Dominquez)

Pacific Submarine Force hosts 2026 Undersea Warfare Commanders’ Conference

Commander, Submarine Force, U.S. Pacific Fleet (SUBPAC) hosted the 2026 Undersea Warfare Commanders’ Conference at Joint Base Pearl Harbor-Hickam, April 8-10, 2026. FULL STORY

NAVAL BASE POINT LOMA, Calif. (Feb. 17, 2026) Capt. Phillip Sylvia, left, commander, Submarine Squadron 11, stands with Cmdr. Chad Tella, off-going commanding officer, Los Angeles-class fast-attack submarine USS Greeneville (SSN 772), during the change of command ceremony for Greeneville onboard Naval Base Point Loma, Feb. 17, 2026. During the ceremony, Tella was relieved by Cmdr. Spencer Ovren as commanding officer of Greeneville. Greeneville is assigned to Commander, Submarine Squadron 11, home to four Los Angeles-class fast-attack submarines, which are capable of supporting various missions, including anti-submarine warfare, anti-ship warfare, strike warfare and intelligence, surveillance and reconnaissance. (U.S. Navy photo by Mass Communication Specialist 1st Class Tiarra Brown)

USS Greeneville (SSN 772) Holds Change of Command Ceremony

Los Angeles-class fast-attack submarine USS Greeneville (SSN 772) conducted a change of command ceremony onboard Naval Base Point Loma, Feb. 17, 2026. FULL STORY

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SUBPAC Headlines

Undersea Rescue Command Welcomes New Commanding Officer
June 26, 2026 — NAVAL AIR STATION NORTH ISLAND -- Cmdr. Michael Mowry relieved Cmdr. Christian Rivera as commanding... MORE

NAVAL AIR STATION NORTH ISLAND, Calif. (June 26, 2026) Cmdr. Michael Mowry, left, renders a salute to Capt. Phillip Sylvia Jr., commander, Submarine Squadron 11, during the change of command ceremony for Undersea Rescue Command (URC) onboard Naval Air Station North Island, June 26, 2026. During the ceremony, Mowry relieved Cmdr. Christian Rivera as commanding officer of URC. URC, comprised of active and Reserve component Sailors, and civilian contractors, is the Navy’s only submarine rescue-capable command ready to deploy around the world in the event of a submarine emergency. (U.S. Navy photo by Mass Communication Specialist 2nd Class Rashan Jefferson)

Pacific Submarine Force Reestablishes Submarine Squadron 3
June 10, 2026 — PEARL HARBOR, Hawaii - To support Submarine Rotational Force-West (SRF-West), Rear Adm. Chris... MORE

USS Hawaii (SSN 776) departs HMAS Stirling.

Capt. Lacy Lodmell Assumes Command of Submarine Squadron 19
June 4, 2026 — KEYPORT, Wash. (June 4, 2026) — Capt. Lacy Lodmell relieved Capt. Rob Garis as commodore of... MORE

Unmanned Undersea Vehicle Squadron 3 Conducts Change of Command at Naval Base Ventura County
May 21, 2026 — NAVAL BASE VENTURA, Calif. (May 21, 2026) – Unmanned Undersea Vehicle Squadron (UUVRON) 3 held a... MORE