# RIMPAC 2026 multinational naval exercise – final phase > Live situation record from CLSTR: https://clstr.news/situations/rimpac-2026-multinational-naval-exercise > Updated: 2026-07-31T22:28:09.000Z. Sources: 31. Developments: 14. RIMPAC 2026 continued its wide‑range activities through late July. After Canada’s HMCS Ottawa fired a training torpedo on 7 July and U.S. medical units ran a mass‑casualty drill on 9 July, the exercise saw further milestones. India took over as Deputy Commander of the task force for theatre‑level anti‑submarine warfare on 13 July, reinforcing its ASW leadership. Indonesia’s Marine Corps added 105 mm howitzer firings in West Java and a non‑commissioned officer course in Hawaii, broadening the training mix. In the second week of July, U.S. forces conducted two live‑fire sinking exercises: the decommissioned cruiser USS Mobile Bay was struck on 12 July and the amphibious assault ship USS Peleliu on 17 July. Both vessels were sunk in waters about 15,000 ft deep, roughly 50 nm north of Kauai, using a variety of weapons from HIMARS rockets to Japanese Type‑12 anti‑ship missiles, AGM‑158C LRASMs and Rafael Spike NLOS missiles. The sinkings involved more than 30 000 personnel, 30 ships, five submarines and over 190 aircraft from the United States, Canada, Australia, Italy, Japan, New Zealand and Spain, providing realistic coalition targeting and execution training. The final phase wrapped up on 31 July after five weeks of multinational training around Hawaii. Over 30 nations fielded more than 30 000 service members, 31 surface ships, five submarines and roughly 190 aircraft. Vice Admiral Jeffrey T. Jablon highlighted the drill’s role in strengthening collective capability and deterring aggression, while Japan’s Rear Admiral Takuo Kobayashi stressed gains in anti‑submarine warfare and integrated air defence. Canada contributed two frigates (HMCS Regina and HMCS Ottawa), the submarine HMCS Corner Brook, motor vessel MV Asterix, CP‑140 Aurora patrol aircraft and CH‑148 Cyclone helicopters, deploying about 800 personnel. ## Claims - RIMPAC 2026 ran from 24 June to 31 July 2026 around the Hawaiian Islands. (corroborated by 5 sources) - The exercise involved 30 nations, about 30,000 personnel, 30 surface ships, five submarines and more than 190 aircraft. (corroborated by 5 sources) - More than 800 members of the Canadian Armed Forces participated in RIMPAC 2026. (corroborated by 3 sources) - Canada deployed HMCS Regina, HMCS Ottawa, HMCS Corner Brook, MV Asterix, a CP‑140 Aurora patrol aircraft and CH‑148 Cyclone helicopters. (corroborated by 3 sources) - HMCS Ottawa fired two Mark 46 torpedoes during the exercise. (corroborated by 3 sources) - A Canadian‑led team commanded a multinational task group that protected the U.S. carrier USS Theodore Roosevelt. (corroborated by 3 sources) - Canadian Forces Health Services led RIMPAC’s first multinational maritime tactical combat casualty‑care course. (corroborated by 3 sources) - A Canadian Fleet Cyber Protection Team conducted a stand‑alone defensive cyber operation as part of RIMPAC. (corroborated by 3 sources) ## Timeline ### 2026-07-31: RIMPAC 2026 wraps up in Hawaii with 30 nations and major Canadian participation RIMPAC 2026 ended in Hawaii after five weeks, featuring 30 nations, 30,000 personnel and major Canadian involvement with over 800 troops, ships, aircraft and a new casualty‑care course. 9 sources. https://clstr.news/cluster/rimpac-2026-wraps-up-with-30-nations-30000-personnel-and-extensive-canadian-involvement ### 2026-07-29: RIMPAC 2026 multinational naval drills wrap up in Hawaii RIMPAC 2026 concluded in Hawaii after a month of large‑scale drills with 30+ nations, 30,000 troops, and a Chinese submarine missile test, highlighting regional security cooperation. 3 sources. https://clstr.news/cluster/rimpac-2026-multinational-naval-drills-wrap-up-in-hawaii ### 2026-07-27: Indo‑Pacific defense drills strengthen cooperation among Indonesia, Malaysia, US and allies Indonesian marines joined RIMPAC 2026 in Hawaii, while Malaysia, the US and Australia ran Exercise Keris Strike 31/2026 in Sabah, both boosting Indo‑Pacific defense cooperation. 3 sources. https://clstr.news/cluster/indopacific-defense-drills-strengthen-cooperation-among-indonesia-malaysia-us-and-allies ### 2026-07-23: RIMPAC 2026 sees sinking of USS Mobile Bay and USS Peleliu RIMPAC 2026 sank the decommissioned USS Mobile Bay and USS Peleliu in a multinational live‑fire exercise off Hawaii, involving 30 nations and thousands of personnel. 2 sources. https://clstr.news/cluster/rimpac-2026-sees-sinking-of-uss-mobile-bay-and-uss-peleliu ### 2026-07-19: Indonesian Marine Corps conducts artillery and leadership drills with US partners during RIMPAC 2026 Indonesian Marines sharpened artillery skills in West Java and completed a US‑led NCO leadership course in Hawaii, both under RIMPAC 2026, to boost readiness and interoperability. 2 sources. https://clstr.news/cluster/indonesian-marine-corps-conducts-artillery-and-leadership-drills-with-us-partners-during-rimpac-2026 ### 2026-07-17: RIMPAC 2026 drills test naval and medical readiness in Hawaii RIMPAC 2026 saw Canada’s HMCS Ottawa fire a torpedo to test a new sonar upgrade, while U.S. medical units ran a mass‑casualty drill in Hawaii, both demonstrating joint readiness. 2 sources. https://clstr.news/cluster/rimpac-2026-drills-test-naval-and-medical-readiness-in-hawaii ### 2026-07-13: Indian Navy Takes Lead in Anti‑Submarine Warfare at RIMPAC 2026 in Hawaii India’s Navy joined RIMPAC 2026 in Hawaii, leading anti‑submarine warfare as Deputy Commander Task Force, a move hailed by U.S. Ambassador Sergio Gor as deepening Indo‑U.S. defence ties. 2 sources. https://clstr.news/cluster/indian-navy-takes-lead-in-antisubmarine-warfare-at-rimpac-2026-in-hawaii ### 2026-07-10: Philippine Navy ship joins RIMPAC in Hawaii amid protests over U.S. ties A Philippine navy ship hosted a RIMPAC reception in Hawaii while about 20 protesters demonstrated against the Philippines' U.S. military ties, citing human‑rights concerns. 2 sources. https://clstr.news/cluster/philippine-navy-ship-joins-rimpac-in-hawaii-amid-protests-over-us-ties ### 2026-07-04: India deploys P‑8I maritime patrol aircraft to RIMPAC 2026 in Hawaii India sent P‑8I maritime patrol aircraft to Hawaii for RIMPAC 2026, joining 30 nations in the biggest naval exercise to boost interoperability and counter growing Chinese presence in the Indo‑Pacific. 2 sources. https://clstr.news/cluster/india-deploys-p8i-maritime-patrol-aircraft-to-rimpac-2026-in-hawaii ### 2026-07-01: USS Theodore Roosevelt Leads Community and International Helicopter Exchanges at RIMPAC 2026 USS Theodore Roosevelt participated in RIMPAC 2026, conducting community clean‑ups and tours in Hawaii and hosting an international helicopter exchange with partners from eight nations. 2 sources. https://clstr.news/cluster/uss-theodore-roosevelt-engages-locals-and-allies-during-rimpac-2026-in-hawaii ### 2026-06-29: US-led Pacific drills include Japan island exercise and 31‑nation RIMPAC 2026 US‑Japan drills practiced island seizure, while the 31‑nation RIMPAC exercise began in Hawaii, involving over 30,000 troops and the largest naval forces in the Pacific. 4 sources. https://clstr.news/cluster/us-led-pacific-drills-include-japan-island-exercise-and-31nation-rimpac-2026 ### 2026-06-27: US leads 31‑nation RIMPAC 2026 drills to counter China’s Pacific expansion US‑led RIMPAC 2026 with 31 nations kicks off, featuring carriers, unmanned vessels and a large sinking drill to counter China’s expanding Pacific naval activities. 2 sources. https://clstr.news/cluster/us-leads-31nation-rimpac-2026-drills-to-counter-chinas-pacific-expansion ### 2026-06-26: RIMPAC 2026 features expanded 30‑nation participation and unmanned submarine trials RIMPAC 2026, the 30th edition, sees 30 nations fielding 30,000 personnel, 30 ships and 206 aircraft in Hawaii, while U.S. submarines test unmanned undersea vehicles and Harpoon missile strikes. 2 sources. https://clstr.news/cluster/rimpac-2026-features-expanded-30nation-participation-and-unmanned-submarine-trials ### 2026-06-22: Philippine Navy and Coast Guard Deploy to RIMPAC 2026 in Hawaii The Philippines’ BRP Miguel Malvar and BRP Gabriela Silang joined RIMPAC 2026 in Hawai‘i, after joint training with the U.S. Coast Guard in Guam, highlighting deepening maritime partnership. 2 sources. https://clstr.news/cluster/philippine-navy-and-coast-guard-deploy-to-rimpac-2026-in-hawaii --- Cite as: RIMPAC 2026 multinational naval exercise – final phase. CLSTR, https://clstr.news/situations/rimpac-2026-multinational-naval-exercise