The 30th iteration of the Rim of the Pacific (RIMPAC) exercise began Wednesday with an opening ceremony and press conference in Hawaii, launching the world’s largest international maritime exercise.

Axar.az reports, citing the US Pacific Fleet, that the month-long drills, running through July 31, will involve 30 nations, more than 30 surface ships, five submarines, over 200 aircraft, 15 national land forces, and around 30,000 personnel operating in and around the Hawaiian Islands.

“By training together in complex, realistic scenarios, participating nations improve readiness, sharpen warfighting skills, and strengthen the interoperability required to operate effectively alongside one another whenever and wherever needed,” RIMPAC 2026 commander Vice Adm. Jeff Jablon said.

The exercise, which began in 1971, is being held under the theme “Partners: Integrated and Prepared” and aims to strengthen cooperation among allies and partners while improving maritime readiness.

RIMPAC 2026 will include amphibious operations, missile and gunnery drills, anti-submarine warfare, air defense exercises, humanitarian assistance, disaster response, mine clearance and other maritime operations.