RIMPAC

The Rim of the Pacific Exercise (RIMPAC) is the world's largest international maritime warfare exercise. RIMPAC is held biennially during June and July of even-numbered years from Honolulu, Hawaii, with the exception of 2020 where it was held in August. It is hosted and administered by the Indo-Pacific Command, headquartered at Pearl Harbor, in conjunction with the Marine Corps, the Coast Guard, and Hawaii National Guard forces under the control of the Governor of Hawaii.

The first RIMPAC, held in 1971, involved forces from Australia, Canada, New Zealand, the United Kingdom (UK), and the United States (US). Australia, Canada, and the US have participated in every RIMPAC since then. Other regular participants are Chile, Colombia, France, India, Indonesia, Japan, Malaysia, the Netherlands, Peru, Singapore, South Korea, and Thailand. The Royal New Zealand Navy was frequently involved until the 1985 ANZUS nuclear ships dispute and was subsequently absent, until returning to take part in more recent RIMPACs since 2012.

While not contributing any ships, observer nations are involved in RIMPAC at the strategic level and use the opportunity to prepare for possible full participation in the future.

The United States contingent has included an aircraft carrier strike group, submarines, up to a hundred aircraft and 20,000 Sailors, Marines, Coast Guardsmen and their respective officers. The size of the exercises varies from year to year.

In the National Defense Authorization Act for Fiscal Year 2022, both houses of the US Congress have called for a Taiwanese participation of RIMPAC 2022 in the face of "increasingly coercive and aggressive behavior" by China.

As discussed previously, the first RIMPAC was in 1971.

RIMPAC '88 took place in June 1988, and involved the navies of Japan, Australia, Canada and the United States, as well United States Air Force B-52s.

Two US battle groups staged out of Pearl Harbor for the exercise: The USS Nimitz carrier battle group and the USS Missouri battleship battle group.