RIMPAC

RIMPAC
Name	RIMPAC
Type	Multilateral naval exercise
Location	Hawaii and surrounding waters
Dates	Biennial (even-numbered years)
Planned by	United States Indo-Pacific Command
Objective	Enhance interoperability and readiness
Participants	Multiple nations (see below)

RIMPAC. The Rim of the Pacific Exercise is the world's largest international maritime warfare exercise. Held biennially in the waters around Hawaii, it is hosted and administered by the United States Navy under the direction of the United States Indo-Pacific Command. The exercise aims to foster and sustain cooperative relationships critical to ensuring the security of sea lanes and promoting a free and open Indo-Pacific region.

Overview

The primary objective is to enhance interoperability and readiness among participating allied and partner navies. The exercise integrates a wide range of capabilities, including amphibious operations, gunnery, missile, anti-submarine, and anti-piracy drills. Training events are designed to be realistic and cover the full spectrum of potential maritime security challenges, from humanitarian assistance to high-end combat scenarios. The scale and complexity involve dozens of ships, submarines, national army and marine forces, and hundreds of aircraft.

History

The inaugural exercise was held in 1971, conceived during the Cold War to improve coordination among key Western Bloc navies in the Pacific Ocean. Original participants included the navies of the United States, United Kingdom, Canada, Australia, and New Zealand. Over the decades, the exercise has grown significantly in size and scope, reflecting shifting geopolitical dynamics. Notably, the Soviet Union was not invited during the Cold War, but following its dissolution, participation expanded to include nations like Russia in the 1990s and early 2000s, and later major regional powers such as the People's Republic of China.

Participants

Participation has expanded from the original five nations to include over two dozen countries from across the globe. Core participants and frequent attendees include traditional ANZUS and NATO allies such as the United Kingdom, Japan, South Korea, France, and Germany. Many Southeast Asian nations, including the Philippines, Singapore, Thailand, Indonesia, and Malaysia, regularly contribute forces. Observers and first-time participants often join, with recent editions seeing involvement from nations like India, Brazil, Israel, and Sri Lanka. The specific roster changes each iteration based on invitations extended by the United States Department of Defense.

Exercises and activities

The exercise schedule is divided into a harbor phase at Joint Base Pearl Harbor-Hickam and an at-sea phase across the Pacific ranges. Key serials include live-fire events like the sinking exercise (SINKEX) of decommissioned vessels, complex air defense exercises integrating AEGIS destroyers, and boarding operations. Amphibious landings are conducted at locations such as Bellows Air Force Station and Kahuku Training Area. Additional activities encompass explosive ordnance disposal training, search-and-rescue simulations, and dive and salvage operations.

Criticism and controversy

The exercise has faced criticism from various groups and governments. Environmental organizations, such as the Natural Resources Defense Council, have protested the use of mid-frequency active sonar and live-fire events, citing harm to marine mammals like whales and dolphins. Some nations and analysts view the large-scale demonstration of military force as contributing to regional tensions, particularly with China. China's participation was suspended by the U.S. in 2018 due to activities in the South China Sea, a decision criticized by Beijing. Protests by Native Hawaiian sovereignty activists have also occurred, opposing the military's presence in Hawaii.

Significance and impact

The exercise serves as a critical confidence-building measure and a tangible demonstration of multinational commitment to maritime security norms. It provides a unique training environment where navies can practice complex, large-scale operations under standardized rules of engagement and communication protocols. The relationships and personal connections forged during the exercise are considered invaluable for real-world coordination during actual disaster response or crisis situations. Furthermore, it reinforces the operational reach and alliance structures central to the strategic posture of the United States and its partners in the Indo-Pacific.

Category:Military exercises Category:United States Navy Category:Pacific Ocean