US Navy USS Chung-Hoon conducts GUNEX exercise with HMAS Stuart.

U.S. Navy guided-missile destroyer USS Chung-Hoon (DDG 93) conducted a gunnery exercise with the Royal Australian Navy frigate HMAS Stuart (FFH 153) August 19 during Exercise Rim of the Pacific (RIMPAC) 2020.
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Guided-missile destroyer USS Chung-Hoon (DDG 93) conducts a MK 45 five-inch gun live fire during Exercise Rim of the Pacific (RIMPAC) 2020. (Picture source: US Navy)

During the exercise, Stuart dropped a floating target into the ocean, known as a “killer tomato.” Chung-Hoon fired 20 rounds from the MK 45 five-inch gun and 400 rounds from .50 caliber machine guns.

Prior to the live-fire exercise, Chung-Hoon and Stuart sailed in formation and conducted tactical movements with the Japanese ship JS Ise (DDH 182) and the French ship FS Bougainville (A 622).

Ten nations, 22 ships, 1 submarine, and more than 5,300 personnel are participating in RIMPAC from August 17 to 31 at sea around the Hawaiian Islands. RIMPAC is a biennial exercise designed to foster and sustain cooperative relationships, critical to ensuring the safety of sea lanes and security in support of a free and open Indo-Pacific region. The exercise is a unique training platform designed to enhance interoperability and strategic maritime partnerships. RIMPAC 2020 is the 27th exercise in the series that began in 1971.

USS Chung-Hoon (DDG-93) is an Arleigh Burke-class Aegis destroyer serving in the United States Navy (USN). Chung-Hoon was named in honor of Rear Admiral Gordon Pai'ea Chung-Hoon (1910–1979), recipient of the Navy Cross and the Silver Star.

Stuart is a long-range frigate capable of air defence, surface and undersea warfare, surveillance, reconnaissance and interdiction. Stuart's combat capabilities have been significantly improved under the Anti-Ship Missile Defence upgrade program, a world-class program that provides an enhanced sensor and weapons systems capability. The upgrade showcases Australian design and integration capability, with new Phased Array Radar technology designed by CEA Technologies in Canberra, upgrades to combat systems performed by Saab Systems in South Australia, and platform integration design by BAE Systems in Victoria.