NEW YORK -- The Chinese aircraft carrier Liaoning and five escort vessels have passed through a key waterway off Japan on their way to the Pacific Ocean, the Joint Staff Office of the Japanese Defense Ministry said Sunday.
The carrier group was spotted around 8 a.m. Saturday roughly 470 km southwest of Nagasaki Prefecture's Danjo Islands, the joint staff said. The convoy then passed through the Miyako Strait, the 250 km-wide waterway between Okinawa Island and Miyako Island.
This is the first time since April 2020 that the Liaoning has been known to pass this waterway, and it comes just days after exercises between the U.S. and Australian navies in the Eastern Pacific.
Accompanying the Liaoning were one Renhai class stealth guided missile destroyer, two Luyang III class guided missile destroyers, one Jiangkai II multi-role frigate and one Fuyu class fast combat support ship.
The Japanese side deployed destroyer JS Suzutsuki, a P-1 maritime patrol aircraft and a P-3C anti-submarine warfare patrol aircraft to gather information and monitor the movements of the Chinese vessels, the joint staff said.
The joint staff also said that a Chinese Y-9 military transport aircraft passed over the Miyako Strait on Sunday and that Japan had scrambled a jet fighter in the airspace to respond.
The movements come as the U.S. Navy intensifies cooperation with the Quad partners of Japan, India and Australia in the Indo-Pacific.
On the heels of a visit to India by U.S. Defense Secretary Lloyd Austin, the Theodore Roosevelt Carrier Strike Group conducted joint multi-domain operations with India's navy and air force in the Indian Ocean on March 28 and 29.
Aircraft carrier USS Theodore Roosevelt, guided missile cruiser USS Bunker Hill and destroyer USS Russell operated with Indian frigate INS Shivalik and Indian Air Force aircraft from Squadron No. 222, known as "The Tigersharks."
The U.S. Indo-Pacific Command has emphasized strengthening joint multi-domain operations -- the convergence of capabilities from land, sea, air, space and cyberspace -- and the inclusion of the Indian Air Force in the exercise advances that directive.
The USS Blue Ridge, the flagship of the U.S. 7th Fleet, operated with Japan Maritime Self-Defense Force destroyer JS Kongo on March 29 to test their combined maritime skills and intercommunication capabilities.
"Unique to this exercise was the participation of aircraft embarked aboard Blue Ridge, assigned to Helicopter Sea Combat Squadron 12, which flew in formation with the ships and transferred [Blue Ridge commanding officer] Capt. [Tim] Waits from Blue Ridge to Kongo during maneuvers to engage with leadership and visit the ship's crew," the U.S. Navy said.
The exercises were immediately followed by a two-day joint drill involving the U.S. Navy and Royal Australian Navy in the Eastern Pacific.
Guided missile destroyer USS John Finn and Australian Hobart-class air warfare destroyer HMAS Sydney took part in a Group Sail exercise in the waters off the coast of Southern California on Wednesday and Thursday to improve interoperability.