MELBOURNE, Australia: "A joint Chinese-Russian naval armada has sailed around Japan following a joint exercise in the Sea of Japan, sailing through a narrow international waterway between two of Japan’s main islands. The 10-ship naval task force, split evenly between Chinese and Russian vessels, sailed through the Tsugaru Strait, which runs between the Japanese islands of Hokkaido and Honshu, during their transit from the Sea of Japan into the western Pacific on Oct.18. The group of ships included the Chinese People’s Liberation Army Navy or PLAN Type 055 cruiser Nanchang (101), Type 052D destroyer Kunming (172) and Type 054A frigates Binzhou (515) and Liuzhou (573) accompanied by a Type 903A replenishment ship carrying the hull number 902. The exact identity of this last ship is uncertain as the PLAN is in the process of re-numbering its replenishment and intelligence gathering fleet, but it is believed to be the Dongpinghu, which previously carried the hull number 960. Meanwhile the Russian ships were the Udaloy-class destroyers Admiral Tributs (564) and Admiral Panteleyev (548), Steregushchiy-class corvettes Gromkiy (335) and Hero of the Russian Federation Aldar Tsydenzhapov (339) and the missile range instrumentation ship Marshal Krylov (331).
The Japan Maritime Self-Defense Force, or JMSDF, kept a close watch on the task group as it sailed close to Japan’s waters, with the minesweepers Aoshima and Izushima in attendance as the Russian and Chinese ships transited the Tsugaru Strait. The Japanese also deployed a P-3C Orion maritime patrol aircraft from its Fleet Air Wing 2 at Hachinohe to monitor the task force."
https://www.defensenews.com/global/asia-pacific/2021/10/22/chinese-russian-task-force-sails-around-japan/