Russian Navy transits Tsushima Strait between Japan and South-Korea.

According to information published by the Japan Ministry of Defense on January 4, 2022, three Russian Navy ships, Slava-class cruiser Varyag, Udaloy-class destroyer Admiral Tributs and Boris Chilikin-class fleet oiler Boris Butoma transited from the Sea of Japan to the East China Sea via Tsushima Strait.
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Departure of Slava-class cruiser Varyag (Picture source: Topwar)

Russian cruiser Varyag is the third ship of the Slava-class of guided missile cruisers built for the Soviet Navy now serving the Russian Navy. 

The vessel has a standard displacement of 10,000 tonnes (10,000 long tons) and 12,700 t (12,500 long tons) at full load. Varyag measures 186.4 meters (611 ft 7 in) long with a beam of 20.8 m (68 ft 3 in) and a draught of 8.4 m (27 ft 7 in).

Varyag cruiser a maximum speed of 34 knots (63 km/h; 39 mph) and a range of 9,000 nautical miles (17,000 km; 10,000 mi) at 15 knots (28 km/h; 17 mph).

Admiral Tributs is a Project 1155 Large Anti-Submarine Ship of the Russian Navy. Known in the west as an Udaloy-class destroyer.

Launched in 1983, Admiral Tributs serves in the Russian Pacific Fleet and has taken part in operations alongside the naval forces of other nations like China, India, and Japan.

Tsushima Strait is a channel of the Korea Strait, which lies between Korea and Japan, connecting the Sea of Japan, the Yellow Sea, and the East China Sea.