Russian frigate Admiral Kasatonov off the Norwegian coast.

According to a tweet published by the Norwegian MoD on January 25, 2022, a Norwegian aircraft P-3C Orion followed a Russian group of vessels, including frigate Admiral Kasatonov and cruiser Marshal Ustinov, off the Norwegian coast.
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Admiral Gorshkov class frigate Admiral Kasatonov (Picture source: Norwegian MoD)

Admiral Flota Kasatonov is an Admiral Gorshkov class frigate of the Russian Navy and the second ship of the class. Admiral Kasatonov was laid down on 26 November 2009 at Severnaya Verf, was launched on 12 December 2014, and was commissioned on 21 July 2020.

Marshal Ustinov is a Slava-class cruiser designed during the Soviet Union. As originally constructed the vessel had a standard displacement of 9,530 t (9,380 long tons) and 11,670 tonnes (11,490 long tons) at full load.

The cruiser measures 186.4 metres (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). The vessel is powered by a combined gas or gas (COGOG) system comprising four 23,300 kilowatts (31,250 shp) boost gas turbines and two 8,900 kW (12,000 shp) cruise gas turbines driving two shafts for a combined 93,000 kW (125,000 shp).

This gives the 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). As built the cruiser had a complement of 505. This was later reduced to 476 including 62 officers.