[4] The Kashtan CIWS on the first ship was replaced in subsequent vessels by twelve Redut VLS cells containing[12] 9M96E medium-range SAMs of the S-400 system.

[13] The export version known as Project 20382 Tigr carries either eight supersonic SS-N-26 (P-800 Oniks) anti-ship missiles or sixteen subsonic SS-N-25 'Switchblade' (Kh-35E Uran).

[14] Starting from Aldar Tsydenzhapov, newly built ships of the class received an upgraded sensor mast containing the Zaslon radar system that was first installed on the Project 20385 corvette Gremyashchiy.

[15] In 2007 the Indonesian Navy made an agreement in principle (pending a full contract) for four vessels of this type to replace their ageing Dutch-built Fatahillah-class corvettes.

The first was to be built in Spain and fitted out in St. Petersburg, leaving open the option of Indonesian involvement in building the subsequent ships.

[14] The first actual contract for the export version, Project 20382 Tigr, was signed at the 5th International Maritime Defense Show in St. Petersburg in July 2011 when Algeria ordered two ships.

The exercise has been suggested to be an answer to the largest NATO post-Cold War simulation of amphibious landing in Europe Defender 2020.

[25] The Russian exercise started with corvette Stoikiy and tank landing ship (LST) Korolyov being deployed to the North Sea in early March.

Another exercise was held in the Bering Sea by corvettes MPK-82, MPK-107, Ust-Ilimsk, Kholmsk, Moroz, Razliv, Iney, Smerch and two minesweepers.

[47] In November–December 2020, corvettes Steregushchiy, Boikiy and tanker Kola took part in an unusually intensive Russian naval activity in the North Sea and areas near the United Kingdom.

[48][49] The deployments could have been an answer to the sailing of US, British and Norwegian warships to the Barents Sea for the first time after the Cold War earlier in 2020.

[55] During the February–March exercises of the Baltic Fleet, Boikiy, Soobrazitelnyy and Steregushchy[56] were active in the Baltic Sea, along with frigate Yaroslav Mudry,[57] anti-ship corvettes Mytishchy, Sovetsk, Odintsovo,[58] Zelenyy Dol, Serpukhov, Morshansk, Zarechnyy,[59] Passat, anti-submarine corvettes Aleksin and Kabardino-Balkariya,[60] LSTs Minsk and Korolyov, tanker Aleksandr Grebenshchikov, tug Anatoly Ptytsyn, research vessel Sibiryakov, minesweepers and other ships.

[61][62][63] On 18 February, conventional submarine Rostov-na-Donu and escort tug Nikolay Muru transited the area towards the Mediterranean Sea, as well.

[67] Jan 2022 The Russian Baltic Fleet's task force made up of corvettes Stoikiy and Soobrazitelny departed from the naval base of Baltiysk for a long-distance deployment[68] As part of the long distance deployment the two corvettes carried out Naval excerises in the Atlantic outside of the Irish EEZ along with other ships and then visited Algeria.