K-571 Krasnoyarsk is a Yasen-class nuclear-powered cruise missile submarine of the Russian Navy.

[5] Differences in the project have appeared sufficient to consider it as a new upgraded version Yasen-M (Russian: Ясень-М).

The Russian navy declared that the submarine will be improved in comparison to Severodvinsk, the first of the class.

[5] Compared to the first-of-class Severodvinsk, Kazan, Novosibirsk and Krasnoyarsk are some 40 feet (12 m) shorter, resulting in the deletion of a sonar array from the former's bow.

[8] The submarine's future commander Captain 2nd Rank Ivan Artyushin traditionally smashed a bottle against the ship's board.