At a ceremony at Sevmash on 21 December 2021, the Russian Navy officially accepted for service the Knyaz Oleg submarine of the Project 955A/Borey-A class and the Novosibirsk attack submarine of the Yasen-M class.

Construction of Knyaz Oleg began in 2014. It is the fifth ship of the Project 955/955A class. In October 2021, the submarine conducted a launch of a Bulava missile as part of the State tests.