On July 29, 2014 Sevmash Shipyard laid down fifth strategic submarine of the Project 955/Project 955A series.
The new submarine, Knyaz Oleg, is the second submarine of the Project 955A class. The first one, Knyaz Vladimir, was laid down in July 2012. These submarines will eventually join three Project 955 submarines - Yuri Dolgorukiy, Alexander Nevskiy, and Vladimir Monomakh.
Vladimir Monomakh just completed its state acceptance trials, which began in June 2014.