The construction of the seventh submarine of the Borei class ended earlier in the day, the news channel said.
All weapons systems of the submarine will be tested during the trials, according to the channel.
The Project 955 Borey and the upgraded 955A Borei-A submarines belong to the fourth generation of nuclear-powered missile-carrying submarines. Submarines are armed with 16 Bulava ballistic missiles and are intended for strategic nuclear deterrence.