Russia’s first Project 885M Yasen-class attack submarine, the Severodvinsk, will complete final trials in November or December.
The sea trail would decide whether to adopt it for service with the Russian Navy, the United Shipbuilding Corporation was quoted as saying by RIA Novosti.
Ealier, the local media reports said the navy main command refused to commission the nuclear-powered Severodvinsk over unspecified technical problems.
The submarine has completed four rounds of sea trials since May 30, the manufacturer said, adding that all the trials had been a success.
The submarine’s armament will include 3M55 Oniks (SS-N-26) and 3M54 (SS-N-27) Kalibr cruise missiles and conventional torpedoes, rocket torpedoes and mines, the report added.
The second Project 885M submarine, the Kazan, has been under construction at the Sevmash shipyard since 2009.