Project 955A Borei-A submarine Knyaz Oleg will go to sea six times during tests.

According to information published by Tass on June 24, 2021, the first serial Project 955A Borei-A class nuclear-powered ballistic missile submarine Knyaz Oleg will go to sea no less than six times during shipbuilders and state trials, a source in the shipbuilding industry told.
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Project 955A Borei-A submarine Knyaz Oleg (Picture source: Oleg Kuleshov)

It was reported on June 17 that the submarine had gone to the White Sea for the first time. Now, the Knyaz Oleg is at sea again.

A source told that the submarine will be delivered to the customer at the end of 2021 if the sea trials are successful.

According to the source, the Knyaz Oleg is planned to go to sea up to four times during its shipbuilders sea trials and twice during its state tests. During the state trials, a launch of a Bulava (SS-NX-32) intercontinental ballistic missile is scheduled for November 2021.

As of today, the Navy operates four Project 955 and 955A submarines. Apart from the Knyaz Oleg, another three Project 955A submarines are at various stages of their construction at the Sevmash Shipyard. Each submarine carries 16 Bulava missiles.

Knyaz Oleg is a Borei-class (Project 955A) nuclear-powered ballistic missile submarine developed by the Rubin Design Bureau and constructed by the Sevmash for the Russian Navy. The submarine is named after Oleg of Novgorod.

Knyaz Oleg submarine is approximately 170 metres (560 ft) long, 13 meters (43 ft) in diameter. 

The RSM-56 Bulava is a submarine-launched ballistic missile (SLBM) developed for the Russian Navy and deployed in 2013 on the new Borei class of ballistic missile nuclear submarines. It is intended as the future cornerstone of Russia's nuclear triad and is the most expensive weapons project in the country.