Tula submarine of the Project 667BDRM/Delta IV completed overhaul at the Zvezdochka Plant in Severodvinsk. According to a Zvezdochka report, the submarine completed the test program on December 21, 2017.

The submarine arrived to Zvezdochka in December 2014. Normally, its place would be taken by another submarine of the Project 667BDRM class, but this time no submarine is reported to enter overhaul.

UPDATE: In fact, there was a report about Bryansk waiting to enter overhaul in 2018 - probably in March. Bryansk completed its most recent overhaul in 2008, although it was seen in dry dock in 2012.