According to the commander of the Northern Fleet, Nikolay Evmenov, the Tula submarine of the Project 667BDRM/Delta IV class will stay in service until 2029 (as will be the Gepard submarine of the Project 971 class). It's not clear why Tula was singled out - it is not the last submarine to complete overhaul. After Tula left Zvezdochka in December 2017, its place was taken by Bryansk. It appears that Tula will be one of the last Project 667BDRM submarines to be withdrawn - according to Evmenov, Project 955 Borey and Project 885 Yasen submarines will form the backbone of the Russian submarine fleet in 2030.