Tula (K-114) () is a Project 667BDRM Delfin-class (NATO reporting name: Delta-IV) nuclear-powered ballistic missile submarine (SSBN). As such, she carries a complement of R-29RM Shtil and R-29RMU Sineva nuclear submarine-launched ballistic missiles (SLBM) as her primary deterrent mission, along with anti-ship missiles and torpedoes, the latter for self-defense. Built in Severodvinsk during the late 1980s, she served with the Soviet Navy before being transferred to the Russian Navy following the dissolution of the Soviet Union. Tula underwent an extensive overhaul during 2000–2004 and was fitted with Shtil SLBMs, several of which were launched from her during her later operational life. She was sponsored by the city of Tula, and is homeported in Gadzhiyevo.