A huge fire has engulfed Russian nuclear submarine as it was undergoing repairs at a shipyard in the northern region of Murmansk.
The K-84 Yekaterinburg nuclear submarine is one of seven Delta-IV class submarines in service, all deployed in the Northern Fleet.
It carries 16 NATO classification "Skiff" submarine-launched ballistic missiles.
The Delta-IV class submarines are the core of the naval component of the Russian nuclear triad at present and may remain in service for another 10 years.
