Russian submarine Karelia (K-18)

[1][2][3] The boat is powered by two VM-4 180 MW (240,000 hp) pressurized water reactors which drive two shafts with seven-bladed fixed-pitch propellers.

[2][3] The boat is equipped with 16 R-29RM Shtil (range of 8,300 km (5,200 mi) or R-29RMU Sineva (range of 11,547 km (7,175 mi) submarine-launched ballistic missiles, RPK-7 Veter anti-ship missiles and 4 533-mm bow tubes to launch up to 12 torpedoes or 24 mines.

[1] In April 2000, Vladimir Putin, then the Acting President of Russia, spent the night in the submarine at a depth of over 50 metres, and oversaw the Northern Fleet exercises.

[5] In February 2022, the submarine participated in the Grom-2022 strategic nuclear exercises, which were held in the context of the Ukraine crisis.

The submarine successfully launched a Sineva ballistic missile from a position in the Barents Sea.