"Animal Division" is based in the Murmansk region, in the city of Gadzhiyevo. Absolutely all of its nuclear-powered ships are made according to the design of Malachite 971 design bureau, aka “Pike-B”, aka “Shark” according to NATO classification. So these submariners are double predators. And like any wild beast, all these “Cheetahs”, “Tigers” and “Panthers” do not let outsiders to themselves. But the crew of "Military acceptance" managed to visit several "cat" boats at once.
As the cat is distinguished by the noiseless movement, so "Pike-B" is distinguished by the noiseless movement. This, as well as high speed of movement, make this type of submarines extremely dangerous for the enemy.