"At the training ground, two Pacific Fleet submarines have worked out practical skills in the search, attack and counterattack of a simulated enemy submarine using ... weaponry and hydroacoustic countermeasures," the statement says.
As part of the drills, one of the submarines attacked the other, "enemy," submarine with torpedoes.
The naval training exercises were provided for by Gromky, the seventh vessel from Russia’s newest class of corvettes, the Steregushchiy-class series.