Stereguschy class corvette Sovershenny and Improved Kilo class submarine Petropavlovsk-Kamchatsky were involved in a simulated naval battle at an unspecified location in the Sea of Japan. The submarine was tasked with simulating a torpedo launch against the corvette. The Soverchenny was tasked with detecting and attacking the submarine. The outcome of the simulated naval battle was not reported by the Russian Ministry of Defense.