I'm assuming the two SSKs mentioned were
Kilo class:
Associated Press / Military.comQuote:
Russia Tests Submarine-Launched Missiles in Sea of Japan
15 Apr 2022
Associated Press | By MARI YAMAGUCHI
TOKYO (AP) — Japan’s government said Thursday it is closely watching military activities by Russia following reports it conducted tests of submarine-launched missiles in the Sea of Japan, in its latest military exercises off the Japanese coast following its invasion of Ukraine.
The missile tests came a day after the U.S. Navy’s 7th Fleet and Japan’s Maritime Self-Defense Force announced joint naval exercises in the Sea of Japan.
Russia’s ITAR-Tass news agency reported that two diesel-powered submarines from the Russian Pacific Fleet successfully launched Kalibr cruise missiles at a naval target during the exercises Thursday. Japanese media carried similar reports.
Tass said the target was a ship structure simulating an enemy vessel, and the exercise involved more than 15 warships from its Pacific Fleet and warplanes.
The Kalibr cruise missile is designed to fly at subsonic speeds and can hit targets as far as 2,000 kilometers (1,200 miles) away, Tass said.
(...SNIPPED)