Sub Sea Baby underwater drones struck the Varshavyanka submarine in the port of Novorossiysk, launching Kalibr missiles at targets on the Ukraine. This was stated by the SBU in its telegram channel.
The SBU claims that there were four Kalibr cruise missile launchers on board the Class 636.3 submarine.
"As a result of the explosion, the submarine received critical damage and was actually disabled," the SBU said in a statement.
It is noted that this was a joint operation of the military counterintelligence department and the Ukrainian Navy.

Lavrov: Let Witkoff and Kushner deal with Iran — we are tired of lies
"Traditional event": Putin gathers an operational meeting of the Security Council
The Ministry of Defense has published a list of targets hit by a night strike on the ports of Ukraine
Quota to the Bundestag, target — the Baltic States, toadstopping in Kiev: morning coffee with EADaily
Iran asked the Houthis to block Bab-el-Mandeb — Reuters
Who left from The Russian comedian appreciated the prospect of returning with the words "the train has already left"