The Russians have been using almost exclusively gun fire to attack naval drones generally, including machine guns from helicopters and deck mounted aboard ship.
Submarines have historically always been easier to detect (within the game) if they were attached to a surface group. Almost always better to place them separately.
I believe both the 76mm OTO and the 30mm AK-630 were originally on the spec sheet when the configuration for INS Vikrant was being developed.
Even the AK-630 series is getting rather long in the tooth.
How China Could Quarantine Taiwan, Part 1 of a ChinaPower Series (CSIS, 5 June 2024)
How China Could Blockade Taiwan, Part 2 of a ChinaPower Series (CSIS, 22 August 2024)
It is comforting to see folks still producing scenarios and folks still playing them.
In related news, it does look like F-16s in Ukrainian will be receiving both AIM-9X and AIM-120C8.
Well, not quite "off the coast".
Remember this submarine was attacked with Storm Shadow and/or SCALP last September while in dry dock.
She had reportedly been patched up and was at anchor at the time of the most recent strike.