Reminds me of the first stage Soviet boomers, the Hotels and the Golfs, however more advanced naturally because of the era. Small missile loadout and small size.
But, that's all India needs at the moment.
And with naval purchase relations between India and Russia at an all time low, perhaps they'll start looking towards other nations for their boomer needs, but who? I can't see the US helping, the UK would probably have more red tape than submarine, likewise other EU nations, and India and China aren't exactly best of friends so I guess that just leaves Russia.