So this is our future plan by 2025
3 SSBNS Arihant class + 3 More optional . As far as I know we will go for another 7 advanced SSBNs. Much powerful and stealthy Arihant class
6 Scorpions diesel electric submarines +3 more optional
6 New Stealthy submarine under P75 projects May be of Russians or German with Vertically launched Bramos cruise missile
6 SSN Nuclear Attack submarine . My assumption is that it will be based on Arihant class but with conventional Missiles About 6000 -9000 T . Because I don't belive Arihant is just 6000 T . It's much bigger than that .
Atleast 6-10 of old upgraded Submarines from the present fleet ..
Two Russian nuclear beast on the lease . This lease won't see an end . We will keep renewing for the next 50 years
Under water capability worries is been addressed in a big way . Thank you Modi Gi
With P8I, new submarines hunter helicopters ASW and coverts .