While i am not exactly sure , which generation Akula II belong to but still it is the quitest N Sub currently in Russian service and far better than any chinese N sub
Though it will be partly replaced by Graney class subs starting this yr
Indian Navy itself is quite impressed with Akula II and actually wants indian SSN to be based on it
However navy will submit its requirement or standards for the SSN only in around 2013-14 after having independently operated Akula II for 2-3 yrs to gauge all the requirements and specification for such a project
DRDO meanwhile was asked to conduct a feasibility and design study for such a project
Now what they have found out is that if they were adopt AKULA II class as a base for there SSN then
the 4 proposed SSN could cost upto 10 Billion USD or Rs 45000 cr , simply becoz they would be delivered in 2021 , and would actually be larger than HMS Astute at 9000 ton full load and could carry upto 24 Nirbhay Cruise Missile
The navy has requested that SSN should have far lower acoustic and Sonar signature than Arihant coz such subs would engage in attacking enemy Subs and surface vessels .
Certain Babus at DRDO recently even boasted that SSN project will have more of Graney than Akula
However there is one hurdle and that is price which could result in some hagling between MOD and FM
The second Design study carried out was for a smaller design of the size of French Baracuda class at 4500 empty or 5500 ton full load , this sub will be smaller than Arihant class but will have far lower Acoustic signature thanks to several subsystems and improvements incorporated from Akula II and Graney class
DRDO has said that such class of 4 SSN could cost upto Rs 30000 cr or 7 Billion USD , however they will have substantial lower fire power than AKULA II
Indian navy has an option to either have 3X4 BRAHMOS VLS + 1X4 NIRBHAY VLS or 2X4 NIRBHAY VLS + 6 BRAHMOS launched through Torpedo tubes
There was also a third design study however it was cancelled simply becoz it only involved replacing 12 K15 missiles of Arihant class with 12 Nirbhay missiles and 6-8 Brahmos cruise missiles launched through Torpedo Tubes , apart from higher use of radar absorbing material on Arihant's Hull