The link relates to TOI. It was reported much earlier but I never noticed it. Today I was checking Wikipedia,there I found this news.
Recent news is also old around last January. I missed this one too but when they updated Wikipedia then i came to know about this news. It's 2nd time. Here you go.
Navy wants to have
three SSBNs and six SSNs (nuclear-powered attack submarines) in the long term, as reported by TOI earlier. The force is grappling with a depleting conventional underwater arm, down to only 14 aging diesel-electric submarines.
Nuclear-powered submarines can silently stay underwater for months at end, unlike conventional ones that have to surface every few days to get oxygen to recharge their batteries.
India to achieve N-arm triad in February - Times Of India
India intends to build three SSBN and six SSN 18.03.2010
Coming 10-year leasing of Russian SSN K-152 Nerpa to Indian Navy could not conform to India's long-term plans to create sea nuclear deterrence force; the reason is international nonproliferation treaty as for missiles with the range over 300 km and, therefore, Nerpa could not be armed with long-range strategic missiles.
This submarine will be used for protection of the first Indian-made SSBN INS Arihant which will be presumably commissioned in 2011-2012. Armed with torpedoes and Club-S cruise missiles with the range below 300 km, Nerpa would be a kind of silent killer chasing enemy's subs and ships.In the longer term India intends to construct three nuclear-powered ballistic missile subs and
six nuclear-powered attack subs. In contrast to diesel electric submarines which frequently need to surface for battery recharging and oxygen replenishment, nuclear-powered subs are capable to stay underwater almost forever. Thus, a SSBN is considered to be the most hard-detectable nuclear missile carrier.
At present, Indian Navy has only 16 obsolete diesel subs while US Navy has 71 nuclear-powered submarines (including 14 SSBNs) and China possesses 62 subs (10 of them are nuclear including three SSBNs).
India intends to build three SSBN and six SSN