India 's first nuclear powered submarine 'INS Chakra' has been formally received by Indian Ambassador to Russia , Ajay Malhotra. The Russian built submarine was handed over at a ceremony in the far Eastern Russian Port of Primorye . This makes India the 6th operator of such submarines in the world after the US , Russia , China , the UK and France to operate nuclear under water vessel.

The submarine originally known as Nerpa, has been rechristened INS Chakra and has been given to India on a lease ten years worth 900 million US dollar.

AIR correspondent reports that with a displacement of 12,770 tonnes and maximum speed of 30 knots, the submarine is armed with four 533 mm torpedo tubes and four 650 mm torpedo tubes.