Also read: Why Russians won't give nuclear attack submarine to Modi
Prime Minister Narendra Modi is going to Russia with a wish-list of defence equipment to buy. The Russians are pretty much willing to sell whatever we want, but one item wont be coming our way for a bit.
It is the Yasen-class submarine, the newest Russian nuclear-powered multipurpose attack submarine. Based on the Akula-class submarine (like INS Chakra) and the Alfa-class submarines, it is projected to replace Russia's Soviet-era attack submarines like the Akula and Oscar-class. The Russians began building these submarines only in 2011 and can build only one a year at the best.
Read more here.