Indian Navy's fifth Scorpene class submarine 'Vagir' was launched on Thursday at Mumbai's Mazagon Dock
It is also developing indigenous Type-IV class submarine batteries and inter-cell connectors, the first set of which has passed all harbour trials after installation on board
Project 75-I, worth an estimated Rs 50,000 crore, will be India's last overseas submarine procurement and hence the last chance to obtain the technology for building the next 12 submarines
The first Scorpene (French for Scorpion), INS Kalvari, was commissioned into operational service by Prime Minister Narendra Modi on December 14, 2017
INS Vela was first commissioned on August 31, 1973 in the Indian Naval service and continued to serve for 37 years
The state-of-the-art features of the Scorpenes include superior stealth and ability to launch crippling attacks with precision-guided weapons
The defence ministry's Defence Procurement Procedure of 2016 allows 114 weeks for concluding a contract - in practice, an over-ambitious target
The Scorpene-class submarine was handed by the Mazgaon Dock Limited, one of the key ship building units of the Indian Navy
The navy will invite Prime Minister Narendra Modi to formally commission the vessel
Six Scorpene-class submarines are being built under 'Project 75' of the Indian Navy
The submarine is designed to operate in all theatres, including the tropics
The govt and the navy must conduct a dispassionate review
Leaked documents are of 22,400 pages and it specify the combat capabilities of French-designed Scorpene-class submarines