Project 75 and Project-75 I

Project 75 includes indigenous construction of six Kalvari Class submarines of Scorpene design.

These submarines are being constructed at Mazagon Dock Shipbuilders Limited (MDL) Mumbai, with technology transfer from France.

The six submarines under Project 75 are: Kalvari, Khanderi, Karanj, Vela, Vagir, and Vagsheer.

Scorpene submarines are a category of diesel-electric attack submarinesmeant to stay submerged for extended durations and undertake operations like intelligence gathering.

Under Project 75I India will purchase 6 next generation diesel submarines with Air Independent Propulsion System (AIP) technology for the Indian Navy.