Project 75I Submarines: How India Can Make The Most Out Of The Strategic Partnership Model In Defence Sunday, December 27, 2020 By: Swarajya The Project-75I conventional submarines’ (SSKs) procurement is in the news again. The government and the Indian Navy are focussed on getting this project running as soon as possible to counter the increasing naval threat that the People’s Liberation Army (PLA) Navy will pose in the coming decade and beyond. In many ways, the P-75I line of submarines are very different from the P-75 Kalvari (Scorpene) class submarines that are coming out of the Mazagon Docks now.