Project 75I: The Indian Navy’s Project 75I (P75I) Scorpene submarine development for six latest-generation attack boats is expected to be completed by 2022. The P75I Scorpene class diesel-electric / air-independent propulsion (AIP) submarines are based on the Scorpene class submarines, which were designed by French naval shipbuilding firm DCNS in partnership with Spanish shipbuilding firm Navantia. The new submarines are being built by Mazagon Dock in Mumbai, India, using the technology and training provided by DCNS.
Project 28: P 28 is a project under which four Anti Submarine Warships have to be built indigenously in India by Garden Reach Shipbuilders And Engineers (GRSE) , Kolkata.
Project 28 was approved in 2003, with construction of the lead ship, INS Kamorta commencing on 12 August 2005. Three of the four corvettes, INS Kamorta , INS Kadmatt and INS Kiltan were commissioned in 2014, 2016 and 2017 respectively.