Kalvari-class submarine
Six Scorpène boats built in Mumbai.
About the submarine
The Kalvari-class submarines, formally classified as the Project-75 submarines (P-75), is a class of diesel-electric attack submarines operated by the Indian Navy (IN). Built by a syndicate of French and Indian shipyards, namely, Naval Group and Mazagon Dock Limited (MDL) respectively, the class is an export derivative of the French-origin Scorpène-class submarine, originally designed by Naval Group.
Service history
Project 75 brought the French Scorpène design to Mazagon Dock under a 2005 technology transfer, and delivered six boats between 2017 and 2025 after a long start-up. The programme survived a 2016 leak of 22,000 pages of design documents. The last two boats are expected to receive an Indian air-independent propulsion module during refit.
Commissioned hulls
| Name | Pennant | Commissioned | Builder |
|---|---|---|---|
| INS Kalvari | S21 | 2017 | Mazagon Dock |
| INS Khanderi | S22 | 2019 | Mazagon Dock |
| INS Karanj | S23 | 2021 | Mazagon Dock |
| INS Vela | S24 | 2021 | Mazagon Dock |
| INS Vagir | S25 | 2023 | Mazagon Dock |
| INS Vagsheer | S26 | 2025 | Mazagon Dock |
Combat edge
Built under licence at Mazagon Dock
Very low acoustic signature
Carries the Exocet SM39 anti-ship missile
Indian AIP module planned for retrofit
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