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Attack submarineFrance / India · 2017 — present · Active

Kalvari-class submarine

Six Scorpène boats built in Mumbai.

INS Kalvari first of six Scorpene class submarines constructed at Mazagon Dock under Project 75 (Kalvari Class) was commissioned into Indian Navy.
Photo via Wikimedia by Indian Navy, licensed CC BY 2.5 in.
Overview

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.

History

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.

Ships in class

Commissioned hulls

  • INS KalvariS21

    Commissioned 2017 · Mazagon Dock

  • INS KhanderiS22

    Commissioned 2019 · Mazagon Dock

  • INS KaranjS23

    Commissioned 2021 · Mazagon Dock

  • INS VelaS24

    Commissioned 2021 · Mazagon Dock

  • INS VagirS25

    Commissioned 2023 · Mazagon Dock

  • INS VagsheerS26

    Commissioned 2025 · Mazagon Dock

Highlights

Combat edge

01

Built under licence at Mazagon Dock

02

Very low acoustic signature

03

Carries the Exocet SM39 anti-ship missile

04

Indian AIP module planned for retrofit