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18 June 2026 3 views

Project 75 — Kalvari-Class Submarines

theIAShub
theIAShub
18 Jun, 2026
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Project 75 — Kalvari-Class Submarines
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Indigenous submarine construction program under Make in India

Why in News

In 2025, India completed delivery of all six Kalvari-class Scorpene submarines built indigenously by Mazagon Dock Shipbuilders Limited (MDL) in collaboration with France, marking a milestone under Project 75.

Key Facts

  • Project 75 is India's diesel-electric submarine construction program.
  • Six Kalvari-class Scorpene submarines delivered by 2025.
  • Built by Mazagon Dock Shipbuilders Limited (MDL), Mumbai.
  • Technology collaboration with Naval Group (France).
  • Submarines: INS Kalvari, INS Khanderi, INS Karanj, INS Vela, INS Vagir, INS Vagsheer.
  • (UPSC Mains Usage: Links to GS3 — Defence Manufacturing, Maritime Security; India-France Relations)
  • Features Air Independent Propulsion (AIP) technology for extended underwater endurance.
  • Part of 30-year submarine building plan announced in 1999.

Quick Revision Box

Term

Detail

Project 75

Diesel-electric submarine construction program

Submarines Built

Six Kalvari-class Scorpene submarines

Completion Year

2025

Shipyard

Mazagon Dock Shipbuilders Limited (MDL)

Foreign Partner

Naval Group (France)

Technology

Air Independent Propulsion (AIP)


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