The Defence Acquisition Council has cleared a mega project to build six conventional submarines for Indian Navy. The six conventional submarines build under the Project-75I (India).

  • The Request For Proposal is a project announcement posted publicly by an organization indicating that bids for contractors to complete the project are sought.


  • The Project 75 envisages indigenous construction of submarines equipped with the state-of-the-art Air Independent Propulsion system at an estimated cost of Rupees 43,000 crore.
    • Project 75 (I), approved in the year 2007, is part of the Indian Navy’s 3 decades Plan for indigenous submarine construction.
    • It will be the 1st under the strategic partnership model which was promulgated in the year 2017 to boost indigenous defence manufacturing.
      • The strategic partnership model allows domestic defence manufacturers to join hands with leading foreign defence majors to produce high-end military platforms to reduce import dependence.
      • The Acquisitions under the Strategic Partnership model refer to participation of private Indian firms along with foreign Original Equipment Manufacturer in ‘Make in India’ in defence.
  • Significance
    • One of the Largest ‘Make in India’ Projects
      • It will serve to facilitate faster and more significant absorption of technology and create a tiered industrial ecosystem for submarine construction in India.
    • To Ensure Self-Reliance
      • From a strategic perspective, this will help reduce current dependence on imports and gradually ensure greater self-reliance and dependability of supplies from indigenous sources.
    • To Protect Indo-Pacific
      • This is keeping in mind the rapid increase of nuclear submarine arsenal by People’s Liberation Army Navy and to protect the Indo-Pacific from future domination by the adversary.
  • 3 decades Submarine Plan
    • The Cabinet Committee on Security Chaired by Prime Minister Modi, in June 1999, had approved a 30-year submarine-building plan which included construction of 24 conventional submarines indigenously by 2030.
    • P75I succeeded the P75 under which six diesel-electric attack submarines of the Kalvari class, based on the Scorpene class, were being built at Mazagon Dock Ltd – the 3rd submarine, INS Karanj, was commissioned in March 2021.
    • Of the total 24 submarines to be built in India, 6 will be nuclear-powered.
    • India has only one nuclear submarine, INS Arihant, at the moment. Arighat, also a nuclear-powered ballistic missile submarine, is to be commissioned soon.
    • Indian Naval Ship Chakra, a nuclear submarine, which is taken on lease from Russia, is believed to be on its way back to the country of origin.

Defence Acquisition Council

  • It is the highest decision-making body in the Defence Ministry for deciding on new policies and capital acquisitions for the Tri services (Army, Navy and Air Force) and the Indian Coast Guard.
  • Minister of Defence is the Chairman of the Council.
  • It was formed, after the Group of Ministers recommendations on ‘Reforming the National Security System’, in the year 2001, post Kargil War (1999).

DAC clears deal for 6 submarines DAC clears deal for 6 submarines