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Project 75 Alpha

From Wikipedia, the free encyclopedia

Class overview
Name: Project 75 Alpha
Builders: Navy Shipbuilding Centre, Visakhapatnam
Operators:  Indian Navy (Planned)
Cost: 1.2 lakh crore (US$17 billion) total cost[1]
In commission: 2020s
Planned: 6
Active: 0
General characteristics
Type: Nuclear powered attack submarine (SSN)
Displacement: 6,000 t (5,900 long tons; 6,600 short tons)
Range: Unlimited except by food supplies
Armament: Torpedoes and cruise missiles

The Indian Navy aims to procure new nuclear-powered attack submarines (SSN) under Project 75 Alpha.[2] The Government of India approved the construction of six of such submarines in February 2015.[3] These will be designed by the Navy's in-house Directorate of Naval Design and indigenously built in the Shipbuilding Centre at Visakhapatnam. Since India is a traditional user of Russian nuclear submarines (with INS Chakra on lease) the new domestically built submarines would be third class of SSN operated by Indian navy after leased Charlie I and Akula II-class submarines.[4][5]


According to India Today, a patrol by a Shang-class submarine in the Indian Ocean prompted the revival of a plan to build six nuclear-powered attack submarines.[6]

The submarines will be powered by a miniature pressurised water reactor (PWR) being developed by the Bhabha Atomic Research Centre which has already supplied a similar 83 MW miniature reactor for the Arihant-class submarine SSBNs.[4]

On 24 June 2019, it was reported that 100 crore (US$14 million) have been allocated for the initial phase of the project. The submarines will be designed by Directorate of Naval Design and the development is expected to continue till 2025. Mishra Dhatu Nigam is developing a new hull material that is expected to allow the submarine to dive to deeper depths than Arihant class. A scaled down model of the submarine is planned to be tested first. The total cost of the project is estimated to be around 1 lakh crore (US$14 billion).[7]

In February 2020, The Economic Times reported that the preliminary design phase of the programme has been successfully completed. The report stated that Submarine Design Group of the Directorate of Naval Design, assisted by the DRDO, will now start working on the detailed design and construction phase of the programme.[1]

See also


  1. ^ a b Pubby, Manu (21 February 2020). "India's Rs 1.2 lakh crore nuclear submarine project closer to realisation". The Economic Times. Retrieved 23 February 2020.
  2. ^ Bhattacharjee, Sumit (4 December 2020). "INS Vikrant may be inducted by 2022-23, says ENC Chief". The Hindu. ISSN 0971-751X. Retrieved 4 December 2020.
  3. ^ "Government clears construction of 7 stealth frigates, 6 nuclear-powered attack submarines". The Economic Times. 18 February 2015. Retrieved 19 April 2015.
  4. ^ a b "Watch Out, China: India Is Building 6 Nuclear Attack Submarines". The National Interest. 18 February 2015. Retrieved 19 April 2015.
  5. ^ "India finalizing plans to order three more Scorpene submarines". The Times of India. Retrieved 4 December 2015.
  6. ^ Unnithan, Sandeep (10 December 2017). "A peek into India's top secret and costliest defence project, nuclear submarines". India Today. Archived from the original on 20 April 2019.
  7. ^ Pubby, Manu (24 June 2019). "Work begins on India's next gen nuclear-powered submarines". The Economic Times. Archived from the original on 24 June 2019. Retrieved 2 July 2019.

This page was last edited on 30 December 2020, at 12:38
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