List of submarines of the Indian Navy

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Last edited March 26, 2026


This is a list of known submarines of the Indian Navy, grouped by class, and pennant numbers within the class.[1]

1999 Submarine-building Perspective Plan[edit | edit source]

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In service[edit | edit source]

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Under construction[edit | edit source]

Reports from December 2025 claim that the construction of the first two S5-class nuclear-powered ballistic missile submarines has been initiated. Although, no confirmation or denial has been given by the officials from the Indian Navy, but it is to be expected as the Indian SSBN program is widely termed a Black project.[2][3]

Planned[edit | edit source]

Class Picture Type Boats Origin Displacement Status Note
Nuclear submarines (11-13)
class Ballistic missile submarine (SSBN) 4-6  India 13,500 tonnes 4-6 planned Project was approved with a budget of ₹10,000 crore (US$1.4 billion).[4][5][6]
Project 75 Alpha Attack submarine (SSN) 6  India 10,000 tonnes 6 planned 6 boats are planned and are expected to be constructed at the Shipbuilding Centre (SBC) at Visakhapatnam.[7] Project clearance was granted by the Cabinet Committee on Security in February 2015.[8]
class Attack submarine (SSN) 1  Russia 12,770 tonnes 1 planned In March 2019, India signed a US$3 billion agreement with Russia to lease another Akula-class submarine, which is expected to join the Indian Navy by 2026.[9]
Diesel-electric submarines (21)
Project 75(I) Class Attack submarine (SSK) 6  India 3,000-4,000t 6 approved It had been approved by the government worth ₹43,000 crore in June 2020. The chosen submarine is an modified design of the German Type 214 submarine.[10]
Kalvari class Attack submarine 3 India India/France France >2,000t 3 planned New plug module that would give the submarine AIP capability. These units will be larger in size and it is planned that all previous units will be upgraded during their next overhaul cycle.[11]
Project 76 class Attack submarine 12  India 3,000t 12 planned Approval from the Cabinet Committee on Security (CCS) due as if February 2025.[12]

Decommissioned[edit | edit source]

INS Kursura museum ship
INS Chakra (S71), a leased Soviet Charlie-class nuclear submarine

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See also[edit | edit source]

Indian navy related lists
Indian military related

Notes[edit | edit source]

References[edit | edit source]

  1. ↑ "Submarines active". Indian Navy. Archived from the original on 19 August 2013. Retrieved 1 January 2013.
  2. ↑ Masterminds, Indian. "What is the S5 Nuclear Ballistic Missile Submarine? India Begins Construction of Its Most Advanced Nuclear Submarines". Indian Masterminds. Retrieved 13 February 2026.
  3. ↑ Asia, Defence Security. "India's $14 Billion Project-77: Nuclear Submarine Fleet to Dominate the Indian Ocean and Counter China's Undersea Expansion". Defence Security Asia. Retrieved 13 February 2026.
  4. ↑ Unnithan, Sandeep (7 December 2017). "From India Today magazine: A peek into Indias top secret and costliest defence project, nuclear submarines". India Today. Retrieved 12 December 2017.
  5. ↑ Diplomat, Saurav Jha, The. "India's Undersea Deterrent". The Diplomat. Retrieved 19 May 2019.{{cite web}}: CS1 maint: multiple names: authors list (link)
  6. ↑ Roblin, Sebastien (27 January 2019). "India is Building a Deadly Force of Nuclear-Missile Submarines". The National Interest. Retrieved 2 September 2019.
  7. ↑ "Move to fast-track two submarine projects gathers steam". Archived from the original on 23 December 2015.
  8. ↑ "Rs 1.2 lakh crore nuclear submarine project closer to realisation".
  9. ↑ "Russia to lease nuclear submarine to Indian Navy in $3 billion deal". The Week. Press Trust of India. 8 March 2019.
  10. ↑ "India, Germany close to signing $8 bn P75I submarine deal, pact likely by March-end". The Times of India. 31 January 2026. ISSN 0971-8257. Retrieved 26 March 2026.
  11. ↑ Menon, Adithya Krishna (14 July 2023). "India to Procure Rafale M, More Scorpene Submarines". Naval News. Retrieved 10 August 2023.
  12. ↑ Peri, Dinakar (22 February 2025). "DRDO indigenous submarine proposal to go for CCS approval in couple of months; eight years for first sub". The Hindu. ISSN 0971-751X. Retrieved 26 March 2026.

External links[edit | edit source]

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