List of submarines of the Indian Navy

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

In service

Under construction

ClassPictureTypeBoatsOriginDisplacementStatusNote Nuclear submarines (11-13)Ballistic missile submarine (SSBN)413,500 tonnesUnder construction (2)Project was approved with a budget of .Construction of two hulls are underway as of December 2025.

Planned

ClassPictureTypeBoatsOriginDisplacementStatusNote Nuclear submarines (11-13) Project 77 Attack submarine (SSN) 6 10,000 tonnes 6 planned 6 boats are planned and are expected to be constructed at the Shipbuilding Centre (SBC) at Visakhapatnam. Project clearance was granted by the Cabinet Committee on Security in February 2015. Attack submarine (SSN) 1 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. Diesel-electric submarines (21) Project 75(I) Class Attack submarine (SSK) 6 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.Kalvari classAttack submarine 3 India/ France>2,000t 3 plannedNew 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.Project 76 classAttack submarine123,000t12 plannedApproval from the Cabinet Committee on Security (CCS) due as of February 2025.

Decommissioned

List of submarines of the Indian Navy

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