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Kalvari-class submarine (2015)
Class of submarines based on the Scorpène-class submarine / From Wikipedia, the free encyclopedia
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The Kalvari-class submarines, formally classified as the Project-75 submarines (P-75), is a class of diesel-electric attack submarines operated by the Indian Navy (IN).[9] Currently being constructed by a syndicate of French and Indian shipyards, namely, Naval Group and Mazagon Dock Limited (MDL) respectively, the class is an export derivative of the French-origin Scorpène-class submarine, originally designed by Naval Group.[10]
![]() Kalvari, the maiden vessel of the class, at sea | |
Class overview | |
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Name | Kalvari class |
Builders | Mazagon Dock Limited |
Operators | ![]() |
Preceded by | |
Succeeded by | Project 75I-class submarine |
Cost | |
In commission | 2017 – present |
Planned | 9[1][2] |
On order | 3 |
Completed | 6 |
Active | 5 |
General characteristics | |
Type | Attack submarine |
Displacement |
|
Length | 67.5 m (221 ft 5 in)[3] |
Beam | 6.2 m (20 ft 4 in)[4] |
Height | 12.3 m (40 ft 4 in)[3] |
Draught | 5.8 m (19 ft 0 in)[4] |
Propulsion |
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Speed |
|
Range | |
Endurance | 50 days[6] |
Test depth | 350 metres (1,150 ft)[7] |
Complement |
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Electronic warfare & decoys | C303/S anti-torpedo countermeasure system[8] |
Armament |
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A namesake of the former Foxtrot-class submarines that the IN operated between 1967 and 2010, the class was originally planned in the late-1990s as an initial phase of a 30-year long naval rearmament roadmap to replace the IN's conventional submarine fleet, namely the Sindhughosh-class and Shishumar-class submarines.[11][10] India's Ministry of Defence (MoD) ordered an introductory batch of six submarines in 2005, at an initially-estimated cost of ₹13,000 crore (equivalent to ₹440 billion or US$5.3 billion in 2023); of the ordered six, five are currently in operational service.[12] In addition to the first batch, a proposal for the purchase of three more submarines was approved in 2023, at an estimated cost of ₹36,000 crore (US$4.3 billion).[13]
First introduced to operational service in 2017, the submarines are currently operated by the IN for a variety of missions, namely, littoral surveillance, intelligence gathering, anti-submarine warfare, anti-surface warfare and minelaying operations.[9]