Kalvari-class submarine
INS Kalvari during sea trials
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| Class overview | |
|---|---|
| Name: | Kalvari class |
| Builders: | Mazagon Dock Limited |
| Operators: |
 Indian Navy
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| Succeeded by: | Project 75I-class submarine |
| In commission: | Mid-2017 |
| Building: | 4 |
| Planned: | 6 |
| Completed: | 2 |
| General characteristics | |
| Type: | Attack submarine |
| Displacement: | 1,870 tonnes (2,060 short tons) (AM-2000) |
| Length: | 61.7 m (202 ft) (AM-2000) |
| Beam: | 6.2 m (20 ft) |
| Draught: | 5.8 m (19 ft) |
| Propulsion: | Diesel-electric, batteries, and AIP |
| Speed: |
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| Range: |
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| Endurance: |
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| Test depth: | 350 metres (1,150 ft) |
| Complement: | 31 |
| Armament: | 6 x 533 mm (21 in) torpedo tubes for 18 heavyweight torpedoes/Varunastra torpedo or SM.39 Exocet antiship missiles, 30 mines in place of torpedoes |
The Kalvari class is a class of submarines based on the Scorpène-class submarine being built for the Indian Navy. It is a class of diesel-electric attack submarine which is designed by French naval defence and energy company DCNS and being manufactured by Mazagon Dock Limited in Mumbai.
In 2005, India chose the Scorpène design; purchasing six submarines for US$3 billion ($500 million per boat) under Project 75 (P75). The project was necessitated by the dwindling number of submarines in the Indian Navy. Indian Navy needed replacement for the older Sindhughosh (Kilo) and Shishumar (U209) class of submarines. The Scorpène design won the deal, defeating the rival U214 because of the capability to fire Exocet anti-ship missiles and an agreement on the air-independent propulsion (AIP). The submarines are to be manufactured under a technology transfer agreement by the state-owned Mazagon Docks in Mumbai. India plans to incorporate the DRDO-developed air independent propulsion (AIP) system onto the last two submarines being built and also to equip the P75I submarines, of which the DCNS is participating in the tender process.
Construction of the first submarine started on 23 May 2009. The project is running four years behind schedule. Once the new government under Prime Minister Narendra Modi took over, the project was reviewed and necessary action was taken to make up for the delay.
It was reported in November 2014, that the DRDO-developed AIP system for the last two Scorpène submarines for the Indian Navy has been developed and is ready for testing in February 2015. The government was finalizing an order for additional three more Kalvari class submarines but in September 2016, the NDA government decided not to buy them.
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Wikipedia