Kalvari-class submarine

This article is about the modern Scorpène-class submarine variant; see Kalvari-class submarine (1967) for its Foxtrot-class predecessors.
INS Kalvari (S50), first submarine of the class
Class overview
Name: Kalvari class
Builders: Mazagon Dock Limited
Operators:  Indian Navy
Succeeded by: Project 75I-class submarine
In service: 2015
In commission: September 2016
Building: 5
Planned: 6 + 3
Completed: 1
Active: 0
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:
  • 20 knots (37 km/h) (submerged)
  • 12 kn (22 km/h) (surfaced)
Range:
  • 6,500 nmi (12,000 km) at 8 kn (15 km/h) (surfaced)
  • 550 nmi (1,020 km) at 5 kn (9.3 km/h) (submerged)
Endurance:
  • 40 days (compact)
  • 50 days (normal)
  • 50+21 days (AIP)
Test depth: 350 metres (1,150 ft) [1]
Complement: 31
Armament: 6 x 533-mm torpedo tubes for 18 Black Shark 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 at Mazagon Dock Limited in Mumbai.

Project history

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).[2] The submarines are to be manufactured under a technology transfer agreement by the state-owned Mazagon Docks in Mumbai.[3] 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.[4]

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.[5]

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.[6] The government announced that it would soon purchase three more submarines from France to bolster India’s naval power.[7]

The first Scorpène submarine, INS Kalvari (named after a deep sea tiger shark),[8] was launched to commence sea trials in April 2015.[9]

Ships of the class

The hull fabrication of all six submarines is now complete. The first Scorpène submarine will be delivered in September 2016, delivery of successive boats have been compressed to nine months and the project is expected to be completed by 2020.[10]

Name Pennant Builder Launched Commissioned Status
Flight I: Conventional[11]
INS Kalvari S50 Mazagon Dock Limited April 6, 2015[12] September 2016 On sea trials
INS Khanderi S51 Mazagon Dock Limited Preparing for Launch
S52 S52 Mazagon Dock Limited Under-construction
S53 S53 Mazagon Dock Limited Under-construction
Flight II: AIP[11]
S54 S54 Mazagon Dock Limited Under-construction
S55 S55 Mazagon Dock Limited Under-construction

References

  1. ↑ "Scorpene 1000". DCNS. Retrieved 8 April 2015.
  2. ↑ "Exocet Missiles, AIP Swing India Submarine Order". defense-aerospace.com. 13 September 2005. Retrieved 8 April 2015.
  3. ↑ "First Scorpene submarine to become reality soon". Deccan Herald. 27 August 2014. Retrieved 8 April 2015.
  4. ↑ Anandan, S. (25 March 2014). "DRDO developing onboard equipment monitoring system for submarines". The Hindu. Retrieved 8 April 2015.
  5. ↑ Pandit, Ranjat (28 August 2014). "Defence minister Arun Jaitley reviews delayed Scorpene submarine project". The Times of India. Retrieved 8 April 2014.
  6. ↑ "Indian-built Scorpene to carry critical DRDO system (Air Independent Propulsion)". DefenceRadar.com. 3 November 2014. Retrieved 8 April 2015.
  7. ↑ "India To Purchase 3 More French ‘Scorpene’ Submarines". InSerbia News. Retrieved 2015-12-25.
  8. ↑ Banerjee, Ajay (6 April 2015). "Parrikar undocks Scorpene sub". The Tribune. Retrieved 8 April 2015.
  9. ↑ "India's first Scorpene submarine INS Kalvari launched for sea trials". 7 April 2015. Retrieved 26 May 2015.
  10. ↑ "‘We see a bright future for defence ship construction’". The Financial Express. 2016-01-02. Retrieved 2016-01-02.
  11. 1 2 "Mazagon Dock Ltd likely to get fresh orders after Scorpene". The Economic Times. Times of India Group. Retrieved 2016-01-02.
  12. ↑ "INS Kalvari sea trials begin today: All you need to know about the attack submarine". Indian Express. Retrieved 2015-10-29.
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