Kamorta-class corvette

INS Kamorta during sea trials before commissioning
Class overview
Name: Kamorta class
Builders: GRSE
Operators:  Indian Navy
Preceded by:
Succeeded by: Project 28A
Cost: ₹28 billion (US$416 million)-₹70 billion (US$1 billion)[1]
Built: 2006–
Building: 2
Planned: 4
Active: 2
General characteristics (Project 28)
Type: ASW Corvette
Displacement:

Standard: 2800 tonnes

Full load: 3400 tonnes[2]
Length: 109.1 m (358 ft)
Beam: 13.7 m (45 ft)
Propulsion:
  • 4 × Pielstick 12 PA6 STC Diesel engines
  • CODAD, DCNS raft mounted gearbox
Speed: 25 kn (46 km/h; 29 mph) [2]
Range: 3,500 nmi (6,500 km; 4,000 mi) at 18 kn (33 km/h; 21 mph)
Complement: 13 Officers and 180 sailors[3]
Sensors and
processing systems:
  • Revati Central Acquisition Radar
  • EL/M-2221 STGR fire-control radar
  • BEL Shikari
  • BEL RAWL02 (Signaal LW08) antenna communication grid – Gigabit Ethernet-based integrated ship borne data network, with a fibre optic cable backbone running through the vessel
  • HUMSA -NG Bow Mounted Sonar
  • Bomber Electronic warfare (EW) suites – BEL Sanket Mk III
Electronic warfare
& decoys:		 DESEAVER MK-II
Armament:
Aircraft carried: 1 Westland Sea King Mk.42B

Kamorta-class corvettes are the Indian Navy's new-generation anti submarine warfare platform, built under Project 28. They are being built at Garden Reach Shipbuilders & Engineers (GRSE), Kolkata. All the four corvettes are planned to be handed over to the Indian Navy by the year 2017.[5]

Project 28 is the primary project for driving localization and developing the warship construction industry in India.[1] The aim with this project is to stipulate unprecedented standards while providing opportunities to Indian vendors to develop expertise with the technology. The project, driven by the Navy's Directorate of Indigenisation, has been delayed by two years with a cost overrun from the originally estimated ₹28 billion (US$416 million) to ₹70 billion (US$1 billion), primarily to meet this goal.

The order for the first four corvettes was placed in 2003, with construction commencing on 12 August 2005.

Design and Description

The basic design for Project 28 was specified by the Indian Navy's Directorate of Naval Design, with the detailed design by GRSE.[6] The design includes many stealth ship features, including reductions in acoustic signature and vibration of the vessels.[7] Displacing around 3,400 tonnes and a length of around 110 meters, these vessels have about 90% of Indian made equipment – either designed indigenuously or built under license through technology transfer agreements.[8]

The DMR 249A hull steel is produced by SAIL (Steel Authority of India Limited). The main machinery is raft mounted to reduce acoustic and vibration signatures. Each gear unit and the associated engines are mounted on a common raft. The vessel features automated control and battle damage systems and use diesel engines built by Pielstick of France. DCNS supplied the noise-suppressing raft-mounted gearbox for CODAD propulsion. Wärtsilä India manufactured the low-vibration diesel alternators to power the on-board electronics.[1] Other signature management control features are built in to combat the ship's infrared signature, radar cross-section, noise and magnetic outputs. Two independent interconnected switchboards optimize redundancy and reliability.

Indian Navy's computer generated design of the Project 28 Kamorta-class corvette.

It was announced on 21 December 2006 that GRSE awarded France's DCNS a contract to provide a comprehensive engineering package of raft mounted Propulsion Power Transmission Systems (PPTS) for the four corvettes. Under the contract, DCNS will deliver four propulsion packages (consisting of eight reduction gear units on cradles and either thrust blocks) to GRSE. The company will also provide support to GRSE for the mechanical integration of the propulsion plant. DCNS is partnering with Walchandnagar Industries Limited, to provide the raft mounts and other components, including thrust blocks and systems auxiliaries. The first propulsion package was delivered in 2008, with the remaining three to follow at the rate of one per year until 2011.[9]

The ships also includes an integrated ship management system (ISMS) from L-3 MAPPS which combines an integrated platform management system and bridge management system into a single integrated system.[10] This class of ships has a multitude of networks such as Total Atmospheric Control System (TACS), Integrated Platform Management System (IPMS), Integrated Bridge System (IBS), Battle Damage Control System (BDCS) and Personnel Locator System (PLS) to provide a contemporary and process oriented system for optimal functioning of the warship. The ship is equipped to fight in Nuclear, Biological and Chemical (NBC) warfare conditions and includes rail-less helo traversing system and foldable hangar door for the integral ASW helicopter. [8]

The superstructures of INS Kiltan and INS Kavaratti are being constructed with composite material. This will reduce their weights as well as add to stealth capabilities. This is the first time that a shipyard in the country is experimenting with composite material developed in Sweden. The two ships will also have many more advanced features and modern armaments, making them more potent than the first two vessels of the class.[11][12][13]

Armament

The armament is to include a license-built OTO Melara 76 mm Super Rapid gun in a stealth mount and a weapons layout similar to what is found on the Talwar-class and Shivalik-class frigate including two Larsen & Toubro built derivatives of the RBU-6000 anti-submarine rocket launcher, as well as Larsen & Toubro torpedo launchers. Revati, the naval variant of the DRDO-made Central Acquisition Radar (CAR), is a confirmed sensor aboard the vessel. Hangar and aviation facilities will also be standard features.[14]

It was announced that Barak 8 missiles (LRSAM) will be deployed on this class.[15]

Ships of the class

All the ships names of the class are reincarnations of ships from the previous Arnala-class corvettes which are considered the spiritual predecessors of the Kamorta class. [16]

Name Pennant Laid down Launched Commissioned Home-port
INS Kamorta P 28 20 November 2006 19 April 2010 23 August 2014[17][18] Visakhapatnam
INS Kadmatt[19] P 29 27 September 2007 24 October 2011[20] 7 January 2016[21][22][23] Visakhapatnam
INS Kiltan P 30 10 August 2010[24] 26 March 2013[25] September 2016 Undecided
INS Kavaratti[19] P 31 20 January 2012 19 May 2015 Before end 2017 Undecided

See also

References

  1. 1 2 3 Shukla, Ajai (1 August 2009). "Warship project delayed to build up private sector". Business Standard. Retrieved 27 September 2014.
  2. 1 2 "India's first indigenous anti-submarine warfare ship ready". Times of India. 24 June 2014. Retrieved 27 September 2014.
  3. ↑ "Indian Navy commissions second Kamorta-class ASW corvette | IHS Jane's 360". www.janes.com. Retrieved 2016-04-27.
  4. ↑ "Indian Navy commissions second Kamorta-class ASW corvette | IHS Jane's 360". www.janes.com. Retrieved 2016-04-27.
  5. ↑ "Indian Navy to get four new destroyers". New Corvettes. DNA. 17 March 2009. Retrieved 27 September 2014.
  6. ↑ "Project 28 ASW Corvette". globalsecurity.org. 27 February 2014. Retrieved 27 September 2014.
  7. ↑ Malik, Amarjeet. "Anti-submarine corvette for Navy next year". Georgians News. General Military School. Retrieved 27 September 2014.
  8. 1 2 "INS Kadmatt commissioned at Visakhapatnam | Indian Navy". indiannavy.nic.in. Retrieved 2016-05-05.
  9. ↑ Archived 18 February 2009 at the Wayback Machine.
  10. ↑ "The Power of Two: Combined IPMS + IBS for the Indian Navy P28 Stealth Corvettes" (PDF). MCS News. June 2010. Retrieved 27 September 2014.
  11. ↑ "GRSE’s last two ASW corvettes to be very advanced: Navy - Times of India". The Times of India. Retrieved 2016-01-01.
  12. ↑ "INS Kavaratti launched - Times of India". The Times of India. Retrieved 2016-01-01.
  13. ↑ "Navy experimenting with composite superstructure for warships - The Economic Times". The Economic Times. Retrieved 2016-01-01.
  14. ↑ "Indian Navy commissions second Kamorta-class ASW corvette | IHS Jane's 360". www.janes.com. Retrieved 2016-04-27.
  15. ↑ "Indian Navy test-fires missile developed with Israel". Retrieved 2015-12-29.
  16. ↑ Shukla, Ajai (24 August 2014). "India gets its first “90 per cent indigenous” warship". Business Standard. Visakhapatnam.
  17. ↑ The Times of India (12 July 2014). "Navy to commission two ships next month". Times of India. Retrieved 27 September 2014.
  18. ↑ "First Indigenously Built Stealth ASW Corvette ‘INS Kamorta’ Commissioned in Indian Navy". navyrecognition.com. 23 August 2014. Retrieved 27 September 2014.
  19. 1 2 "India Launches 2nd Home-built P28 Anti-Sub Corvette". livefistdefence.com. 25 October 2011. Retrieved 27 September 2014.
  20. ↑ Anandan, S. (12 June 2011). "Delivery of INS Kamorta next June". Times of India. Retrieved 27 September 2014.
  21. ↑ Rajib Chowdhuri (26 November 2015). "Anti-sub warship to join Navy fleet today". Asian Age.
  22. ↑ "ASW corvette INS Kadmatt to be commissioned at Vizag tomorrow - The Economic Times". The Economic Times. Retrieved 2016-01-06.
  23. ↑ "Navy chief to commission INS Kadmatt today - The Hans India". www.thehansindia.com. Retrieved 2016-01-06.
  24. ↑ "Keel Laying – Anti Submarine Warfare Corvette GRSE Yard No. 3019" (PDF). Archived from the original (PDF) on 19 July 2011.
  25. ↑ "Indian Navy's 3rd P28 ASW Corvette Kiltan Launched". livefistdefence.com. 26 March 2013. Retrieved 27 September 2014.

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