INS Mangrol (2023)

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INS Mahe (P80) an ASWSWC class corvette at sea (cropped).jpg
Mahe (P80), an ASW-SWC class corvette at sea.
History
Naval Ensign of India.svg India
NameINS Mangrol
Namesake Mahé, India
Owner Indian Navy
Operator Indian Navy
Ordered30 April 2019
Builder Cochin Shipyard
Cost₹789 crore (US$93 million) (FY2020)
Yard number524
Laid down21 February 2023
Launched30 November 2023
StatusLaunched
General characteristics
Type Anti-Submarine Warfare Shallow Water Craft
Displacement896–1,100 t (882–1,083 long tons) [1] [2]
Length78 m (255 ft 11 in) [3]
Beam11.26 m (36 ft 11 in) [3]
Draft2.7 m (8 ft 10 in) [3]
Propulsion Water-jet propulsion [4]
Speed25 knots (46 km/h; 29 mph)
Range1,800  nmi (3,300 km; 2,100 mi) at 14 knots (26 km/h; 16 mph) [5]
Endurance14 days
Boats & landing
craft carried		1 x RHIB
Crew57 (7 officers + 50 sailors)
Sensors &
processing systems
  • Combat suite:
  • ASW Combat Suite (presumably the DRDO-developed IAC MOD 'C' combat suite) [6] [7]
  • Sonar:
  • DRDO Abhay Hull-Mounted Sonar (HMS) [8]
  • Low Frequency Variable Depth Sonar (LFVDS) [6]
  • Management systems:
  • Fire Control System (FCS)
  • Integrated Platform Management System (IPMS) [6]
  • Automatic Power Management System (APMS) [6]
  • Battle Damage Control System (BDCS) [6]
Armament
NotesLargest class of waterjet-powered vessels in the Indian Navy.

INS Mangrol is the third ship of the Mahe class of the Anti-Submarine Warfare Shallow Watercraft operated by the Indian Navy.

Contents

History

Background

On 23 December 2013, the Defence Acquisition Council (DAC) –- the main acquisition panel subordinate to India's Ministry of Defence (MoD), approved the procurement of sixteen anti-submarine warfare (ASW) vessels capable of operating in shallow waters, at a cost of ₹ 13,440 crore (equivalent to ₹230 billionorUS$2.7 billion in 2023), to replace the ageing Abhay-class corvettes of the Indian Navy – which were commissioned between 1989 and 1991. This includes the development of the vessels with about 700 t (690 long tons; 770 short tons) displacement and an operational radius of 200 nmi (370 km; 230 mi) from its home port. They would be built by Garden Reach Shipbuilders and Engineers (GRSE). [10] [11]

In June 2014, the MoD issued a tender, worth USD2.25 billion under the 'Buy and Make India' category to private-shipyards – including Larsen & Toubro (L&T), ABG Shipyard, Pipavav Defense and Offshore Engineering, Goa Shipyard (GSL) and Garden Reach Shipbuilders & Engineers (GRSE), for the procurement of the 16 anti-submarine vessels. [12]

In October 2017, Cochin Shipyard (CSL) and Garden Reach Shipbuilders & Engineers (GRSE) emerged as the first and the second-lowest bidder in the tender, respectively. CSL had quoted a value of ₹5,400 crore (US$829.22 million) while GRSE had to match the bid value of CSL in order to get the contract. [13]

Purchase

On 29 April 2019, the MoD and GRSE signed a contract, valued at ₹6,311.32 crore (equivalent to ₹78 billionorUS$930 million in 2023), for eight anti-submarine vessels, to be delivered between 2022 and 2026. The contract mandates the first vessel to be delivered within 42 months of the date of signing, with the remaining seven vessels delivered at a rate of two ships per year within 84 months. [14] [15]

On 30 April 2019, the MoD and CSL signed a similar contract for the construction of the remaining eight vessels – within a deadline of 84 months. [16] Under this contract, the first ship was also expected to be delivered within a span of 42 months, with subsequent deliveries of two ships per year. [15] [17] [18]

Construction

The keel laying ceremony of the Mangrol (BY 524) was conducted on 21 February 2023. [19] The first three ships of the class, christened as Mahe, Malwan and Mangrol were launched simultaneously launched on 30 November 2023. [20] [21]

Namesake

The ship, Mangrol, was named after the former minesweeper that was in service with the Indian Navy between 1983 and 2004. The minesweepers and these vessels inherit their name from multiple ports.

Design

This section is an excerpt from INS Mahe (2022) § Design.[ edit ]

The basic design of the ships have been sourced from Kochi-based Smart Engineering & Design Solutions (SDES) followed by detailed design by the shipyard. Additionally, Finland-based Surma provided the signature management software and design inputs for combat survivability features. [22] The ships are being constructed as per the classification rules of Det Norske Veritas (DNV). [23] [24] The ships have indigenous content of over 80%, with equipment and materials being sourced from Bharat Electronics, Mahindra Defence, and Larsen & Toubro among others. [25] [26]

Mahe-class has a displacement of 896–1,100 t (882–1,083 long tons). [27] [28] The class of warships is considered as the largest warship of the Indian Navy to be designed and propelled by pump-jet technology. The warship is equipped with three marine diesel engines, developing a power output of 6 MW, [29] and is coupled with a water jet each. By dimensions, the ship measures 78 m (256 ft) by length and 11.36 m (37.3 ft) by width with a draft of 2.7 m (8 ft 10 in). The ships offers a maximum speed of 25 kn (46 km/h; 29 mph) and a maximum range of 1,800 nmi (3,300 km) at a speed of 14 kn (26 km/h) with an endurance of 14 days. [26] [30] [29]

Weapons

This section is an excerpt from INS Mahe (2022) § Weapons.[ edit ]

The weapons suite of Mahe-class is designed to support its intended anti-submarine warfare operations in shallow waters. The anti-submarine weapons that equip the ship includes a forward-mounted RBU-6000, a triple 324 mm lightweight torpedo tube each on port and starboard equipped with Advanced Light-Weight Torpedo (ALWT) at the aft and anti-submarine mine-laying rails. Behind the torpedo tubes, two Mahindra Defence Systems-supplied [31] [32] [33] torpedo decoy launching systems (DLS), as a part of the Integrated Anti-Submarine Warfare Defence Suite (IADS). [30]

For surface warfare and self-defence, the ship employs a Naval Surface Gun (30 mm), [34] which serves the role of main gun as well as two OFT 12.7 mm M2 Stabilized Remote Controlled Gun (SRCG) as general-purpose machine guns. The SRCG is the Indian variant of Elbit Systems' Remote Controlled Naval Weapon Station (RCNWS). [30]

Sensors

This section is an excerpt from INS Mahe (2022) § Sensors.[ edit ]

As part of its sensor suite, Mahe-class is equipped with Abhay compact active hull-mounted sonar (HMS), a towed low-frequency variable-depth sonar (LFVDS) procured from a joint venture firm between Indian CFF Fluid Control Ltd. and German Atlas Elektronik, a division of ThyssenKrupp Marine Systems (TKMS) along with an underwater acoustic communication system (UWACS). [30]

The Abhay active sonar system — developed by DRDO's Naval Physical and Oceanographic Laboratory (NPOL) and manufactured by Bharat Electronics Limited (BEL) — includes transducer array, data acquisition system, power amplifier and the dual multi-function console (DMFC). The system utilises advanced adaptive signal and information processing techniques to detect, track and classify of targets. [35] The compact system helps in the application of the systems onto smaller category of naval warships like Shallows Water Crafts, Light Frigates & Patrol Vessels by replacing legacy Russian sonar. Earlier, hull-mounted sonars were only limited to frigates and destroyers. [36]

The ships are also equipped with Electronic Support Measures (ESM), Electronics Intelligence (ELINT) and a combat management system. [30]

See also

References

  1. ↑ "Cochin Shipyard to launch three advanced vessels". The Hindu. 16 October 2025. ISSN   0971-751X . Retrieved 24 October 2025.
  2. ↑ "Delivery of 'Mahe' - first Anti-Submarine Warfare Shallow Water Craft built by CSL, Kochi" (Press release). Press Information Bureau. 24 October 2025. Retrieved 24 October 2025.
  3. 1 2 3 Kurus (16 November 2018). "Details of Indian Anti-submarine Corvette For Coastal Waters | Indian Politics". www.indianpolitics.co.in. Archived from the original on 1 November 2025. Retrieved 28 December 2025.
  4. ↑ "Touted As 'Game-Changer', What Are Indian Navy's 'Anti-Submarine Warfare Shallow Water Crafts'?". Latest Asian, Middle-East, EurAsian, Indian News. 27 December 2021.
  5. ↑ "GRSE starts ASW-SWC corvette production in partnership with Larsen & Toubro". Janes.com. Archived from the original on 13 June 2023. Retrieved 28 December 2025.
  6. 1 2 3 4 5 "NIE No. GRSE/GMD/ASW-SWC/12/01 Expression of Interest (EOI) For Design of Anti Submarine Warfare Shallow Water Craft (ASW-SWC) for Indian Navy" (PDF). grse.in. Archived from the original (PDF) on 18 April 2021.
  7. ↑ "Garden Reach Shipbuilders & Engineers Ltd.- Government of India Undertaking - Tender Archive". grse.in.
  8. ↑ "Eyes and Ears Underwater". Force India. Retrieved 23 August 2024.
  9. ↑ Mitsopoulos, Dimitris (25 June 2025). "India Commissions Its First ASW-SWC Corvette". Naval News. Retrieved 28 December 2025.
  10. ↑ Bhatnagar, Gaurav Vivek (24 December 2013). "Four major acquisitions for the Navy and the Army approved". The Hindu. ISSN   0971-751X. Archived from the original on 15 September 2025. Retrieved 17 October 2017.
  11. ↑ Prasad, KV (25 December 2013). "MoD clears Navy plans to get 16 shallow-water anti-sub vessels". Tribune India. Archived from the original on 29 August 2025. Retrieved 15 September 2025.
  12. ↑ "India issues $2.25bn tender to procure ASW shallow-water craft". Naval Technology. 18 June 2014. Archived from the original on 15 September 2025. Retrieved 15 September 2025.
  13. ↑ "Garden Reach Shipbuilders set to win ₹5,400-crore Navy order". BusinessLine. 16 January 2018. Retrieved 15 September 2025.
  14. ↑ Himatsingka, Anuradha (29 April 2019). "GRSE signs contract for 8 anti-submarine warfare shallow water crafts for Indian Navy". The Economic Times. ISSN   0013-0389 . Retrieved 15 September 2025.
  15. 1 2 "Contract Signing with M/S CSL and M/S GRSE for Acquisition of Sixteen Anti Submarine Warfare Shallow Water Craft (ASW SWC) for Indian Navy" (Press release). Press Information Bureau. 30 April 2019. Retrieved 15 September 2025.
  16. ↑ "GRSE Signs Contract for 08 Anti-Submarine Warfare Shallow Watercraft". psuwatch.com. 29 April 2019.
  17. ↑ "Cochin Shipyard gets Rs 6,311 crore contract for anti-submarine warfare ships". Business Today. 30 April 2019.
  18. ↑ "Cochin Shipyard gets ₹6,311 crore contract for anti-submarine warfare ships". mint. 30 April 2019.
  19. ↑ "Keel laying for Second ship (BY 525, Mangrol) and third ship (BY 525, Mangrol), at M/s CSL, Kochi, on 21 Nov 23" (Press release). Press Information Bureau. 21 February 2023. Retrieved 28 November 2025.
  20. ↑ "Simultaneous launch of 'Mahe, Malvan and Mangrol', first three ships of ASW SWC(CSL) project on 30 Nov 23 at CSL, Kochi" (Press release). Press Information Bureau. 30 November 2023. Retrieved 24 October 2025.
  21. ↑ "Three anti-submarine warfare ships for Indian Navy launched at Cochin Shipyard". The Hindu. 30 November 2023. ISSN   0971-751X . Retrieved 30 November 2023.
  22. ↑ Mazumdar, Mrityunjoy (7 December 2020). "Indian ASW corvette programme cuts first steel | Shephard". www.shephardmedia.com. Retrieved 19 October 2025.
  23. ↑ "CSL delivers warship INS Mahe to Indian Navy". The Hindu. 23 October 2025. ISSN   0971-751X . Retrieved 23 October 2025.
  24. ↑ "Cochin Shipyard delivers first of eight warship 'Mahe' to Indian Navy". The Economic Times. 23 October 2025. ISSN   0013-0389 . Retrieved 23 October 2025.
  25. ↑ "Delivery of 'Mahe' - first Anti-Submarine Warfare Shallow Water Craft built by CSL, Kochi" (Press release). Press Information Bureau. 24 October 2025. Retrieved 24 October 2025.
  26. 1 2 "Strategic significance of INS Mahe and why Navy is inducting 16 such ships". The Indian Express. 27 November 2025. Retrieved 27 November 2025.
  27. ↑ "Cochin Shipyard to launch three advanced vessels". The Hindu. 16 October 2025. ISSN   0971-751X . Retrieved 24 October 2025.
  28. ↑
  29. 1 2 "Aatmanirbhar Bharat boost: Navy commissions 'silent hunter' INS Mahe". The Times of India. 24 November 2025. ISSN   0971-8257 . Retrieved 27 November 2025.
  30. 1 2 3 4 5 Menon, Adithya Krishna (27 November 2025). "Indian Navy Commissions First ASW Craft Built by Cochin Shipyard". Naval News. Retrieved 27 November 2025.
  31. ↑ "MoD signs Rs 1,350 crore contract for Integrated Anti-Submarine Warfare Defence Suites with an Indian company" (Press release). Press Information Bureau. 27 August 2021. Retrieved 13 July 2025.
  32. ↑ "Mahindra Defence to Manufacture Integrated ASW Defence Suite for Indian Navy" (Press release). Mahindra. 27 August 2021. Retrieved 13 July 2025.
  33. ↑ Staff, D. A. (14 January 2022). "Integrated Anti-Submarine Warfare Defense for Indian Navy". Defense Advancement. Retrieved 13 July 2025.
  34. ↑ "In a major boost to Indian Navy's firepower, indigenous Naval Surface Gun aces sea trials". The Week. Retrieved 28 May 2025.
  35. ↑ Mitsopoulos, Dimitris (25 June 2025). "India Commissions Its First ASW-SWC Corvette". Naval News. Retrieved 26 June 2025.
  36. ↑ "Indigenously Developed Sonars" (Press release). Press Information Bureau. 16 December 2016. Retrieved 13 July 2025.
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