Indian Navy Receives Mangrol, Third ASW-SWC 2026

Indian Navy Receives Mangrol, Third Anti-Submarine Warfare Shallow Water Craft

India has taken another important step in strengthening its naval defence capabilities. Mangrol, the third Anti-Submarine Warfare Shallow Water Craft (ASW-SWC) built by Cochin Shipyard Limited (CSL), has been delivered to the Indian Navy.

Mangrol is part of the Mahe-class ASW-SWC programme. These specialised warships are designed mainly for operations in coastal and shallow waters. They can detect, track and engage underwater threats.

The vessel also represents India’s growing ability to build advanced naval platforms domestically. The Mahe-class programme has a high level of indigenous content and supports the government’s Aatmanirbhar Bharat and Make in India initiatives.

Mangrol: Key Facts at a Glance

Official CSL information for the class gives a length of 78 metres, width of 11.36 metres, displacement of around 896 tonnes, maximum speed of 25 knots and endurance of about 1,800 nautical miles.

What Is Mangrol?

Mangrol is a specialised warship designed for Anti-Submarine Warfare, commonly called ASW.

Its main purpose is to operate close to India’s coastline. It is designed for areas where larger naval vessels may have operational limitations.

Submarines are among the most difficult military platforms to detect because they can remain hidden underwater. Specialised ships therefore use sonar, sensors and underwater weapons to find and counter them.

Mangrol has been designed specifically with these challenges in mind.

The vessel forms part of a series of eight ASW-SWC ships ordered from Cochin Shipyard Limited. The Ministry of Defence awarded the contract to CSL on 30 April 2019.

What Does ASW-SWC Mean?

ASW-SWC stands for:

Anti-Submarine Warfare Shallow Water Craft

The name explains the ship’s main role.

Anti-Submarine Warfare refers to military operations used to detect, track, deter or engage hostile submarines.

Shallow Water Craft means that the vessel is designed to perform effectively in relatively shallow coastal waters.

These waters are strategically important. They include areas near ports, naval bases, coastal installations and important maritime routes.

Why Does the Indian Navy Need ASW-SWC Ships?

India has a coastline stretching thousands of kilometres. It also has important ports, naval bases, offshore infrastructure and busy shipping routes.

Underwater threats close to the coast can therefore create serious security challenges.

A specialised ASW vessel can patrol these areas and search for suspicious underwater activity.

The Mahe-class ships are intended to undertake anti-submarine operations in coastal waters as well as other maritime missions. The programme will strengthen the Indian Navy’s ability to conduct operations in shallow-water environments.

Main Capabilities of Mangrol

Mangrol is not designed for only one task. Its configuration allows it to perform several important missions.

Its major roles include:

• Anti-submarine warfare in coastal waters
• Underwater surveillance
• Detection and tracking of underwater threats
• Low Intensity Maritime Operations
• Mine-laying operations
• Search and surveillance missions
• Protection of strategically important coastal areas

The combination of sensors, sonar and underwater weapons gives the vessel an important role in coastal maritime security.

Anti-Submarine Warfare

The most important function of Mangrol is Anti-Submarine Warfare.

Modern submarines are designed to operate quietly. They can remain underwater for long periods and may be difficult to detect.

This creates a unique challenge for surface vessels.

ASW ships use specialised underwater sensors to search for submarine activity. Once a possible underwater target is detected, the information can be analysed and tracked.

Weapons such as lightweight torpedoes and anti-submarine rockets can then provide an engagement capability.

Mangrol therefore acts as both a surveillance platform and a combat platform against underwater threats.

Advanced Sonar Systems

Sonar is one of the most important technologies on an anti-submarine vessel.

The word SONAR comes from Sound Navigation and Ranging.

Unlike radar, which mainly uses radio waves, sonar relies on sound propagation through water.

It can help detect objects beneath the sea surface.

The Mahe-class vessels are designed to carry indigenously developed, state-of-the-art sonar systems for underwater surveillance.

This capability is particularly important in shallow waters, where underwater detection can be complicated by seabed conditions, coastal activity and other sources of noise.

Weapons on the ASW-SWC

The class is equipped with weapons intended to counter underwater threats.

These include lightweight torpedoes and anti-submarine rockets.

A torpedo is a self-propelled underwater weapon designed to travel through water toward a target.

Anti-submarine rockets provide another means of attacking underwater threats.

CSL’s information on the preceding ship Malwan confirms that vessels of this design are fitted with state-of-the-art lightweight torpedoes, indigenous ASW rockets and advanced shallow-water sonar.

Together, these systems provide the ships with detection and engagement capabilities.

Waterjet Propulsion

One of the notable features of the Mahe-class ASW-SWC is its waterjet propulsion system.

Instead of relying only on a conventional propeller arrangement, waterjet propulsion takes in water and expels it at high velocity to generate thrust.

This arrangement can provide good manoeuvrability, which is useful during operations in coastal and shallow waters.

CSL describes the 78-metre ships as major Indian naval warships using a diesel engine-waterjet propulsion system.

Size and Performance

Mangrol is a compact warship compared with large destroyers and frigates. However, it has been purpose-built for a very different operational environment.

The CSL design is approximately 78 metres long and 11.36 metres wide.

Its draught is around 2.7 metres.

The displacement is approximately 896 tonnes.

The design has a maximum speed of around 25 knots and an endurance of approximately 1,800 nautical miles.

These characteristics make the class suitable for coastal patrol and anti-submarine missions.

The Mahe-Class ASW-SWC Project

Mangrol belongs to the Mahe class.

The Ministry of Defence signed the contract with Cochin Shipyard Limited on 30 April 2019 for the construction of eight ASW-SWC vessels.

The ships are intended to replace older Abhay-class ASW corvettes and improve the Navy’s ability to conduct anti-submarine operations in coastal waters.

The project also covers Low Intensity Maritime Operations and mine-laying roles.

The eight vessels are being built progressively by CSL in Kochi.

Mahe, Malvan and Mangrol

The first three CSL vessels were launched together at Kochi on 30 November 2023.

They were assigned the names:

1. Mahe
2. Malvan
3. Mangrol

At the time of their launch, they were identified as CSL Yard Nos. BY 523, BY 524 and BY 525 respectively.

Mangrol is therefore the third ship in the eight-vessel ASW-SWC series being constructed by Cochin Shipyard.

INS Malvan and the Progress of the Programme

The programme has been progressing steadily.

Malwan, the second vessel, was delivered by CSL to the Indian Navy on 31 March 2026.

It was subsequently commissioned as INS Malvan at Karwar on 22 July 2026. The commissioning strengthened the Navy’s shallow-water anti-submarine warfare capabilities.

The delivery of Mangrol represents the next important stage in the CSL-built Mahe-class programme.

Why Is the Ship Named Mangrol?

Indian naval vessels often carry names connected with India’s geography, maritime history and coastal heritage.

Mangrol is the name of a coastal town in Gujarat.

The choice fits the broader naming pattern of the class, in which ships carry names linked to India’s coastal geography.

It also carries a naval legacy because an earlier Indian Navy vessel bore the Mangrol name.

Reusing historic ship names is a way of maintaining continuity between earlier generations of naval vessels and modern platforms.

Importance of Shallow-Water Warfare

Deep-sea naval operations often receive more attention. However, shallow coastal waters can be equally important from a security perspective.

They are close to ports and major population centres.

They can also contain important shipping routes, naval installations and economic infrastructure.

The underwater environment in these areas can be difficult to monitor.

Smaller and highly manoeuvrable ASW vessels can therefore complement larger warships.

They can patrol coastal areas and provide specialised underwater surveillance where required.

Mangrol and Aatmanirbhar Bharat

One of the most important aspects of the ASW-SWC programme is indigenisation.

The Ministry of Defence has said that the CSL-built ships have over 80% indigenous content.

This means a large proportion of the vessel’s systems, equipment, construction work and associated components comes from India’s domestic industrial ecosystem.

It supports the government’s Aatmanirbhar Bharat initiative.

The programme also strengthens India’s domestic expertise in naval design, shipbuilding, marine engineering, sensors and defence manufacturing.

Why Indigenous Defence Manufacturing Matters

Building warships within India has several long-term benefits.

It reduces dependence on imported defence platforms and equipment.

It creates technical knowledge inside the country.

It supports Indian shipyards and defence manufacturers.

It also creates opportunities for smaller suppliers and specialised engineering companies.

Most importantly, domestic manufacturing can give India greater control over maintenance, upgrades and future development of naval platforms.

The ASW-SWC programme is therefore important not only for the Navy but also for India’s wider defence-industrial ecosystem.

Role of Cochin Shipyard Limited

Cochin Shipyard Limited is one of India’s major shipbuilding and ship-repair companies.

It was incorporated in 1972 and operates its major shipbuilding facilities in Kochi, Kerala.

CSL has experience in both commercial and defence shipbuilding.

The ASW-SWC project demonstrates the shipyard’s growing role in constructing sophisticated vessels for the Indian Navy.

Completing a series of specialised anti-submarine ships requires expertise in hull construction, propulsion, sensors, weapons integration and complex naval systems.

Strategic Importance for India

Mangrol’s importance goes beyond the addition of another ship to the fleet.

India sits at the centre of the Indian Ocean region.

Major international shipping routes pass through the wider region. India’s economy also depends heavily on maritime trade.

Protecting coastal waters and sea lines of communication is therefore an important national security requirement.

INS Malvan’s commissioning in July 2026 also highlighted the importance of securing sea lines of communication for uninterrupted maritime trade and economic growth.

Specialised ASW ships strengthen one part of this broader maritime security network.

Mangrol for Competitive Exams

Mangrol is important for current affairs preparation, especially for examinations such as UPSC, SSC, NDA, CDS, AFCAT, Banking, Railways and State PSC exams.

Students should remember the following points:

• Mangrol is an Anti-Submarine Warfare Shallow Water Craft.
• It belongs to the Mahe class.
• It has been built by Cochin Shipyard Limited.
• CSL is building eight ASW-SWC vessels under the project.
• The contract was signed on 30 April 2019.
• The ships are designed mainly for anti-submarine operations in coastal waters.
• They can also undertake Low Intensity Maritime Operations and mine-laying missions.
• The class uses waterjet propulsion.
• It carries specialised underwater sensors and ASW weapons.
• The project supports Aatmanirbhar Bharat and Make in India.
• The vessels have a high level of indigenous content.

Important Current Affairs Questions and Answers

Q1. What is Mangrol?
Mangrol is a Mahe-class Anti-Submarine Warfare Shallow Water Craft built for the Indian Navy.

Q2. Who built Mangrol?
It was built by Cochin Shipyard Limited in Kochi.

Q3. What does ASW-SWC stand for?
Anti-Submarine Warfare Shallow Water Craft.

Q4. Which class does Mangrol belong to?
It belongs to the Mahe class.

Q5. How many ASW-SWC vessels is CSL building under the project?
Eight vessels.

Q6. When was the contract for the eight CSL ASW-SWC vessels signed?
The contract was signed on 30 April 2019.

Q7. What is the primary role of Mangrol?
Its primary role is anti-submarine warfare in coastal and shallow waters.

Q8. What propulsion system is used by the class?
A diesel engine-waterjet propulsion system.

Q9. What are some important weapons associated with the class?
Lightweight torpedoes and indigenous anti-submarine rockets.

Q10. What sensors are important for underwater surveillance?
Advanced shallow-water sonar systems.

Q11. What is the approximate length of the CSL ASW-SWC design?
About 78 metres.

Q12. What is its maximum design speed?
Around 25 knots.

Q13. What is the approximate endurance?
Around 1,800 nautical miles.

Q14. Which government initiative does the project support?
Aatmanirbhar Bharat and Make in India.

Why Mangrol Matters

The delivery of Mangrol is important for three main reasons.

First, it improves India’s ability to detect and counter underwater threats in coastal waters.

Second, it strengthens the Indian Navy with a modern, specialised shallow-water warfare platform.

Third, it highlights the growing capability of India’s domestic shipbuilding and defence manufacturing industries.

The vessel combines indigenous shipbuilding, modern sonar, specialised underwater weapons and waterjet propulsion in a platform designed specifically for India’s coastal security requirements.

Conclusion

The delivery of Mangrol marks another important milestone in the modernisation of the Indian Navy.

As the third ASW-SWC in Cochin Shipyard Limited’s eight-vessel programme, Mangrol will contribute to stronger anti-submarine warfare and underwater surveillance capabilities in India’s coastal waters.

Its specialised sensors, sonar, lightweight torpedoes, anti-submarine rockets and waterjet propulsion make it well suited for shallow-water operations.

At the same time, the programme has wider national significance. Its high indigenous content demonstrates India’s growing ability to design, build and integrate sophisticated naval platforms at home.

Mangrol is therefore more than a new warship. It represents the combination of maritime security, indigenous technology, defence manufacturing and India’s Aatmanirbhar Bharat vision.

For current affairs students, the key connection is simple to remember:

Mangrol → Mahe class → ASW-SWC → Cochin Shipyard Limited → Indian Navy → Anti-Submarine Warfare → Aatmanirbhar Bharat.