AM/NS India Supplies Specialised Steel for Indian Navy Warship INS Mangrol

ArcelorMittal Nippon Steel India (AM/NS India) has supplied all the specialised steel required for INS Mangrol, the Indian Navy’s third Mahe-class Anti-Submarine Warfare Shallow Water Craft. The development highlights the role of domestic steel manufacturing in supporting India’s naval modernisation and defence production capabilities.

INS Mangrol is designed to operate in coastal and shallow waters, where naval forces face distinct surveillance and security challenges. The vessel is equipped to undertake anti-submarine warfare, underwater surveillance and low-intensity maritime operations, along with mine warfare-related tasks. Its sensors, sonar and weapon systems are intended to help detect, track and counter underwater threats.

Built by Cochin Shipyard, the vessel incorporates more than 80% indigenous content. Its construction reflects the growing participation of Indian manufacturers and suppliers in naval programmes that require specialised materials and engineering capabilities.

AM/NS India has confirmed that it will supply 100% of the specialised steel required for all eight vessels planned under the Mahe-class Anti-Submarine Warfare Shallow Water Craft programme. This places the company in a significant supply role as the Indian Navy continues to expand its capabilities for coastal operations.

The company has also supplied specialised steel for other Indian naval platforms, including INS Visakhapatnam, INS Surat and INS Malvan. These projects demonstrate the use of advanced steel grades in vessels built to meet demanding operational requirements.

According to Ranjan Dhar, Director and Vice President of Sales and Marketing at AM/NS India, naval platforms require specialised steel manufactured to stringent standards of quality and reliability. The materials used in such vessels must meet demanding requirements associated with strength, durability and performance in challenging marine environments.

Beyond defence manufacturing, AM/NS India has contributed steel to major Indian infrastructure projects, including the Chenab Railway Bridge, Anji Khad Railway Bridge and Bogibeel Bridge. These projects highlight the wider application of specialised steel in transport infrastructure and nationally significant engineering works.

The supply for INS Mangrol comes as India continues to strengthen domestic defence manufacturing and reduce reliance on overseas supply chains. For the steel industry, participation in naval programmes also reflects the importance of developing materials that meet specialised engineering requirements.

With the full steel supply commitment for the eight-vessel programme, AM/NS India is set to remain a key material supplier to this segment of India’s naval construction effort.