India Unveils First Indigenous Warship: A Game-Changer for Submarine Warfare in Shallow Waters

On June 18, 2025, a significant milestone for India’s naval capabilities was achieved with the commissioning of the INS Arnala. This is the country’s first indigenously designed and built Anti-Submarine Warfare Shallow Water Craft (ASW-SWC). It marks a step forward in India’s commitment to self-reliance in defense, aligning with the Aatmanirbhar Bharat initiative.

The INS Arnala is designed specifically for operations in shallow waters, measuring 77.6 meters and displacing over 1,490 tonnes. Its main job is to detect and neutralize enemy submarines close to India’s coastline, which is critical for maritime security.

This vessel features a diesel engine combined with waterjet propulsion, allowing it to reach speeds of up to 25 knots and cover 1,800 nautical miles without refueling. This capability is essential for extensive coastal patrols.

One of INS Arnala’s standout features is its advanced technology. It’s equipped with several sophisticated underwater sensors:

Hull-Mounted Sonar (Abhay)
Low-Frequency Variable Depth Sonar (LFVDS)
Underwater Acoustic Communication System (UWACS)

These tools help the ship identify hidden threats below the waves and enable quick communication for coordinated responses.

Besides anti-submarine operations, the INS Arnala can perform various tasks, including:

Search and rescue missions
Mine-laying operations
Surveillance
Other low-intensity maritime tasks

This adaptability makes it a significant asset in protecting India’s interests in the region.

Named after Arnala Fort, off the Maharashtra coast, the ship showcases India’s maritime heritage. Over 80% of its materials come from Indian businesses, including Bharat Electronics Ltd. and Mahindra Defence, highlighting the growth in India’s defense manufacturing sector.

The INS Arnala is the first of a planned fleet of 16 vessels under the ₹12,622 crore ASW-SWC project. These new ships will gradually replace the older Abhay-class corvettes, strengthening India’s coastal defense capabilities.

As global naval strategies evolve, India’s focus on indigenous military design aligns with trends seen worldwide. Nations are increasingly investing in homegrown technology to ensure readiness and sovereignty in defense. By commissioning the INS Arnala, India is not only enhancing its maritime strength but also boosting its defense industry.

In conclusion, the INS Arnala represents a significant leap in India’s naval capabilities. This vessel is not just a ship; it’s a symbol of strength, independence, and the future of India’s defense strategy.

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