The Underwater Battleground: Unmanned Underwater Vessels for the Indian Navy

Why It Matters

The rollout gives the Indian Navy a stealthy, cost‑effective toolset for mine counter‑measures, anti‑submarine warfare and power projection, narrowing the capability gap with peer navies.

Key Takeaways

• Neerakshi AUV: 2.15 m, 4‑hour endurance, 300 m depth.
• HEAUV: 10 m, 15‑day endurance, 3‑8 knots speed.
• XLUUV: 40 m, 100‑tonne, $230 M budget, 12 units planned.
• Project SWARM uses man‑portable UUVs for rapid mine detection.
• UUVs enhance Navy stealth, endurance, and crew safety.

Pulse Analysis

The race to field unmanned underwater vessels (UUVs) has become a hallmark of modern naval modernization, with the United States, China and European powers already fielding operational fleets. India’s recent announcements signal a decisive shift from experimental prototypes to a diversified portfolio that spans micro‑UUVs for mine hunting to a 100‑tonne extra‑large platform capable of striking enemy ships. By investing $230 million in the XLUUV program and leveraging domestic shipyards, India aims to secure an indigenous supply chain while keeping pace with global trends.

Technical hurdles—acoustic communication limits, inertial navigation drift, and high‑reliability requirements—have traditionally slowed UUV adoption. Indian developers are tackling these issues through modular payload bays, hydrogen‑fuel‑cell research for extended endurance, and robust sonar suites on the HEAUV. The smaller Neerakshi and Project SWARM units illustrate a cost‑effective approach, enabling rapid deployment of dozens of low‑cost platforms for mine counter‑measure and seabed mapping, while the larger XLUUV offers strategic strike and long‑duration surveillance capabilities.

Strategically, the expanding UUV fleet enhances the Indian Navy’s ability to operate in contested littorals and the broader Indian Ocean Region without exposing high‑value assets or personnel. Persistent under‑sea awareness, combined with the stealth of autonomous platforms, will improve anti‑submarine warfare and protect critical sea lanes. As regional rivals invest heavily in similar technologies, India’s integrated UUV roadmap positions it to maintain maritime dominance and project power well into the next decade.