360° UPSC Mains Analysis

Rajnath in Germany: Defence cooperation pacts inked, talks held

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Flora & Fauna

Cuvier's Beaked Whale (Ziphius cavirostris)
Status: Least Concern
Threat: Highly sensitive to mid-frequency active sonar used in submarine detection, which can trigger panic, rapid surfacing, decompression sickness, and lethal strandings.
Dugong (Dugong dugon)
Status: Vulnerable
Threat: Coastal naval movements, acoustic pollution, and potential vessel strikes disrupt their feeding in shallow seagrass meadows.

Ecology Impact

The deployment of advanced submarines under Project-75(I) and associated naval exercises in the Indian Ocean Region can cause significant underwater noise pollution. High-intensity active sonar systems disrupt the echolocation, communication, and navigation of deep-diving marine mammals, occasionally leading to decompression sickness and mass strandings.

Science & Tech Angle

The underlying technology of Project-75(I) is fuel-cell-based Air Independent Propulsion (AIP). This system generates electricity by combining hydrogen (stored as metal hydrides) and oxygen in a chemical reaction, allowing conventional submarines to remain submerged for weeks without needing to snorkel for atmospheric oxygen, thereby reducing both acoustic and thermal signatures.

Climate Change Link

The transition to fuel-cell-based Air Independent Propulsion (AIP) systems in Project-75(I) submarines reduces carbon emissions compared to traditional diesel-electric engines by using hydrogen fuel cells that produce water as a by-product. Conversely, large-scale military aviation exercises like Ex-TARANG SHAKTI contribute to high-altitude greenhouse gas emissions and contrail-induced radiative forcing.

Sustainable Development

The integration of fuel-cell AIP technology aligns with SDG 13 (Climate Action) by lowering maritime emissions. Additionally, mitigating underwater acoustic pollution from naval exercises supports SDG 14 (Life Below Water) by protecting marine biodiversity and fragile pelagic ecosystems.

International Frameworks

United Nations Convention on the Law of the Sea (UNCLOS), 1982
Article 194 obligates states to prevent, reduce, and control pollution of the marine environment, which encompasses anthropogenic acoustic pollution from military vessels.
Convention on the Conservation of Migratory Species of Wild Animals (CMS)
Addresses the transboundary threat of marine noise pollution on migratory cetaceans and encourages member states to adopt noise-mitigation guidelines during naval operations.

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