Current Context: Recently, two Indian aquanauts descended to 4,025 metres and 5,002 metres depth in the Atlantic Ocean, as part of an Indo-French collaboration using the French submersible Nautile. This milestone places India among the very few nations capable of exploring extreme ocean depths.

 SIGNIFICANCE

• First Time: India crossed the 4,000 metres depth mark
• Capability Boost: Strengthened India’s deep-sea research and technological expertise
• Global Standing: Enhanced India’s role in international marine exploration
• Knowledge Gain: Insights into deep-sea ecosystems and mineral resources

 INDO-FRENCH COLLABORATION

• Partner: IFREMER (French Marine Research Institute)
• Vessel Used: Nautile submersible from research ship L’Atalante
• Knowledge Transfer: Training Indian scientists in piloting, sampling, and submersible operations

 ABOUT MATSYA-6000 (INDIA’S INDIGENOUS SUBMERSIBLE)

• Design Depth: 6,000 metres
• Endurance: 12 hours
• Features: Titanium hull, lithium-polymer batteries, acoustic communication, emergency escape system

Trials: Wet trials in 2025, shallow water tests in 2026, deep-sea missions planned in 2027–28