India is preparing for the second wet test of its deep-sea submersible Matsya-6000 before the end of 2025. The test will take place in Chennai under the Samudrayaan mission. This follows the successful first wet test in February 2025. The submersible aims to reach depths of 6,000 meters to explore rare minerals.

BulletsIn

• Second wet test likely before 2025 ends, location: Chennai
• Matsya-6000 is part of India’s Samudrayaan deep-sea exploration mission
• First wet test done in Feb 2025 at Kattupalli Port near Chennai
• First test included 10 dives—5 manned, 5 unmanned
• Systems tested: control, flotation, oxygen tanks, CO₂ scrubbers, safety
• Ex-Navy officer JP Singh to pilot the submersible
• Titanium exo-frame now integrated; all parts assembled
• New systems from first test to be validated in second test
• Sub can dive up to 6,000 meters; holds 3 crew in 2.1m hull
• Engineers plan 500-meter test dive before 2026