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India's Steps Toward Human Deep-Sea Dives: Nautile to Matsya-6000 Wet Trials
The Daily Guardian
|August 23, 2025
India's 5,000-metre Nautile rehearsal pressuretests life support, comms, and retrieval-putting a safe, crewed 6,000-metre Matsya within reach, and responsibly unlocking ISAlicensed critical minerals.
India's deep-ocean program has accelerated in the 2020s under the Deep Ocean Mission (DOM), aiming to deploy an indigenous crewed submersible Matsya-6000 capable of 6,000 m depths. Key milestones include the recent event of India's first manned 5,000 m dives (using the French Nautile sub) in August 2025, and extensive wet trials of Matsya-6000 itself in 2024-2025. These developments parallel global history (e.g., bathyscaphe Trieste, Jiaolong, Alvin, Mir) and set the stage for India joining the handful of nations with deep-crewed submersibles.
Nautile Expedition to Matsya-6000
• 2021: Union Cabinet approves the Deep Ocean Mission (aka Samudrayaan), encompassing manned and unmanned submersibles, underwater vehicles and deep-sea mining R&D. This marked formal commitment to develop an Indian deep-diving capability.
• 2022-2024: NIOT (National Institute of Ocean Technology) completes design of Matsya-6000 (3-person titanium sphere) and builds subsystems under MoES (Ministry of Earth Sciences). Early dry dock tests validate life-support, ballast, thrusters and communications hardware. In late 2024, Matsya-6000 completed integrated dry tests simulating 500 m depths, then moved to L&T Shipbuilding (Kattupalli) for wet trials. In Jan-Feb 2025, eight shallow-water dives (five unmanned, five manned) were performed to qualify life-support, control systems and sensor payloads.
• Feb 2025: PIB press release confirms Matsya-6000 wet-test success. Crucially, the tests included manned dives to verify life-support reliability under pressure and communications/telemetry, though limited by shallow depth. This paves the way for a planned 500 m manned dive by end-2025. The 2.1 m sphere (to be upgraded to 80 mm titanium) is being engineered for 96 h emergency endurance and multi-node acoustic comms.
Bu hikaye The Daily Guardian dergisinin August 23, 2025 baskısından alınmıştır.
Binlerce özenle seçilmiş premium hikayeye ve 9.000'den fazla dergi ve gazeteye erişmek için Magzter GOLD'a abone olun.
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