PARLIAMENT QUESTION: IMPACT AND ACHIEVEMENTS OF THE DEEP OCEAN MISSION

1. At a Glance

• Deep Ocean Mission (DOM) is India's flagship blue-economy scheme to explore deep-sea living/non-living resources, developed and steered by the Ministry of Earth Sciences (MoES). [1]
• Spans six verticals covering mining tech, climate advisory, biodiversity, survey/exploration, ocean energy/freshwater, and a marine biology station. [1]
• UPSC relevance: intersects Blue Economy, Polymetallic Nodules/ISA law of the sea, Ocean climate services, and indigenous deep-sea tech (MATSYA-6000) — a recurring Prelims/Mains theme.
• Answered via a Rajya Sabha/Lok Sabha Parliament Question on 05 Aug 2026, listing cumulative achievements since 2021 launch. [1]

2. Why in the News

• MoES tabled a Parliament Question reply on 05 Aug 2026 detailing DOM's impact/achievements — the immediate trigger for this note. [1]
• Recent milestone: MATSYA-6000 completed crewed/uncrewed wet harbour trials (22 Jan–14 Feb 2025) and Indian scientists trained aboard the French submersible NAUTILE (Aug 2025). [1]
• Samudrayaan, India's first manned 6,000 m dive, is expected to launch by end of 2026. [5]

3. Background & Evolution

• 2021: DOM approved by Union Cabinet with an overall cost of Rs 4,077 crore over 2021–2026 (two phases); Phase-I (2021–2024) costed at Rs 2,823.4 crore. [2]
• 07.09.2021: DOM formally launched as a Central Sector Scheme under MoES. [3]
• December 2022: Deep-sea mineral exploration conducted using Ocean Mineral Explorer (OMe 6000) AUV aboard research ship Sagar Nidhi, at 5,271 m depth in India's allocated Polymetallic Manganese Nodule (PMN) site in the Central Indian Ocean Basin (CIOB), granted by the International Seabed Authority (ISA). [2]
• 2024: Demonstrated collection of over 100 kg of cobalt-rich polymetallic nodules at 1,173 m depth in the Andaman Sea. [1]
• Jan–Feb 2025: MATSYA-6000 wet harbour trials (crewed and uncrewed) at 8 m depth. [1]
• Aug 2025: Indian pilots gained hands-on experience on the French NAUTILE submersible. [1]
• Predecessor context: builds on India's decades-long Polymetallic Nodules (PMN) programme and ISA seabed exploration contracts (India was among the first "pioneer investors" registered with ISA in 1987).

4. Core Static Facts

5. Multi-Dimensional Analysis

Economic (Blue Economy)

• Targets non-living resources (polymetallic nodules, sulphides) as future critical-mineral (cobalt, nickel, manganese) supply chain, reducing import dependence. [1]
• OTEC-based desalination pilots aim at freshwater and clean offshore energy for island/coastal needs. [5]

Scientific / Technological

• Indigenous HOV MATSYA-6000 places India among a select group of nations (US, Russia, Japan, France, China) with deep-manned-submersible capability. [4]
• OMe 6000 AUV successfully tested at record 5,271 m depth. [2]
• 145 collaborative research projects running with ~70 national institutions. [1]

Environmental / Biodiversity

• Isolated ~2,038 deep-sea microbes; documented 201 deep-sea species across 31 surveyed seamounts, including 43 potentially new to science. [1]
• Discovered 4 active and 2 inactive hydrothermal vent fields on Indian Ridges — significant for chemosynthetic ecosystem study. [1]

Geopolitical / Strategic

• Nodule exploration rights operate under ISA (UNCLOS-mandated body) allocation in CIOB — ties India's deep-sea claims to international seabed law. [2]
• International capacity-building tie-up with France (NAUTILE submersible training) reflects strategic ocean-science diplomacy. [1]

Administrative / Governance

• Implemented through NIOT (executing agency) under MoES, with ISRO's VSSC for submersible engineering — a rare inter-ministerial (Earth Sciences + Space) technology convergence. [4]

6. Recent Developments (last 12–18 months)

• 22 Jan–14 Feb 2025: MATSYA-6000 crewed and uncrewed wet harbour trials at 8 m depth completed. [1]
• August 2025: Indian scientists gained pilot experience aboard France's NAUTILE deep submersible. [1]
• 17 Aug 2025: MoES released a DOM factsheet titled "Deep Ocean Mission: India's Gateway to the Ocean Floor." [5]
• Samudrayaan's manned 6,000 m dive reaffirmed for launch by end of 2026. [5]
• 05 Aug 2026: Parliament apprised of cumulative DOM achievements via a Parliament Question. [1]

7. Prelims Hooks

• DOM launched on 07 September 2021 as a Central Sector Scheme. [3]
• Nodal Ministry: Ministry of Earth Sciences, NOT MoEFCC or DST. [1]
• Total approved cost: Rs 4,077 crore for 2021–2026 (two phases). [2]
• DOM has six verticals. [1]
• Human-submersible project name: Samudrayaan; the submersible itself is MATSYA-6000. [4]
• MATSYA-6000 developed jointly by NIOT (MoES) and VSSC (ISRO). [4]
• MATSYA-6000 depth capacity: 6,000 m; carries 3 persons; endurance 12 hrs normal / 96 hrs emergency. [4]
• Deep-sea AUV used for mineral exploration: OMe 6000 (Ocean Mineral Explorer). [2]
• OMe 6000 tested at 5,271 m depth in Dec 2022 aboard Sagar Nidhi. [2]
• India's PMN exploration area lies in the Central Indian Ocean Basin (CIOB), allotted by the International Seabed Authority. [2]
• Over 100 kg of cobalt-rich polymetallic nodules collected from 1,173 m depth in the Andaman Sea (2024). [1]
• DOM surveyed 31 seamounts, documented 201 deep-sea species (43 potentially new). [1]
• ~2,038 deep-sea microbes isolated under the Mission. [1]
• Discovered 4 active + 2 inactive hydrothermal vent fields on Indian Ridges. [1]
• Advanced Marine Station for Ocean Biology land procured at Nemmeli, Chennai. [1]
• Wet harbour trials of MATSYA-6000: 22 Jan–14 Feb 2025. [1]

8. Mains Relevance

• GS-III: Science & Technology (indigenous technology development); Infrastructure/Economy (Blue Economy, resources); Environment & Biodiversity Conservation.
• GS-II: International agreements/bodies (UNCLOS, International Seabed Authority) affecting India's interests.
• Plausible question stems: 1. "Discuss the strategic and economic significance of the Deep Ocean Mission for India's Blue Economy. Examine the technological milestones achieved so far." (GS-III) 2. "India's deep-sea mineral exploration rights are governed by the International Seabed Authority under UNCLOS. Discuss the implications for India's resource security and international obligations." (GS-II/III) 3. "Critically evaluate India's progress towards indigenous deep-ocean manned exploration capability under the Samudrayaan project." (GS-III)

9. Related Topics to Study Next

• Blue Economy Policy of India — DOM is one pillar of India's broader Blue Economy vision.
• UNCLOS & International Seabed Authority (ISA) — legal framework governing India's CIOB nodule claims.
• Polymetallic Nodules/Sulphides & Critical Minerals strategy — resource-security angle.
• PMN and Cobalt-rich Crust exploration contracts — India's historical "pioneer investor" status with ISA.
• National Institute of Ocean Technology (NIOT) — the executing agency for DOM.
• Ocean Thermal Energy Conversion (OTEC) — clean energy vertical within DOM.
• India's Space capability convergence (ISRO/VSSC) — cross-domain tech application in ocean exploration.
• Coastal Regulation Zone (CRZ) & Marine Protected Areas — links to deep-sea biodiversity conservation angle.

10. Common Errors / Trap Areas

• Confusing nodal ministry: DOM is under Ministry of Earth Sciences, not MoEFCC (a common trap given the "biodiversity/conservation" verticals).
• Mixing up Samudrayaan (the mission/project name) with MATSYA-6000 (the actual submersible vehicle) — aspirants often use them interchangeably in MCQs.
• Confusing the AUV OMe 6000 (unmanned mineral explorer used in 2022) with the manned HOV MATSYA-6000 (still undergoing trials as of 2025–26).
• Misremembering the launch year — DOM was approved by Cabinet in 2021 and launched 07 Sept 2021, not to be confused with the earlier standalone PMN programme dating to the 1980s.
• Assuming DOM funding figures are annual — the Rs 4,077 crore is a total multi-year (2021–2026) outlay, split into phases, not a yearly budget.