Why this matters now
India has 7,517 km of coastline, 13 coastal states/UTs, and a 2.4 million sq km Exclusive Economic Zone — and sits astride the Indian Ocean's most important Sea Lines of Communication. ~80% of the world's oil tankers and ~60% of global merchant traffic pass through Indian Ocean waters. Three reasons coastal & maritime security closes the Internal Security cluster. First, 26/11 is the most studied counter-terror failure in independent India's history; the post-26/11 architecture is now textbook reference. Second, the three-tier framework + IMAC + IFC-IOR is the only Indian internal-security architecture with significant international integration. Third, growing Chinese naval presence in the Indian Ocean (Djibouti base, Hambantota, Gwadar) makes maritime security increasingly strategic.
26/11 — the watershed
The 26/11 Mumbai attacks (26-29 November 2008) exposed massive gaps:
- No coordinated coastal surveillance — Navy + Coast Guard + state Marine Police in silos;
- No real-time Maritime Domain Awareness — couldn't track all vessels in EEZ;
- No integration of fishermen — 2.5 lakh fishing boats unidentified;
- No Automatic Identification System (AIS) mandate;
- Weak intelligence coordination on maritime threats;
- State Marine Police under-resourced;
- Port security weak;
- No roles & responsibilities doctrine across agencies.
The post-26/11 overhaul was the most comprehensive Indian internal-security architecture revision since independence.
Three-tier coastal security framework
| Tier | Force | Zone | Functions |
|---|---|---|---|
| 1 | Indian Navy | Beyond 12 nm to 200 nm EEZ | EEZ patrolling, sub-surface and air coverage, SLOC protection, blue-water capability |
| 2 | Indian Coast Guard | 0-12 nm Territorial Waters + 12-24 nm Contiguous Zone | Maritime law enforcement, SAR, anti-smuggling, pollution response, fisheries protection |
| 3 | State Marine Police | 0-12 nm Coastal Waters (close to shore) | Coastal policing, beach patrolling, fishing harbour inspection, local intelligence |
The Navy was designated overall in-charge for coastal security in December 2009. The Commander-in-Chief of the relevant naval command coordinates across tiers.
Marine Police status (2024): ~12 coastal states + 4 UTs have Marine Police; ~200+ coastal police stations; ~1,500+ vehicles and ~1,000+ boats; ~50,000+ personnel. Funded under the Centre's Coastal Security Scheme.
Coastal Surveillance Network (CSN)
Chain of high-frequency surface-wave radar stations along the Indian coast:
- Phase I (~46 stations + 10 mobile) — completed by 2018; mainland + Andaman/Nicobar/Lakshadweep;
- Phase II (~38 additional stations) — ongoing;
- Phase III (~32 more stations) — fills Sundarbans, Gujarat Rann gaps.
Each station has surface radar, AIS receiver, electro-optic sensors, and communication links. Run by the Indian Coast Guard.
IMAC & NC3I — the fusion architecture
Information Management and Analysis Centre (IMAC), Gurugram — operationalised 2014. Multi-agency fusion centre integrating data from CSN + Coast Guard + Navy + Customs + Ports + State Marine Police + Fisheries Department. Provides real-time Maritime Domain Awareness 24×7.
National Command Control Communication and Intelligence Network (NC3I) — the data backbone connecting IMAC to 80+ Navy command centres, 40+ Coast Guard stations, Marine Police, lighthouses, ports, and AIS coverage. Together CSN + IMAC + NC3I create India's Maritime Domain Awareness architecture — conceptually comparable to NORAD or US Coast Guard's Common Operating Picture.
IFC-IOR — international maritime fusion
Information Fusion Centre for Indian Ocean Region (IFC-IOR) — established 22 December 2018 at Gurugram (co-located with IMAC). The regional maritime information hub. 24×7. Integrates international partners — US, France, UK, Japan, Australia, Sri Lanka, Maldives, Mauritius, Seychelles, and others — for:
- Piracy tracking;
- Illegal fishing;
- Drug smuggling;
- Migration;
- Maritime disaster response.
IFC-IOR has become a regional hub for maritime collaboration. India's "SAGAR" doctrine (Security and Growth for All in the Region) is operationalised here.
Sagar Prahari Bal
The Indian Navy's specialised coastal patrol force; established 2008 post-26/11. ~1,000 personnel. Equipped with Fast Interceptor Crafts (FICs), guns, surveillance equipment. Deployed at 11 designated coastal stations; focuses on naval infrastructure (Karwar, Visakhapatnam) and oil platforms (Mumbai High, KG basin).
Fishermen integration — eyes and ears
The "fisherman as eyes and ears" doctrine recognises that ~2.5 lakh registered fishing boats and ~14+ lakh fisherfolk are India's first maritime surveillance layer. Steps taken:
- Biometric ID cards mandatory for all fishermen;
- AIS transponders for boats >20m;
- Doppler beacon transponders for smaller boats (under development);
- Fisherman helpline — 1093 (national);
- RAW Sagar Prahari rapid alert system;
- ICG Community Interaction Programmes regularly;
- Fishing harbour security under Marine Police.
National Maritime Security Coordinator
Position created 2022 under National Security Adviser. First incumbent: Vice Admiral G. Ashok Kumar (Retd). Coordinates Centre-State-MoD-MoHA-Fisheries Department. Apex coordination for India's growing maritime footprint.
Other recent steps
- Sea Vigil — largest biennial coastal security exercise; ~500+ vessels participate; held 2019, 2021, 2023; 2025 scheduled;
- National Maritime Security Policy (NMSP) — under preparation since 2022;
- Sagarmala Programme — port-led development (₹6.5 lakh crore over 10 years);
- Sagarmanthan dialogue 2024 — India's first major maritime conference in Mumbai;
- India-France white shipping, India-US LEMOA, India-UAE/Oman/Mauritius arrangements.
Current challenges
- Maritime terrorism — 26/11 model remains a risk;
- Piracy — Somalia waters reduced ~98% since 2011; Gulf of Guinea + South China Sea continue;
- Drug trafficking — Makran coast route; record seizures (~₹50,000 crore in 2023-24);
- IUU fishing — Chinese trawlers; Palk Bay TN-Sri Lanka conflicts;
- Human trafficking — Sundarbans, Andaman, TN coast;
- Bangladesh migration — Sundarbans porous; Rohingya inflows;
- Chinese naval presence — Djibouti 2017, Hambantota, Gwadar; String of Pearls;
- Undersea cables — 17+ international cables landing on Indian coast;
- Underwater threats — Pakistani submarines, mines;
- Climate-induced — cyclones, sea-level rise affecting ports;
- Cyber attacks on maritime sector — ports, vessels, navigation systems;
- Maritime Theatre Command — proposal under Chief of Defence Staff still pending.
"India's coastal security architecture is the most successful post-disaster security overhaul in independent India. The 26/11 to IMAC arc is now textbook — but the next test will be how the architecture scales as the Indian Ocean becomes the centre of great-power competition." — paraphrasing the Standing Committee on External Affairs maritime security reports
UPSC PYQs and likely future questions
UPSC angle
Coastal & Maritime Security is now a recurring GS-3 theme. Strong answers cite 26/11 as the watershed, the three-tier framework, CSN/IMAC/NC3I architecture, IFC-IOR international cooperation, and Chinese naval expansion as the strategic context.
- 2019 GS-3: "Cross-border movement of insurgents is only one of the several security challenges facing the policing of the border. What other security challenges do you visualise?"
- 2022 GS-3: "What are the maritime security challenges India faces? Discuss the multilateral approach India can adopt to overcome them."
- 2024 GS-3: "Examine India's coastal security architecture as it has evolved after 26/11. What are the current gaps?"
- 2017 GS-3: "Border management is a complex task due to difficult terrain and hostile relations with some countries. Elucidate the challenges and strategies for effective border management."
- Likely 2026: "Discuss IFC-IOR as a model for regional maritime cooperation. To what extent has SAGAR doctrine been operationalised?"
- Likely 2026: "Examine the proposed Maritime Theatre Command and its implications for India's maritime security architecture."
Internal Security cluster — COMPLETE at 4/4
All ten thematic clusters now complete: Federalism, Rights, Economy, IR, Society, Climate, S&T, Health, Governance, Internal Security. 40 deep-dives total across all clusters.