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Internal SecurityPremium

Coastal Surveillance: Sagar Prahari and Coastal Radar Network

July 19, 2026
6 min read

Coastal Surveillance: Sagar Prahari and Coastal Radar Network

Introduction

India's 7,516 km coastline, 1,197 islands, and 13 major/200+ minor ports present significant surveillance challenges. The 26/11 Mumbai attacks (2008) exposed critical gaps in coastal security. In response, India built a multi-layered coastal surveillance architecture integrating radars, aerial platforms, patrol vessels, and inter-agency coordination. The Coastal Radar Network (CRN) and Sagar Prahari Bal (SPB) are the backbone of this system.

Post-26/11 Coastal Security Reforms

Institutional Changes

ReformResponsibilityTimeline
Coastal Security designated as Navy's roleCabinet Committee on Security2009
Indian Coast Guard designated as lead coordinating agencyMinistry of Defence2009
Sagar Prahari Bal raisedIndian Navy2009
National Committee on Coastal Security formedCoastal security reviewed at Cabinet Secretary level2009
Joint Operation Centres establishedNavy (Mumbai, Kochi, Visakhapatnam, Port Blair)2010
Coastal Police formalised in coastal states

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State governments + MHA
2010-12

Integrated Coastal Security Architecture

The current architecture is a four-tier system:

Tier 1: Navy (Offshore) - Deep water >200 NM
Tier...