Sagar-Sakshi: Ocean Whodunit — Catching a Ship That Turned Off Its Tracker | SIH 2026

A ship spills oil, then switches off its tracker. Ocean Whodunit walks through how Sagar-Sakshi turns satellite imagery and AIS data into a ranked, evidence-backed case — without ever naming a "guilty" vessel outright. Team Tantragyan — Smart India Hackathon 2026 (SIH26143, Space Technology / Software) Code: https://github.com/Tantragyaan2k26/sa... #SmartIndiaHackathon #SIH2026 #OilSpillDetection #SAR #AIS #MaritimeSecurity #RemoteSensing 00:00 Intro — Ocean Whodunit 00:28 The Hook: Tracker Off 01:05 The Problem: Manual vs. Automated 01:45 What Is a Dark Vessel? 02:18 The 4-Stage Pipeline 02:50 Chapter 1 — Meet Sagar-Sakshi: Twin-Branch AI Engine 03:38 CFAR + CNN Ship Detection 04:14 Chapter 2 — The Alibi: Tracing Drift & Ships 05:44 Chapter 3 — Presenting Evidence: Analyst-in-the-Loop 07:06 Chapter 4 — Three-Phase Roadmap 08:02 Closing: Undeniable Proof?