An armada of vessels operating near Asia’s maritime thoroughfares moves hundreds of millions of barrels of sanctioned oil. Called the “dark fleet,” the ships also risk environmental catastrophe.

Just outside the reach of Malaysia’s coast guard and without formal oversight, oil is being transferred from one vessel to another in open waters, risking spills and lives while increasing geopolitical tensions.

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00:00:00 An Armada of Tankers
00:01:24 The Pablo Disaster
00:03:10 The Flotilla
00:03:50 Sanctioned Oil
00:05:23 The Trip
00:07:05 Building the Algorithm
00:08:08 Discovering a Ship-To-Ship Transfer
00:10:40 The Environmental Dangers
00:11:02 Enforcing Sanctions