How Iran's Shadow Fleet Is Keeping Oil Flowing Through the Hormuz Blockade — AIS Spoofing, Ship-to-Ship Transfers, and $910M in 2 Days The technical mechanics of how dark fleet tankers evade detection — disabling AIS beacons, hugging Iranian coastline, conducting ship-to-ship transfers in the Gulf of Oman, then sailing to China with clean documentation. The energy market implications of a sanctions architecture this porous are significant.