How Draft Depth Exposes Fake Ships

Описание: How Draft Depth Exposes Fake Ships & AIS Telemetry Fraud 🚢⚓

Automatic Identification System (AIS) signals can be manipulated, turned off, or spoofed by illicit shipping operators trying to cover up sanctions evasion, illegal ship-to-ship (STS) transfers, or ghost cargo movements. However, while digital GPS coordinates can easily be faked on tracking screens, a vessel's physical draft depth—how deep the hull sits in the water—cannot be lied about.
Draft depth acts as a physical, unalterable indicator of actual onboard cargo weight. Maritime risk analysts, trade compliance leads, and supply chain managers use three fast hydrodynamic verification checks to expose fake ships and spoofed telemetry:
Waterline Displacement vs. Reported AIS Draft: Cross-reference reported AIS draft metrics against high-resolution optical satellite imagery. If AIS data claims a cargo vessel is fully laden with 100,000 DWT of crude or dry bulk, but satellite imagery reveals a high waterline (shallow draft), you are looking at a phantom vessel or spoofed telemetry.
Berth Bathymetry & Port Telemetry Checks: Compare declared arrival and departure draft figures against the physical water depth (bathymetry) of the reported berth. If a carrier claims to have loaded heavy cargo at a quay physically too shallow to accommodate that draft without grounding, the port call was falsified on paper.
Ship-to-Ship (STS) Transfer Symmetry Verification: When auditing mid-ocean cargo transfers between donor and receiving vessels, measure corresponding draft changes. The donor vessel’s draft must decrease in direct hydrodynamic proportion to the receiving vessel’s draft increase. Asymmetrical draft shifts expose phantom transfers or unrecorded third-party offloads.
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