Every vessel that moves cargo through the world's shipping lanes carries a permanent identity: its IMO number. Unlike a vessel's name, its flag, or even its MMSI, the IMO number survives every sale, every flag change, and every rebranding. It is the anchor point for any serious maritime ownership investigation — and it is freely searchable on Equasis, the IMO-endorsed registry that maritime investigators rely on more than any other single source.
MAR-002 covers the full methodology for tracing a vessel from its IMO number to its beneficial owner: how to read an Equasis record, how to identify the difference between a registered owner and an operational ship manager, how to verify that a vessel's MMSI prefix matches its declared flag state via ITU MARS, and how to cross-reference what you find against international sanctions lists. It also covers the structural patterns that experienced investigators recognise immediately — the single-vessel shell company, the flag of convenience, the management company registered in a jurisdiction with minimal disclosure requirements.
This is the second card in the Signal & Shadow Maritime Intelligence series. It builds directly on MAR-001 (AIS and MMSI vessel tracking) and sets up MAR-003, which covers dark vessel behaviour and AIS spoofing detection.
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