MMSI
Category: Logistics
Definition (plain English)
Maritime Mobile Service Identity is a radio identifier used for vessel communications and AIS tracking.
Why it matters commercially
MMSI helps operations confirm vessel tracking data, especially when vessel names are duplicated or changed.
Example
A logistics team matched MMSI and IMO number before relying on AIS data for customer ETA updates.
Common mistake
Using vessel name alone for tracking without verifying IMO or MMSI identity.
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