Container prefix operated by Yang Ming Marine Transport
Keelung, Taiwan · Founded 1972 · 100+ vessels · 900K TEU
3 free shipments · No card required
What This Prefix Tells You
The first four characters of any container number identify its owner. YMMU containers belong to Yang Ming Marine Transport (Yang Ming) — one of Taiwan's leading container carriers, with a strong presence on Transpacific and Asia–Europe corridors. These containers operate primarily on Transpacific, Asia–Europe, Intra-Asia. When you're tracking a YMMU container, you're tracking cargo that moves through Yang Ming's fleet of 100+ vessels.
Owner
Yang Ming Marine Transport
Headquarters
Keelung, Taiwan
Fleet Size
100+ vessels
Capacity
900K TEU
Founded
1972
Main Routes
Transpacific, Asia–Europe, Intra-Asia
Alliance
Premier Alliance
Website
yangming.com
The Tracking Problem
Yang Ming updates their tracking system when milestones are logged — often hours or days after they occur. If your YMMU container is slow-steaming, anchored outside port, or stuck in a customs queue, the portal won't tell you until it's logged.
Yang Ming Portal
CargoPilot
Example YMMU Container Numbers
YMMU container numbers follow the ISO 6346 standard: four owner-code letters followed by six digits and a check digit.
Common Questions
The YMMU container prefix is the ISO 6346 owner code for Yang Ming Marine Transport (Yang Ming), headquartered in Keelung, Taiwan. Yang Ming Marine Transport is one of Taiwan's leading container carriers, with a strong presence on Transpacific and Asia–Europe corridors. Founded in 1972, operating a fleet of 100+ vessels.
YMMU container numbers follow the ISO 6346 standard: four letters (YMMU) followed by six digits and a check digit — for example YMMU1234567 or YMMU9876543. The fourth letter is always U (freight containers), J (detachable equipment), or Z (trailers).
YMMU containers are operated by Yang Ming Marine Transport (Yang Ming) primarily on Transpacific, Asia–Europe, Intra-Asia. The carrier is part of the Premier Alliance.
Stop checking Yang Ming's portal for status codes. CargoPilot watches the actual vessel and tells you what's changed — and what it means.
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