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How to Read a CWYU Container Number (ISO 6346)
CWY
U
123456
7
Carrier Owner Code (Crowley Maritime)
Equipment Category (U)
6-Digit Serial Number
Check Digit Verification
For accurate CWYU container tracking, every container follows the international ISO 6346 standard. The first three letters represent the BIC registered owner code for Crowley Maritime. The 4th character is always U denoting an intermodal freight container, followed by a unique 6-digit serial number and a calculated check digit for tracking verification.
Crowley Maritime Corporation & Prefix Directory
Crowley Maritime
Crowley Maritime CorporationCrowley Maritime is a US-based ocean shipping, logistics, and petroleum distribution company serving Puerto Rico, the Caribbean, and Central America. Use our CWYU container tracking tool for real-time visibility across global maritime routes.
Track via Crowley Maritime Carrier Page
Headquarters
Jacksonville, USA
Founded
1892
Global Fleet
300+ vessels & barges
Carrier Alliance
Independent
All Registered Crowley Maritime Container Prefixes (5)
Select any Crowley Maritime container prefix to view dedicated prefix tracking, serial number anatomy, and container information.
Frequently Asked Questions About CWYU Container Tracking
What does the CWYU container prefix stand for?
CWYU is an official BIC-registered container prefix operated by Crowley Maritime Corporation. The letters "CWY" identify the carrier, and "U" designates a standard ISO 6346 intermodal freight container.
How do I perform CWYU container tracking live?
Enter your full 11-character CWYU container number (e.g. CWYU1234567) into the tracking field above. TraceContainer will fetch real-time vessel schedules, port milestones, and container status.
Can I track all Crowley Maritime container prefixes on TraceContainer?
Yes, TraceContainer supports live tracking across all registered Crowley Maritime prefixes including CREU, CRMU, CRWU, CWYU, CRVU and more.