TRACKINGMCP · All container prefixes ↗
A container number beginning with SBMU is owned by Seaboard Marine, which operates under SCAC SBMU. Track a SBMU container by its number. (Americas)
| Prefix | SBMU |
|---|---|
| Owner | Seaboard Marine |
| Operating carrier | Seaboard Marine |
| SCAC | SBMU |
| Type | Carrier-owned |
Every shipping container carries an ISO 6346 number: four letters then seven digits (six serial + one check digit). The first three letters are the owner code and the fourth is always U for a freight container — so the four-letter prefix identifies who owns the box. Owner ≠ always the line carrying it: leasing companies own millions of boxes that sail under many carriers, which is why a leasing prefix is tracked by bill of lading, not by the prefix.
SBMU containers are owned by Seaboard Marine (SCAC SBMU).
Track a SBMU container by its number on Seaboard Marine.
Owner data from TrackingMCP's verified BIC prefix registry. Updated 2026-07-14.