See any ONE shipment through four independent lenses: carrier events, live vessel position, schedule and a forecast ETA. Not one source that can be wrong.
Track a ONE shipment by pasting your container number, bill of lading, or booking reference at trackingmcp.com/track/one. TrackingMCP returns ONE's live milestones, the vessel's satellite AIS position, a cross-checked ETA, and the demurrage & detention free-time clock; one DCSA-normalised screen, no ONE login needed.
ONE containers begin with KKFUKKLUKKTUKPLUMOLUNYKU. Bill of lading and booking numbers work too.
Ocean Network Express, the 2018 liner joint venture of Japan’s NYK, MOL, and K Line, run out of Singapore.
Serves
GlobalTranspacificAsia–EuropeLatin America
Worth knowing You can’t miss its ships — the whole fleet wears the same magenta “ONE pink” hull.
Actuals Carrier events: Milestones from the carrier.
Position Satellite · AIS: Where the ship is, live.
Plan Carrier schedule: The line’s committed plan.
Probability ETA forecast: A cross-checked forecast.
ONE schedule reliability: measured, not marketed
441 arrivals · 25 lanes · 12 mo
On-time · ±24h
57.8%
vs fleet median 43.7%
Delay when late
34.1h
median · fleet 59.1h
Sample
441
tracked arrivals · 25 lanes
ONEfleet median (21 carriers)
Measured across 441 tracked arrivals on 25 trade lanes over the past 12 months, ONE vessels arrived within 24 hours of schedule 57.8% of the time, with a typical delay of 1.4 days (34.1 hours) when late. These are TrackingMCP's own measurements from actual arrivals against the published schedule, refreshed as new arrivals land. See how every carrier compares on the Carrier Reliability Index →
How to track a ONE shipment
4 steps
Find your ONE reference. Locate your ONE container number, bill of lading, or booking number; it is on your booking confirmation, arrival notice, or commercial invoice.
Enter it at trackingmcp.com/track/one. Paste the reference into the search box. TrackingMCP auto-detects whether it is a container, bill of lading, or booking number and resolves it to ONE.
Read the live, cross-checked status. See ONE's own milestones, the vessel's live AIS position, the published schedule, and a forecast ETA side by side, so one stale source cannot mislead you.
Watch the demurrage & detention clock. Track the free-time countdown and get an alert before ONE demurrage or detention charges begin to accrue.
What you'll see when tracking ONE
DCSA model
Every ONE shipment is normalised to the DCSA Track & Trace model, so the milestones read the same as any other carrier:
Gate-inThe empty or full container enters the origin terminal or depot.
LoadedThe container is loaded onto the ocean vessel.
Vessel departureThe ship sails from the load port (the free-time clock has not started yet).
TransshipmentOn indirect routings, the box is discharged and reloaded at a hub port.
Arrival & dischargeThe vessel arrives at the destination port and the container is discharged; this is when import demurrage free time starts.
Gate-out / deliveredThe container leaves the terminal for delivery; detention free time runs until you return it empty.
Recently discharged ONE shipments
last 60 days
A sample of ONE containers TrackingMCP followed to discharge recently (numbers masked for privacy):
Container
From
To
Discharged
ONEU•••04
Tokyo, Tokyo
Taichung City
2026-06-28
ONEU•••92
Gijon
Durban
2026-05-23
ONEU•••13
Fremantle
Hong Kong
2026-05-19
ONE demurrage & detention free time
free-time clock
Every ONE import container has a free-time clock: the calendar days before demurrage (box left in the terminal) or detention (box kept out too long) charges start. Across the 42 countries where ONE publishes tariffs, a 40ft import container typically gets about 6 free demurrage days and 5 detention days before charges begin. Look up ONE's published free days by country on the free-time reference →, and TrackingMCP alerts you before the clock runs out.
ONE container number format, and the mistakes that break tracking
ISO 6346
A ONE container number follows ISO 6346: four letters, six digits, then a check digit: for example KKFU 123456 7. The first three letters identify the owner (KKFUKKLUKKTUKPLUMOLUNYKU), the fourth is the equipment category (usually U).
Letter O vs zeroThe classic. Container numbers never contain the letter O in the digit positions. If tracking returns nothing, check character 5 onwards.
Spaces and hyphensFine either way; TrackingMCP strips them. But a missing final check digit makes the number unresolvable.
B/L pasted as a container numberBills of lading have a different shape (often starting ONEY). Paste it as-is and the format is auto-detected.
Wrong check digitOne mistyped digit fails silently on many carrier sites. Validate any number with the free ISO 6346 check-digit calculator →
ONE tracking statuses that confuse people
5 answers
RolledYour container missed its planned vessel; usually overbooking or a schedule change, and is rebooked onto a later sailing. The new ETD/ETA shows once the carrier assigns the next vessel.
Transshipment in progressThe box was discharged at an intermediate hub and is waiting for its connecting vessel. Days without a new event here are normal; hubs often move a box only when the connection arrives.
Discharged vs. availableDischarged means the crane took the box off the ship; available means the terminal has released it for pickup after unstacking, customs and fee clearance. The gap is typically hours to a few days.
Customs or carrier holdThe container is physically at the terminal but blocked from release; customs inspection, unpaid charges, or missing documents. Tracking looks "stuck" until the hold clears.
Empty returnedThe importer has returned the empty box to the depot; the shipment cycle is complete and this is the final event on most timelines.
ONE tracking not updating? Six reasons
6 reasons
Carrier events lag at origin. ONE's own systems often post the first events 24–48 hours after gate-in or loading. If your booking is fresh, the timeline fills in as the carrier's data catches up.
The box is on a feeder or transshipment leg. Between discharge at a hub and loading onto the connecting vessel, many carriers publish nothing. The live vessel position keeps moving on TrackingMCP even when ONE's milestones pause.
Wrong reference type. A booking number can stop updating once the carrier splits it into containers. Track by container number for the fullest history; TrackingMCP auto-detects which type you pasted.
The shipment is too new. A booking confirmed today may not be in ONE's public tracking yet. It usually appears within a day of the carrier issuing the booking confirmation.
Mid-ocean quiet stretch. On a long leg there are simply no port events to report. Satellite AIS position and the forecast ETA still update daily; milestones resume at the next port call.
A typo in the reference. One wrong character (the letter O vs zero is the classic) returns an empty or stale record. Validate the number with the free ISO 6346 check-digit calculator.
Carrier reference facts last reviewed July 2026.
ONE tracking FAQ
8 questions
How do I track a ONE shipment?
Enter your ONE container number, bill of lading, or booking reference in the search box above. TrackingMCP auto-detects the format and returns live carrier events, the vessel's AIS position, and a forecast ETA. Your first shipment is free, no account needed to start.
What is ONE's SCAC code?
ONE's SCAC (Standard Carrier Alpha Code) is ONEY. TrackingMCP uses it to route your reference to the right carrier automatically.
What do ONE container numbers look like?
ONE containers follow the ISO 6346 standard; four letters then seven digits; beginning with prefixes such as KKFU, KKLU, KKTU, KPLU.
How accurate is ONE tracking?
Every ONE shipment is cross-checked across four independent sources; the carrier's own events, live AIS vessel position, the published schedule, and a forecast ETA, so one stale or wrong source can't mislead you.
Why is my ONE tracking not updating?
Usually one of: ONE posts events 24–48h behind reality at origin, the box is between vessels at a transshipment hub, the shipment is too new to be in the system, or there's a typo in the reference. TrackingMCP cross-checks the live vessel position and schedule, so you still see movement while carrier milestones pause.
How reliable are ONE's schedules?
On the lanes TrackingMCP measures, ONE arrived on schedule 57.8% of the time across 441 tracked arrivals (25 lanes, trailing 12 months); the typical delay when late was 1.4 days (34.1 hours). That's measured from actual arrivals vs. the published schedule, not a marketing figure.
Which alliance is ONE in?
ONE (Ocean Network Express) is a member of the Premier Alliance, alongside HMM and Yang Ming.
Which trade lanes does ONE serve?
ONE serves Global, Transpacific, Asia–Europe, Latin America. TrackingMCP tracks ONE shipments across all of them.