Container Tracking: What Each Stage Means
The 12 events you'll see on a container tracker, what each means, typical durations, and what to do at each step.
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Open calculatorContainer Tracking: What Each Stage Means
A typical ocean container shipment from Asia to the US passes through about a dozen tracked events between booking and final return of the empty container. Each event has implications for cost, timing, and your action items. This guide explains each stage with typical durations and what to do at each step.
The full lifecycle
A common sequence:
- Booking confirmed by carrier
- Empty container picked up at the carrier's depot
- Container at shipper (your manufacturer)
- Container gated in at the origin port
- Container loaded on vessel
- Vessel departed origin port
- Vessel arrived destination port
- Container discharged from vessel
- Container available for pickup at terminal
- Container picked up by trucker
- Container at consignee (your warehouse)
- Empty container returned to carrier's depot
Stage 1: Booking confirmed
Typically 7 to 21 days before vessel departure for a confirmed booking. Carriers offer:
- Standard contract rates: negotiated annually with major shippers.
- Spot rates: available for one-off shipments, typically more expensive.
- NVOCC rates: through non-vessel-operating common carriers, who consolidate volume for buying power.
At booking, you (or your freight forwarder) commit to a specific vessel, voyage, container type, and rate. Cancellation fees apply if you no-show.
Stage 2: Empty container picked up
The shipper picks up the empty container at the carrier's nearest depot 3 to 7 days before the cut-off for vessel loading. The shipper must:
- Have a valid haulier (trucking company).
- Pay any deposit if required.
- Position the container at the factory by the agreed date.
Free time at the depot: usually 5 days; after that, demurrage starts at the depot too.
Stage 3: Container at shipper
Your factory loads the container. Critical actions:
- Match contents to the packing list.
- Photograph the loading sequence for evidence of cargo condition.
- Apply the container seal at the end of loading. The seal number is recorded on the BoL.
The factory typically has 5 to 7 days free time to load before they must return the container.
Stage 4: Container gated in
The container arrives at the origin port (or a CFS / inland depot) and is checked in. The carrier marks it as received.
This event triggers:
- The ISF (Importer Security Filing) requirement: must be filed 24 hours before vessel loading. Late ISF = up to 5,000 USD penalty per filing.
- Any pre-loading customs export controls or inspections.
Stage 5: Container loaded on vessel
The carrier loads the container onto the vessel. ISF must already be on file. Any pre-loading export issues must be resolved.
Stage 6: Vessel departed origin port
The vessel sails. Transit time begins. This is the start of the longest single stage of the shipment.
Trans-Pacific (Asia to USWC): 12 to 16 days Trans-Pacific (Asia to USEC via Panama): 18 to 28 days Trans-Atlantic (EU to USEC): 7 to 12 days Asia to NWE (via Suez): 25 to 35 days Asia to NWE (via Cape, when Suez disrupted): 35 to 45 days
Tracking during voyage: the AIS (Automatic Identification System) gives a real-time vessel position. Carrier tracking shows just the next port call.
Stage 7: Vessel arrived destination port
The vessel arrives. Discharge does not happen immediately; the vessel waits for berthing, which depends on terminal congestion. Free time after arrival before demurrage starts: typically 5 days at the terminal.
Stage 8: Container discharged
The container is unloaded from the vessel onto the terminal yard. Customs entry can be filed before or after discharge:
- Pre-arrival processing: file the entry up to 5 days before vessel arrival. Goods can clear customs on arrival.
- At arrival or after: standard timing.
Stage 9: Container available for pickup
The container is gate-out ready: customs cleared, terminal handled, ready for trucker pickup. At this stage:
- Customs released: CBP has cleared the entry.
- Freight released: the carrier has released the container against the BoL.
- Terminal released: terminal charges paid.
All three must be in place before pickup. Missing any one means the trucker arrives and is turned away.
Stage 10: Container picked up by trucker
A trucking company comes to the terminal, takes the container, and starts toward your warehouse.
Demurrage clock stops at pickup; detention clock starts.
Stage 11: Container at consignee
The container arrives at your warehouse. You unload (live unload at the door, or drop and pull).
Free time for unloading: typically 1 to 5 days depending on the carrier and contract.
Stage 12: Empty container returned
The trucker takes the empty back to the carrier's depot. This is the final event for the container.
Detention clock stops. If you exceeded free time, the bill arrives later.
What can go wrong at each stage
| Stage | Common issue | Cost or risk |
|---|---|---|
| Booking | Rate change before sailing | Higher cost than quoted |
| Empty pickup | Depot has no available containers | Delayed loading; may miss vessel |
| At shipper | Loading delay, missing documentation | Missed sailing; reschedule fee |
| Gated in | Cut-off missed | Vessel sails without container; reschedule |
| Loaded | ISF not filed | Penalty up to 5,000 USD |
| Vessel departed | Weather, port congestion at next call | Transit delay |
| Vessel arrived | Berthing delay | Demurrage starts after free time |
| Discharged | Exam hold | Multi-day delay, exam fees |
| Available for pickup | Customs not yet cleared | Demurrage; rush brokerage |
| Trucker pickup | Trucker no-show | Reschedule, demurrage continues |
| At consignee | Unloading delay | Detention |
| Empty return | Late return | Per-diem detention bill |
Tracking tools
- Carrier websites: Maersk, MSC, CMA CGM, Hapag-Lloyd, ONE, Evergreen, COSCO, etc. each have their own tracker.
- Aggregators: project44, FourKites, GoComet, and similar provide unified visibility.
- AIS: MarineTraffic, VesselFinder show real-time vessel positions.
- CBP ACE: shows the customs side (entry status, exam hold, release).
Reducing dwell time
- File ISF promptly: 24 hours before vessel loading is the legal minimum, but earlier reduces the risk of last-minute issues.
- Pre-arrival customs filing: file the entry summary 5 days before vessel arrival.
- Pre-pay duty: have the broker's ACH account funded.
- Coordinate trucker pickup: schedule trucker before container is available.
- Track exam hold flags: if your entry is selected for exam, work with the broker immediately.
- Demurrage-detention combined free time: some contracts give combined 7-9 days; manage to that.
How the calculator helps
The LandedFees calculator includes a container tracking tool that:
- Estimates transit time for major lanes.
- Forecasts arrival date based on vessel sailings.
- Notes demurrage and detention free times for major US ports.
- Computes worst-case demurrage exposure if customs is delayed.
Related guides
- How to Calculate Freight + Insurance
- Commercial Invoice vs Packing List vs BoL
- What Is a Customs Broker and When Do You Need One
- Reading Your Landed Cost Report
- Incoterms 2020 vs Landed Cost: A Clear Guide
- FOB vs CIF vs DAP: Which Costs You More?
Track your next shipment with the LandedFees calculator.
Frequently asked questions
How long does a Shanghai to Long Beach container take?
Sea transit alone: 12 to 18 days. Total door-to-door (factory to US warehouse): 30 to 45 days including booking, inland transit, port dwell, customs clearance, and inland delivery.
What does 'Empty Returned' mean?
Your container has been returned to the carrier's depot after unloading. Ends your liability for chassis fees and demurrage. The final event for the container in your shipment.
What is demurrage vs detention?
Demurrage is charged by the terminal for containers that overstay at the port. Detention is charged by the carrier for containers that overstay outside the port (at the buyer's warehouse). Both add up fast: 30 to 100 USD per day per container.
What is 'Vessel Departed' vs 'Vessel Arrived'?
Departed: the vessel left the loading port. Arrived: the vessel arrived at the destination port. The gap is the sea transit; for trans-Pacific it's 12-18 days, for trans-Atlantic 7-12 days, for Asia-Europe via Suez 25-35 days.
Why does my container sit in port for days after arrival?
Port dwell. Causes: customs not yet cleared, exam hold, broker not yet released, vessel discharge backlog, terminal congestion, trucker pickup not yet arranged.
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