Three documents, three jobs
For an ocean container shipment, three documents are commonly prepared from overlapping data. Shipping instructions tell the carrier or forwarder what to put on the transport document. The verified gross mass states the weight of the packed container. The bill of lading, issued by or for the carrier, records the contract of carriage and, depending on its type, the receipt of the goods. They are related, but they do not have the same legal role, and an error in one does not automatically correct itself in another.
VGM: a shipper’s responsibility
The International Maritime Organization’s guidelines on the verified gross mass of a container, issued under SOLAS requirements, say that the shipper named on the bill of lading or equivalent document is responsible for obtaining the verified gross mass of a packed container and for providing it in a shipping document before the container is loaded. The guidelines describe two methods: weighing the packed and sealed container, or weighing all the cargo and contents and adding the container’s tare mass. The carrier and the terminal rely on this figure for the stowage plan.
Two practical points follow. The verified mass is not the weight on the invoice, which may be a net or estimated figure. And the person who signs the declaration is making a statement of responsibility; it is best not to leave it to the last hour.
Who confirms what
| Item | Typically confirmed by | Where it appears |
|---|---|---|
| Shipper, consignee and notify party names and addresses | The shipper, with the buyer’s details | Shipping instructions; printed on the bill of lading |
| Description of goods | The shipper | Shipping instructions, bill of lading, and consistent with the commercial invoice |
| Number and kind of packages | The shipper, from the packing list | Shipping instructions, bill of lading |
| Verified gross mass of the container | The shipper, by one of the two methods | VGM declaration submitted per the carrier’s process |
| Container and seal numbers | Recorded at stuffing; checked against the booking | Shipping instructions, bill of lading |
| Freight terms (prepaid or collect) | Agreed with the buyer and the forwarder | Shipping instructions, bill of lading |
A fictional annotated mismatch
Fictional example, invented to show the cross-check
Shipping instructions: "20 pallets, 400 cartons, ceramic tiles, gross weight 18,200 kg". VGM submitted: 19,640 kg for the packed container. Packing list: 400 cartons, 18,200 kg gross for the cargo, plus pallets. Bill of lading draft: "400 cartons" and no pallet count.
Three differences are visible. The VGM includes the container tare and the pallets, which the instruction figure does not, and that is consistent. The draft bill omits the pallet count that the instructions state, and that is not consistent. A short message to the forwarder before cut-off asks for the pallet count to be added. If the same draft had named a different consignee from the one in the instructions, the correction would be more serious, because the name controls who may take delivery.
A cross-check before the cut-off
- Read the three documents side by side and mark every item that appears in two or more.
- Check names, spelling and addresses character by character on each document.
- Check counts: packages on the packing list, instructions and draft bill of lading should agree, with pallets stated the same way.
- Check weights: say which figure is cargo weight, which is packed-container mass, and do not mix them.
- Check the container and seal numbers against the booking confirmation.
- Check freight terms and the type of bill requested against the sale terms and the buyer’s instruction.
- Confirm the carrier’s cut-offs for instructions and VGM, and who submits each.
Why timing is part of the check
Carriers set cut-off times for submitting instructions and VGM. A late or amended submission can mean a missed vessel or an amendment fee under the carrier’s terms. The amount of time you need depends on how many people must confirm, so ask for the cut-off times when you book, not on the day.
Amendments: what they cost and how to avoid them
An amendment after the carrier has issued a draft or a final bill of lading can carry a fee and, close to the cut-off, can risk the booking. The cheapest correction is the one made before the first draft is generated, which is why the cross-check belongs before the cut-off and not after the draft arrives. When an amendment is unavoidable, ask the carrier what it costs, how long it takes and whether the vessel cut-off is affected, and tell the buyer if the consignee or the freight terms change, because the buyer’s bank or customs broker may have already prepared documents against the earlier version.
Who in your team signs what
Write down who may submit shipping instructions, who may declare the verified gross mass and who may approve a draft bill of lading. These are three separate acts, and each carries responsibility. A person who signs the mass declaration without having seen the weighing record, or who approves a draft without comparing it to the instructions, is making a statement they cannot support. A short authorization list, kept with the booking, removes the doubt on the day.
Keeping the linked records
Keep the weighing ticket or the calculation behind the verified mass, the signed instructions and the final bill together. If a question arises months later about a weight or a name, the three documents answer it together, and none of them has to be reconstructed from memory.
Limits of this guide
Not every document has the same legal role. The effect of a bill of lading depends on its type and the applicable law, and the guidelines on verified mass describe the SOLAS-based approach but local rules and carrier processes add detail. FIATA publishes standard forwarding documents that its members may use, and their terms differ from a carrier’s bill of lading. The example is fictional and describes no real shipment.