Quality and inspection
Weights and shortfall.
A weight difference between loading and delivery is common and it is not automatically a shortfall. Moisture leaves the goods, tare is measured differently, and scales disagree. Knowing which explanation applies decides whether you have a claim or an argument.
Where the difference comes from.
Four causes, and they need different responses.
- Moisture loss
- Agricultural goods loaded near their upper moisture limit lose water over weeks at sea. It is physics rather than theft, and it is why moisture at loading is a commercial number.
- Tare and packaging
- Net, gross and the weight of the bags, pallets and dunnage. Two parties measuring different things will disagree by exactly that amount.
- Scale differences
- Weighbridges have tolerances and they are calibrated to different standards. A small percentage difference between two scales is normal.
- Actual shortfall
- Fewer bags than declared, or bags filled light. This is the one worth pursuing and it shows in a piece count rather than only in a weight.
How to tell them apart.
Count the pieces. A full bag count with a weight difference points at moisture or tare. A bag count that is short is a different conversation entirely.
Compare against the moisture at loading. Goods loaded wet arrive lighter and that was foreseeable, which is why buyers who specify moisture rarely have this argument.
Check what each weight measured. Net weight of goods against gross including packaging is the single most common source of a phantom shortfall.
Look at the seal. An intact seal with a full count and a light weight is not a theft scenario.
What to agree before shipment.
Five lines in the contract, all of them cheaper than one argument about a weighbridge.
- 01
Which weight governs
Weight at loading or weight at discharge. Pick one, put it in the contract, and make sure your onward sale says the same thing.
- 02
A weight tolerance
A stated percentage either way, which is normal in commodity trade and prevents an argument about a difference everyone expected.
- 03
Who weighs and where
A named independent surveyor at a named point removes most of the dispute. It costs less than one argument.
- 04
Moisture at loading
A maximum figure on the certificate. It protects you from paying freight on water and from the shortfall that follows.
- 05
Net or gross
Say which, everywhere: the contract, the invoice, the packing list and the certificate.
The weight nobody thinks about.
A container has a legal maximum and the goods plus the packaging plus the box have to fit inside it. Dense goods reach it long before the container is full.
The gross mass of a packed container has to be verified and declared before it is loaded onto a vessel. It is the shipper's obligation and a wrong figure stops the container rather than delaying it.
For dense commodities, plan the loading on payload rather than on volume, and check the arithmetic before booking rather than at the terminal gate.
Questions buyers ask.
My container weighed less on arrival. Was I robbed?
Probably not, if the seal was intact and the piece count is right. Moisture loss and tare differences explain most of it. A short piece count is the version that deserves a claim.
Should weight be determined at origin or destination?
Whichever your onward contract says, because a mismatch between your purchase and your sale leaves you carrying the difference. If you are the end user, destination weight protects you and costs more.
Is a weight tolerance normal?
Yes, in commodity trade it is standard practice. Agreeing one in advance is what stops a routine variation becoming a dispute.
Read next.
What an export contract should say
Twelve clauses that decide what happens when something goes wrong, and the three buyers leave out and regret.
When the shipment is wrong
The first forty-eight hours decide what you can recover. What to do in order, and what destroys a claim.
Container loading and what actually fits
The cubic capacity figures in circulation disagree with each other. What really decides a load is weight, geometry and the carrier's own specification.
Working out a landed cost
Everything between the factory price and the shelf. The twelve lines it contains, and the four that buyers forget.
Weight and quality certificate
A third party weighs and samples at loading. What it settles, and why buyers of bulk agricultural goods insist on it.
Verified gross mass
A container cannot be loaded to a vessel without a verified gross mass. Who provides it, how it is obtained, and why it catches first-time shippers.
Commercial invoice and packing list
The plainest documents in the set and the ones that stop the most shipments, because customs and the bank read them against everything else.
Checking goods on arrival
Twenty minutes per delivery catches most problems while you can still act on them.
Moisture and water activity
Moisture content is what you paid freight on. Water activity decides whether it spoils.
Sourcing from Indonesia?
Tell us the product, the quantity and the destination. We come back with what it involves before anyone talks about money.
Sources
- 1SOLAS requirement on verified gross mass of containers. International Maritime Organization. Checked 5 August 2026.