Carton Count on a Marine Container
A marine container is declared as 24 pallets, 20 cartons per pallet, for 480 cartons at a declared net weight of 6,000 kg - that is, 12.5 kg per carton. You open and count three pallets and find 19, 20, and 18 cartons. You weigh those 57 cartons: 741 kg total. Your port's procedure for carton-count variances reads: under 2% - record only; 2% to 5% inclusive - full count of the container; over 5% - full count plus referral to the compliance team. The importer's broker states the shortfall is "a rounding issue" and asks for release against a posted security, noting the container has been sitting for six days.
1. Compute the sample variance and the projected container total. State which procedural tier applies, and identify any weakness in that tier decision.
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Sample
- Expected in three pallets: 3 × 20 = 60 cartons
- Found: 19 + 20 + 18 = 57 cartons
- Variance: −3 cartons on 60 = 5.0%
Projection
- Ratio found/expected = 57/60 = 0.95
- Projected container total: 480 × 0.95 = 456 cartons, a projected shortfall of 24 cartons
- Note the shape of the number: 24 missing across 24 pallets is one carton per pallet on average. That is a pattern, not rounding. Rounding produces scatter, not a consistent per-unit deficit.
Tier
5.0% falls exactly on the upper bound of "2% to 5% inclusive," so the plain reading gives full count of the container, with no automatic compliance referral. Flag the boundary: had the rule read "5% or more" for referral, the answer would flip on the same facts.
Weakness in the tier decision
Three pallets out of 24 is a small sample and 5.0% is an estimate, not a measurement. The true rate could be well above 5%. Illustration: if a fourth pallet came in at 16 cartons, the sample would be 73 of 80 = 8.75% - comfortably in the referral tier. Treat 5.0% as a floor, complete the full count, and decide on referral from the completed count rather than from the sample.
2. Evaluate whether the weight data supports the broker's "rounding" explanation. Show the arithmetic.
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Arithmetic
- Actual average: 741 kg ÷ 57 cartons = 13.0 kg per carton
- Declared: 12.5 kg per carton
- Per-carton error: 0.5 ÷ 12.5 = +4.0%
- Expected weight of the 57 counted cartons at the declared rate: 57 × 12.5 = 712.5 kg; actual is 741 kg, i.e. +28.5 kg
Does weight support short-shipment?
No - it does the opposite, and it does so in a way that could mislead. If the container really held 456 cartons at 13.0 kg each, the total would be 5,928 kg against a declared 6,000 kg: only −1.2%, which on weight alone would sit in the "record only" tier. A weight check would therefore have masked a 5% count variance.
Substantive point
The two errors partly cancel numerically but are independent findings:
- Fewer cartons than declared.
- Heavier cartons than declared - a second, separate error in the declaration.
Do not let one offset the other and conclude "close enough." And do not accept "rounding": a systematic one-carton-per-pallet deficit suggests either a different packing standard at origin or a broker carrying forward a per-pallet figure that never matched the load.
3. The broker wants release now against a posted security. Recommend what you do and why.
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Recommendation: complete the full count before release; then decide on referral.
Reasoning
- The procedure already mandates a full count at 5.0%. Six days of waiting is a commercial inconvenience, not a reason to skip a step the port's own rule requires. If delay becomes an operational problem, that is a management escalation, not a field decision.
- Security addresses revenue risk. It does not address whether the declaration is accurate, and it does not cure a 24-carton discrepancy - the goods still have to be accounted for.
- The +4% per-unit weight error means you cannot reconstruct the true quantity from the manifest. The manifest is unreliable in two dimensions, so inference is not available; counting is.
- A full count is cheap relative to the size of the discrepancy, and it converts an unstable estimate into a fact.
Disposition
- Full count, all 24 pallets, counted by two officers or counted and re-counted.
- Record both findings separately: carton count and per-unit weight.
- If the completed count exceeds 5%, refer to compliance as the rule requires.
- Give the broker the count figures in writing and the reason for the hold. "Rounding" should be answered with numbers, not adjectives.