Port maths, without the phone calculator
Chargeable weight, unit conversions, the free-time clock and TEU arithmetic — the four sums that decide what a shipment pays for.
Weight: kg ↔ lb
Port paperwork mixes metric and imperial by design. Both directions, exact conversion.
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Volume: m³ ↔ ft³
1 m³ = 35.3147 ft³. Cargo is rated in m³ and measured in feet depending on who booked it.
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LCL chargeable weight (W/M)
Less-than-container-load is rated on the greater of weight in tonnes and volume in cubic metres — the revenue tonne. The industry convention is 1 m³ = 1,000 kg, so a light bulky consignment pays on its volume. Check your own tariff: some trades and NVOCCs use a different ratio, and we do not assume one.
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Free time, demurrage and detention
Demurrage runs on the box inside the terminal, detention on the box outside it. Both start when free time expires — and the day of discharge is normally excluded, which is why the counter starts the day after. This is arithmetic, not your contract: your tariff decides the actual free days, the free-time basis and the rate.
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TEU arithmetic
A TEU is one twenty-foot equivalent unit; the standard 40-foot box is 2 TEU. That is a definition, not a capacity figure — a nominal 2 TEU box does not carry twice the cargo of a 20-foot box.
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Vessel schedule lookup
Next on the build list. There is no single free, machine-readable place where carrier schedules live — the honest options are each carrier's own published timetable (one ingest per carrier) or a licensed schedule feed. Until one of those is wired up, this card shows nothing rather than showing a guess.
Today's service and rotation stories are on the Cargo & Carriers desk; berth and channel constraints are on the Port Ops Board.