Container leasing and trading guides
Plain answers to the questions container lessors, traders and depots deal with every day: charges, grades, sizes, numbers and paperwork.
Demurrage vs detention vs per diem: what each charge means
Demurrage is charged while a container waits inside the terminal, detention while it is outside. How per diem fits in, how days are counted, and the US billing rules.
7 min readFree days and per diem in container leasing: how to count them
How container lessors count rental days, free days and per diem, with worked examples, partial invoices, depot storage and the mistakes that cause billing disputes.
7 min readShipping container grades: new, one trip, IICL, cargo worthy, WWT and as is
What new, one trip, IICL, cargo worthy (CW), wind and water tight (WWT) and as is mean, how they compare, and what to check before buying or leasing a container.
7 min readShipping container sizes and dimensions: 20 ft, 40 ft, 40 ft high cube and 45 ft
External and internal dimensions, volume, tare and maximum gross mass of 20 ft, 40 ft, 40 ft high cube and 45 ft containers, with their ISO size codes and TEU count.
6 min readContainer numbers and ISO codes explained (ISO 6346)
How a container number is built (owner code, category, serial number, check digit), how to calculate the check digit step by step, and how to read ISO size and type codes like 22G1 or 45G1.
7 min readRelease orders, EIR, gate-out and gate-in: the paper trail of a container move
What a container release order and a return (drop-off) instruction are, what an equipment interchange receipt (EIR) records, and how gate-out and gate-in dates drive per diem and storage.
7 min read