A Short History of the Container

The container exists because a North Carolina trucking man got fed up watching cargo handled three separate times — off a truck, across a wharf, into a ship's hold, piece by piece. Seventy years on, what replaced that process hasn't fundamentally changed, and the four corner castings it settled on are the reason a single range of hardware can still serve almost any box built since.

• 1956 — A converted tanker sails. The Ideal X leaves Port Newark for Houston on 26 April with 58 thirty-five-foot boxes lashed to her deck — the first commercially viable container voyage.
• 1961 — Standardisation begins. ISO establishes Technical Committee 104, Freight containers, opening a debate over dimensions that would run for most of the decade.
• 1966 — First ocean crossing. Sea-Land's Fairland leaves New Jersey in April and docks in Bremen on 6 May, opening the first international container service.
• 1968 — Dimensions fixed. ISO Recommendation R 668 sets the external dimensions and ratings for Series 1 containers, the point at which a box loaded anywhere begins to fit equipment everywhere.
• 1972 — Safety made law. The International Convention for Safe Containers is concluded in Geneva on 2 December, establishing the approval and examination regime behind the CSC plate.
• 1977 — Two dates worth noting. The CSC convention enters into force on 6 September; that same year, in July, the Durban Container Terminal opens — containerisation reaches the South African coast.
• 1981 — Every box is named. ISO 6346 introduces the owner code, serial number and check digit stencilled on the door of every container handled since.
• 1984 — The corner casting is specified. ISO 1161 defines the corner fitting — the single interface every twistlock, lashing point and lifting device engages.
• 1997 — Handling and securing codified. ISO 3874 consolidates handling and securing practice, the standard underlying twistlocks, stacking fittings and lashing arrangements.
• 2007 — Room made for the forty-five. Amendment 1 to ISO 1161 extends the corner-fitting provisions to 45 ft containers, formalising a size the market had already adopted.
• 2020–22 — Still under revision. ISO 668 is reissued in 2020 and ISO 6346 in 2022 — a seventy-year-old framework still being actively maintained.
• Today — Why this isn't just history. The corner casting has outlasted every ship, crane and operator that has ever used it — which is why one range of hardware still fits a box built in 1975 as readily as one built last year.

Loading costs after Marc Levinson, The Box, Princeton University Press, 2006.