After the Japanese registered Hakone Maru, the vessel set sail for the first time from Japan on August 27, 1968, on its voyage to Oakland, United States. It was a giant step in maritime cargo transportation – especially the transportation of standardized box containers. It carried 752 twenty-foot shipping containers (TEUs) on its maiden voyage.
Corrugated steel containers for cargo transport developed by the American entrepreneur Malcolm Maclean in 1955 were already popular.
Today,...
https://www.marineinsight.com/maritime-law/foldable-containers/