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Containerisation begins: SS Ideal X first container voyage

26 April 1956·Economy & trade·United States (Newark to Houston)·
26 April 1956Date
Economy & tradeCategory
9Empires active
Date
26 April 1956
Category
Economy & trade
Region
United States (Newark to Houston)
Era
Contemporary
Significance

On 26 April 1956, the SS Ideal X, a converted World War II T-2 oil tanker owned by Malcom McLean's Pan-Atlantic Steamship Company, departed Port Newark, New Jersey, carrying 58 standardised 35-foot truck-trailer containers alongside a load of bulk petroleum, and arrived at the Port of Houston, Texas, five days later.

Though not the first purpose-built container vessel, the Ideal X was the first commercially successful one, demonstrating that loading cargo in uniform metal boxes could cut handling costs from roughly $5.83 per ton by conventional break-bulk methods to less than $0.16 per ton, with the containers loaded in under eight hours. This proof of concept validated the intermodal shipping container, a simple steel box that could move seamlessly between ships, trucks, and trains without repacking. McLean went on to found Sea-Land Service in 1960, and the model he pioneered was progressively standardised and adopted worldwide. Containerisation slashed shipping costs and transit times, mechanised ports, and became a foundational enabler of late twentieth-century global trade and the modern globalised economy.

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