What is reefer shipping?โ
A specialized method of sea transport, reefer shipping utilizes refrigerated containers to maintain optimal temperatures for sensitive cargo throughout long ocean voyages.
This type of shipping differs significantly from standard container shipping due to the differences in ship and container types. The word โreeferโ is a shortening of the phrase โrefrigerated container.โ
How reefer shipping containers work?
While reefers externally resemble standard shipping containers, they feature thick layers of insulation materials, an electrical generator, powered ventilation systems, and refrigerant gases to control the temperature inside. As powered units, they must be constantly supplied with electrical energy to function correctly. The power comes from either the reefer ship or a shore source. Transportation staff must also regularly monitor each container to ensure the internal temperature is optimal for the type of goods transported.
For example, when transporting vegetables, the internal temperature must typically remain between 30ยฐF and 55ยฐF (-1 to 13 ยฐC). To preserve their quality, texture, and flavor, certain frozen goods must be shipped at a bone-chilling -4ยฐF (-20ยฐC).