For ship sweat to occur, the dew point in the cargo hold must exceed the temperature of the ship's structure. To eliminate ship sweat, the cargo should be ventilated if the ship is moving from a warm to a cold climate.
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When air moisture settles on the cargo, it is referred to as 'cargo sweat'.Condensation on the ship's structural elements inside the cargo hold is called 'ship sweat'. Both phenomena are directly related to the dew point, the temperature at which air becomes saturated with water, triggering condensation.
'Dew Point Rule'or 'Three Degree Rule'The Three Degree Rule states that a cargo hold should be ventilated when the dry bulb temperature of the outside air is at least 3°C lower than the temperature of the cargo.
While air freight relies on jet engines that consume large amounts of fuel, sea vessels typically use more fuel-efficient engines, reducing their impact on the environment. Sea freight transportation helps to build a more sustainable supply chain.