THE INEVITABLE MOISTURE

The largest sources of moisture problems inside closed containers are the cargo, its packaging, the flooring, the air and hygroscopic extra packaging materials. Due to several factors, such as the difference between daytime heat and overnight cooling, water vapor condenses inside the container causing water to drip down on the cargo, so called container rain.

The amount of moisture is dependent on duration of transport route, outside and inside temperature, humidity, wind and of course the cargo itself. This means that even small differences in the cargo and voyage conditions can have a huge effect on the outcome.

CARGO AND CONTAINER SWEAT

Cargo sweat
Cargo sweat occurs when moving cargo from a cold or temperate climate to a tropical one. The air containing moisture or water vapor condenses out on the cargo or its packing.

Container sweat or container rain
This is water vapor in the air condensing or forming on the inside surfaces of the container when moving from tropical or temperate climates to cooler areas.

Dew Point
The dew point is the point when condensation occurs on any surface. We have attached a dew point table for you to download.