Moisture Migration
- As the ship proceeds on her voyage there will be some transfer of moisture through the stowed cargo. This movement is called moisture migration.
- It has been found that moisture migration coupled with ship’s sweat can result in damage to cooler parts of the cargo unless the excessive moisture can be removed. Adequate dunnage to protect cargo from contact with steelwork is vital.
- To enable a more detailed consideration of the conditions in the hold and outside, six temperatures are relevant.
- Outside Air Temp and Dew Point
- Hold Temp and Dew Point
- Sea Temperature
- Temperature of Cargo Mass.
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