Ship’s Sweat
A voyage from a warmer to cooler climate with cargo loaded warm and meeting cooler air should not cause the formation of cargo sweat. However in such circumstances there is the possibility of ship’s sweat. Ships sweat can occur when warm moist air comes into contact with the cooler steelwork. Ships sweat can form below the hold deck heads, on the undersides of hatch covers and on the side plating of cargo holds. This sweat may drip onto or come into contact with the cargo. Thus ships sweat can also cause damage to sensitive cargoes. This can be avoided by introducing cooler, drier air into the holds. Ships swear can form on the ships side when meeting a cold current even when the air temperature is high. Inspections of holds should be conducted to check for signs of this. Hold ventilation should be open at all times except when the external air has a high humidity and the dew point of this external air is higher than that of the air in the hold or adverse weather is causing spray in the vicinity of the ventilator intakes.
