Why ventilate?; Safety; How to use this guide; Glossary of terms; When to ventilate; Cargoes that may require ventilation; What is sweat? The simple explanation; Hygroscopic/non-hygroscopic cargoes - know your cargo; Finding the dew point; Three-degree rule - applicable to hygroscopic agricultural cargoes only; How effective is ventilation?; When should cargo be ventilated?; When should ventilation be stopped?; Types of ventilation systems; Stowage and Dunnage; Recent developments in the rice trade; Carges that do not fit the rules; Equipment for measuring the dew point; Myth or truth?; Air, moisture and relative humidity; How much condensation is produced; Hygroscopic cargoes; Scientific rational for ventilation.