This thesis analyzes the behaviour of cargoes that may liquefy. It provides a detailed analysis of the cargoes involved, the characteristics of granular and non-granular cargoes, the causes of their liquefaction and their differences. Additionally, the thesis separately analyzes individual bulk cargoes, highlights the risks they pose due to liquefaction, outlines how to handle such cargoes and specifies the measures to follow to avoid adverse situations. Special attention is given to the cargo moisture content and its role in the overall process. Can test explains how cargo moisture content could be checked in practice. Additionally, the thesis presents the types of vessels that transport bulk cargo, including their basic classifications and characteristics. This is followed by a discussion of incidents involving vessels that experienced liquefaction. Later in the thesis, the preventive measures that can be taken to avoid such occurrences are outlined. The structural integrity of the vessel's hull and its role in liquefaction are briefly mentioned, along with the considerations for vessels transporting bulk cargo without a central bulkhead and those carrying ore. Lastly, the thesis emphasizes the procedures related to cargo that the crew must perform before and during loading, as well as during the voyage, all to prevent accidents caused by the phenomenon of cargo liquefaction.