Chemical tankers are unique types of vessels specifically designed for that purpose. The main features of the chemical tankers are separate storage areas and separate pumps and pipelines. Transport of chemicals includes transport of dangerous goods; therefore, a great attention is devoted to quality and anti-corrosive properties of tanks, fire precautions, systems for prevention of sea pollution, as well as meeting the specified standards and regulations that directly affect the safety of the ship, crew and cargo. An important step in the process of preparing and loading the chemicals is constructing the table of compatibility cargo. This paper defines characteristics of dangerous goods and their transport at the sea focusing on specifications of their transport. Paper also presents analysis of physical and chemical substances. It describes compatibility chart on ships for transport of chemicals with a few examples of deviations, preparing to board chemicals and methodology tanker officer training standards for cargo loading.