Chemistry and use of working substances (part 2) - is a mandatory component of the cycle of professional training for 2тв course students of Іpeciality 271.02 - Sea and inland water transport. This discipline helps students gain knowledge about the physical-chemical properties of fuels, lubricants and water used as working substances on ships, familiarizes them with the requirements of international standards and conventions regarding the use of fuels and lubricants, creates an idea and forms a knowledge base in the procedures of reception and storage, analysis and elimination of the specified working substances.