Air pollution Emissions from shipping, especially SOX, NOX, and PM, are perceived increasingly as a problem for human health and the environment. Efforts by the International Maritime Organisation to reduce these emissions by international agreements have not achieved adequate results. The Report focuses on the situation in the Baltic Sea and provides an analysis of the legal enforceability and feasibility of market based instruments (MBI) for the reduction of SOX and NOX emissions. Finally the report makes an proposal on how to begin implementing MBI in the Baltic.