Pollutant emissions produced by the global merchant fleet has always been suggested to represent a considerable contribution to anthropogenic emissions, with nitrogen and sulfur compounds being currently in the focus of public's interest. Emissions such as nitrogen oxides, NOx (the sum of NO and NO2) lead to enhanced tropospheric ozone formation over their natural background level and thus affect the greenhouse warming. A considerable portion of ship emissions is released far off the continents — in clean areas of the atmosphere. This particularly effects the southern hemisphere with its natural low emission level. So far, all earlier…