The motivation is to tackle the harmful effects on health and climate. The focus is on black carbon emissions but the impact on other emissions as well as on fuel consumption is also covered. The project will contribute to IMO's and regional efforts in regulating ship emissions and provide valuable insights for the maritime industry to adopt cleaner practices. It involves 1) development of parallel real sailing fuel consumption and emission monitoring methods, 2) full-scale testing of biofuel and other innovative and energy efficient initiatives, 3) value creation through data collection – resulting in formulation of best-practice and future recommendations for shipowners and regulators.