A Study on Monitoring and Supervision of Ship Nitrogen-Oxide Emissions and Fuel-Sulfur-Content Compliance

Regulations for the control of air-pollutant emissions from ships within pollutant emission areas (ECAs) have been issued several years, but lack practical technologies and fundamental theory in implementation process remains a challenge. In this study, we designed model to calculate nitrogen-oxide-emission intensity sulfur content ship fuels using theoretical deduction law conservation mass. The reliability availability derived results were empirically evaluated measurement data NOx, SO2, CO2 exhaust gas demonstration practice. By examining measured or registered fuel-oil-consumption rates ships, compliance-determination workflow NOx-emission fuel-sulfur-content monitoring supervision on-voyage proposed. showed that fuel’s can be by exhaust-gas composition online used assist maritime ships. It is recommended uncertainties regarding should considered 15% during supervision. established monitoring. Meanwhile, all related governments industry-management departments are advised actively lead development technology ship-air-pollutant ECAs, as well strengthening quality management ships’ static data.