My project aims to investigate policies and best practices for reducing ship emissions and the impact of low-emission areas, called emission control areas or ECAs, on emissions via operational and technical measures. Furthermore, during my research project, I examined the issues and solutions for reducing emissions from the shipping industry and compliance with ECA restrictions using abatement technologies inside and outside its territory. Ship owners should employ the available approaches, calculation techniques, and emission reduction strategies to comply with the ECA-specific emission reduction rules. The problem of ship emissions is recognised globally, and scientists and policymakers have continuously sought ways to mitigate its negative environmental impacts efficiently and cost-effectively.