This contributed book focuses on decarbonization of maritime transport by highlighting different aspects of decarbonization methods indicated in the International Maritime Organization’s Initial Greenhouse Gas Strategy (2018). The book contains studies on alternative fuels and alternative energy systems with their life cycle assessment, electrification and hybridization of ships, carbon capture technologies, green port concept, energy efficiency management, and market-based measures. This book will be of interest to those working in academia and industry in maritime technologies and transportation.