Environmental sustainability has become a significant policy concern in global maritime transport in recent years. To achieve high energy efficiency and low emissions, the all-electric ship (AES) integrated with an energy storage system (ESS) is believed to be one of the most promising technologies for complying with environmental regulations. The traditional rule-based power management system (PMS) I would like to thank my co-supervisor, Prof. Tegoeh Tjahjowidodo from Katholieke Universiteit Leuven, Belgium and Prof. Michael Lau from Newcastle University in Singapore. Thank you so much for extending my knowledge and broadening my horizons. Thanks for your patient support and brought my work to a higher level.I would like to acknowledge my industrial supervisors Dr Alf Kåre Ådnanes, Dr Ricky R. Chan and Dr Ahmed Abdelhakim. Thank you for sharing your valuable experiences and guidance throughout my studies. You have provided me with so many important tools, data and industry information that I needed to choose the right direction of this research project.Furthermore, I would like to thank my colleague Dr Liza Chua Wan Yuan, who built a solid foundation for the related work and helped me to understand the background of this study better and faster.Last but not least, I would like to thank my family. Thanks to my parents, who have supported me a lot in daily life. Thanks to my husband Bao Yiming and two lovely girls: Ariel and Alita. You are my motivation to continue this tough journey and never give up. You are the mirror to remind me always to be a better person.