This is a vast and exciting subject which has been gaining attention. It has a broad sweep as indicated by the diversity of research in the area. You may look up https://www.sciencedirect.com/topics/earth-and-planetary-sciences/marine-technology to gain an understanding of the range of subjects that you study. Many universities offer Masters but there are significant differences among them, which means that you need to explore many to find what suits you. You may look up https://www.masterstudies.com/MSc/Marine-Technology/ to examine the various combinations of subjects but with marine as the core. For instance, you may study an MSc in Marine and Maritime Intelligent Robotics at the University of Toulon. According to them, “The International Master in Marine and Maritime intelligent Robotics seeks to train a new generation of interdisciplinary professionals who are capable of combining Robotics and Artificial Intelligence in the context of advancing marine and maritime science and their technological applications” (https://www.masterstudies.com/MSc-in-Marine-and-Maritime-Intelligent-Robotics/Norway/Universit%C3%A9-de-Toulon/).
The National University of Singapore offers a MSc (Maritime Technology and Management) which “seeks to train and equip graduates with key skillsets to enable next-generation port capabilities in Singapore, such as industrial systems development, big data analytics tools, and emerging port technologies (e.g., digitalization to train workers). The MSc (MTM) alumni community will function as touchpoints which the Centre for Maritime Studies (CMS) and the Department of Industrial Systems Engineering and Management (ISEM) can capitalize for future collaboration between industry and research” (https://www.masterstudies.com/MSc-(Maritime-Technology-and-Management)/Singapore/National-University-of-Singapore/).
The Norwegian University of Science and Technology offers a Masters in Marine Engineering, describing it thus: “The Nordic Master in Maritime Engineering at Norwegian University of Science and Technology (NTNU) is based on the expertise of the participating universities within naval architecture, offshore engineering and maritime engineering” (https://www.mastersportal.com/studies/39583/maritime-engineering.html).
The World Maritime University in Sweden offers an MSc Programme in Maritime Affairs which “emphasizes the practical application of expertise. It offers both an overview of the complex, inter-related maritime and ocean fields, as well as the opportunity to specialize. The programme is designed to respond directly to the real needs of the maritime industry, and to equip graduates with the skills needed today and in the future. It is academically challenging and professionally oriented, and is designed for ambitious, mid-career maritime professionals. It provides a particularly strong foundation for those intending to move into either a national or an international career” (https://www.masterstudies.com/MSc-Programme-in-Maritime-Affairs/Sweden/WMU/).
Then there is the Master of Maritime and Air Transport Management (M.Sc.) from the University of Antwerp. “The main objective of the programme is to help executive staff members from transport-related companies and organisations (shipping companies, port authorities, terminal operators, airlines, airports etc.) to become top-notch executives and researchers in the field. It is specifically designed with an international audience in mind and aimed at individuals with a background in economics or management focusing on transport-related matters” (https://www.masterstudies.com/Master-of-Maritime-and-Air-Transport-Management-(M.Sc.)/Belgium/UAntwerp/)
The Erasmus Centre for Martitime Economics & Logistics offers an MSc in Maritime Economics & Logistics (MEL), which “reflects MEL’s holistic and integrated approach to addressing the complex interconnectedness of global maritime supply chains. In addition to the MEL courses, the programme places substantial emphasis on methodology and analytical skill development” (https://www.masterstudies.com/MSc-in-Maritime-Economics-and-Logistics-(MEL)/Netherlands/MELEC/).
The Ghent University Law School in Belgium offers an MS in Maritime Science, which “is an inter-university program developed by Ghent University (UGent) and the Vrije Universiteit Brussel (VUB). It aims at students from diverse academic backgrounds, who have a common passion for maritime transport and already hold a Master degree. People working in the maritime sector may also benefit from the program to enhance their knowledge and skills. The program comprises three main pillars: a technical/general pillar, an economic/logistic pillar, and a legal pillar, and follows the multidisciplinary approach which makes it unique in the global academic landscape” (https://www.masterstudies.com/Master-of-Science-in-Maritime-Science/Belgium/Law-UGent/).
The University of Quebec at Rimouski offers a slightly different Masters in Maritime Resources Management which “aims to train managers with a global, multidisciplinary and integrated vision of the maritime domain. It trains professionals who can use management methods, tools and techniques to effectively contribute to decision-making in the maritime sector, both at the operational and strategic levels.
The student has the opportunity to deepen his knowledge in one of the three sectors of the program: fisheries (fishing and aquaculture), management of the coastal and marine environment and maritime transport” (https://www.masterstudies.com/Masters-in-Maritime-Resources-Management/Canada/UQAR/).