During the past three decades, the Electronic Chart Display and Information System (ECDIS) evolved from its initial purpose to a complex navigation support tool. The transition from paper to electronic charts represents a substantial step in navigation, contributing to the reduction of the navigator’s workload, ease of execution of navigational tasks and integrated information and data fusion. In the system handling, Masters and Officers of the Watch (OOWs) are experiencing various issues ranging in their nature. The proposed paper represents a segment of a systematically carried out research among ECDIS stakeholders. The aim of the ECDIS EHO (Experience, Handling and Opinion) research is the development of an educational framework and the improvement of the Maritime Education and Training (MET) processes. This is to be achieved through a specific approach, proper communication and subtle educational, practical and research activities, that have developed through time and research segments accomplishment, always striving at the user-centred, often neglected, issues and their solving. The research methodology has been described in the respective chapter, together with the questionnaire which represents one of the main research tools. This segment of the research refers to opinions and attitudes of Masters and OOWs towards ECDIS mandatory implementation period completion, as collected from the ECDIS EHO questionnaire. The answers to the questions regarding the system role as a justified replacement of paper charts and the features of the means of navigation when compared to another have been categorized and discussed. Individual knowledge has been examined concerning new technology perception and understanding of the ECDIS system. The analyses and answers processing and accompanying comments have revealed certain illogicalities referring to the acceptance of the system as a mandatory, primary and often only, means of navigation. The level of acceptance and opinions regarding two means of navigation features have differed among respondents, irrespectively of their seagoing experience, navigational rank, ECDIS experience and the level of education. The analyses have revealed the need for the adaptation of ECDIS Education and Training to a particular navigational rank regarding engagement with the system. A new approach of the targeting methodology has been introduced and conducted. Critical groups of respondents have been identified and elaborated further. The research has resulted in the organization of a new ECDIS MET course at the Faculty of Maritime Studies of the University of Rijeka. Considering the obtained results and the ongoing system development, findings and solutions have been presented in the conclusion chapter, together with the means of their achievements and the further work.