We analyze the elements determining the sustainability of nautical tourism in selected Mediterranean countries (Croatia, Slovenia, Greece, Italy and Turkey). The purpose of our research is to investigate the main obstacles to greater application of renewable energy sources (RES) as the basis for the sustainability of nautical tourism. The obtained results provide valuable information that can help companies and policy makers choose appropriate strategies to achieve the EU 2030 sustainability goals in this sector. Our survey among charter companies was conducted during 2018 on a sample of 51 respondents. We conclude that there is a serious lack of knowledge among nautical tourism respondents regarding the availability of financial instruments from EU funds intended for increasing energy efficiency and adoption of RES. Respondents were familiar with general measures to reduce energy costs but are not familiar with the measures and opportunities provided by available European funds. Our results confirm previous research indicating that significant savings in energy consumption can be achieved by using RES (especially photovoltaic (PV) modules) and that insufficient financial resources and lack of knowledge are the main obstacles to achieving higher adoption rates of RES and increasing energy efficiency in nautical tourism.

Summary: The paper includes the theoretical and empirical analysis of the elements that determine the motivation of employees in the charter companies of nautical tourism. The purpose of the research is to highlight the importance of

Even if creating jobs and fostering economic growth are two of the tourist industry's most important roles, preserving its sustainability is a big issue on a global scale. Our research aims to provide a bibliometric analysis of the relevant literature used in the VOSviewer software's examination of the sustainability of the industry. The goal is to evaluate the current status of research on environmental aspects of sustainable tourism development and to pinpoint the key areas, journals, articles, and authors from 1996 to 2021. A total of 337 relevant papers on subjects like the utilization of renewable energy sources, energy efficiency, energy indicators, and sustainability in the tourism industry were analysed in the Scopus database, based on their authors, publication year, geographic location, and number of citations. This study provides helpful information to promote theoretical and practical research in this area by adopting a systematic and visual review of all studies pertinent to the development of sustainable tourism.