This final paper examines the development of marinas and nautical tourism, with a special focus on innovations related to sustainable development. Marinas, as the most complex nautical ports, play a major role in the development of the economy of maritime countries. They are one of the most important economic starters in the area in which they are located, and bear great responsibility for social profit and environmental sustainability. For this reason, there is a need for innovations and the creation of new management systems that ensure that the development of the marina is constant and adapted to today's technological progress. Also, one of the most important problems in the development of marinas and beaches is the concern for the environment and maintaining the cleanliness of the sea and environment. Waste is thrown into the sea every day and thus pollutes the marine flora and fauna. Therefore, the paper describes solutions that seek to solve the problems of sustainable development, while citing new technologies that enable the establishment of the ecological sustainability of the marine ecosystem, that is, the sustainability of nautical tourism.