This outline offers a detailed examination of yachting, emphasizing its importance in tourism and the global and Greek yacht markets. It examines the classifications and advancements of yachts, focusing specifically on the mega-yacht sector and Greece's marina infrastructure. We examine the Greek Marina Association (EMAE), including its objectives, history, and a comparative analysis of its marinas based on capacity, infrastructure, and services. The study examines international marinas, analyzing best practices from Turkey, Italy, and Croatia, and proposes recommendations for development in Greece. We analyze the institutional framework for marinas in relation to international standards and propose strategies for advancing Greek marinas, highlighting investments, the roles of the public and private sectors, and economic advantages. The outline culminates in essential findings, evaluations of economic impact, and targeted recommendations to improve the competitiveness of Greek marinas.