This study was conducted to analyze the inception and current state of marina port development projects, identifying root causes of issues and proposing solutions accordingly. For this purpose, we conducted a literature review and in-depth interviews with experts to arrive at the following results. First, the primary issues with domestic marina port development projects were identified as project discontinuation, deficit operation, and deterioration of the project. Second, the causes of problems arising from the lack of business feasibility of domestic marina port development projects were found to be conflicts between interest groups, harmful effects of private investment methods, insufficient feasibility and eligibility studies, and disorganized laws and systems. Third, to address these fundamental problems, establishing cooperative governance and government-led industry development were suggested. Eventually, it was found fostering a government-led development environment and implementing cooperative governance are crucial for the success of marina port development projects.