Amid a number of uncertainties of the future, such as climate change and international trade conflicts, as well as possible disagreements over policy implementation, there is a need for support tools to predict various conflict factors and improve the understanding and acceptance of policy alternatives among stakeholders. Under this circumstance, this research identified the current status and issues of the MSP (marine spatial planning) system to define the need and role of simulation technology for the development of an agent-based simulation that can pre-evaluate the impact and effect of ocean space policy at a micro-level. Through a technology trend analysis and a demand survey, this study identifies the applicability of agent-based modeling and its application areas (such as fisheries, economy, and environment) as well as technological requirements for the MSP system. The result of the MSP system review filled the gap in knowledge of how simulation technologies can meet the needs and roles within the MSP system by producing strategic information for planning. The role and development direction of the technology derived from this study provides a guideline for the practical design of an agent-based MSP simulation, such as the specific scope of application and components. Lastly, the research results led to the proposal of a development roadmap for MSP simulation and the establishment of a tangible utilization plan that can be efficiently implemented in MSP.