Maritime transport is critical for global and Japanese transportation infrastructure, facing crew and driver limits. Although autonomous ships are expected as a solution to tackle these limitations, the enabling environment, such as regulations, governance, and social acceptance is essential for their implementation along with technology. Industrial roadmaps can guide the design of autonomous ships, aligning user needs with technology. This study proposes a multi-layered approach to clarify the relationship among industrial systems, navigation systems, and component system performance and to design the concept of autonomous vessels and industrial policies in an integrated manner. The industrial model explores the appropriate decision-making set for maritime stakeholders and presents possible introduction roadmaps. The navigation model evaluates the performance of subsystems to achieve safety goals. This comprehensive approach defines the necessary steps for technology realization and supports achieving broader social goals. Future work will focus on validating these models through interactive workshops with decision-makers and expanding simulation scenarios to enhance the realism and practicality of the simulations.