Root cause model design

System dynamics can simultaneously reflect multi-physics, multi-scale, multi-interaction and multi-disciplinary in the model. The units of elements reflected in the model vary. Multi-physics includes ships, spare parts, mechanics, age of ships, and multi-scale includes manpower, number of ships, spare parts, mechanics, etc. If a more specific model is built, the types are more diverse. In this chapter, the root causes analyzed in Chapter 2 are implemented as a system dynamics model. Each root cause model is used as a module of the integrated model. Modules are linked according to causality.