Construction of Navigation Risk Evaluation Indicator System for Intelligent Vessels Based on STPA Approach
Aiming at the problem of identifying the risk causes of navigation safety of intelligent ships,based on the STAMP theory,an intelligent ship system model is constructed based on the functional substitution of the crew.Regarding the navigation risk of the ship as a systematic safety control problem,the risk-causing factors are analyzed by applying the STPA method,and then an evaluation index system for the navigation risk of the in-telligent ship in constructed on the basis of the three dimensions of the component failures,the interference of the external environment and the insecure interactions.The index system covers a wide range of elements and strong-ly targets risks,which can scientifically and objectively characterize the safety status of the ship navigation sys-tem,and the relevant results have laid a foundation for the subsequent quantitative assessment of the navigation risk of intelligent ships.