Abstract
To ensure safety of Maritime Autonomous Surface Ships (MASS), the importance of risk assessment is emphasized in classification societies, but the assessment method is not specified, and standardization of the method is expected. In the risk analysis of conventional ship, we focus on equipment failure mainly on hardware, but in MASS, it is necessary to analyze not only hardware but also large-scale and complicated systems including software and human beings. STAMP / STPA is an analysis method for large-scale and complicated systems, and it may be applicable to MASS risk analysis. In this paper, we will verify the effectiveness of STAMP / STPA in the initial stage of MASS design and consider it from a certification point of view.
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