Application of the Grey Clustering Evaluation Model in Risk Level Assessment of Merchant Ships

With the increasing numbers of merchant ships voyaging all over the world, a rise in maritime accidents emerges. As a consequence, it is necessary to assess the risk level of ships. In this article, a ship risk level assessment method is constructed, which is based on the grey clustering evaluation model. The major risk index is divided into three groups: ship/management, environment and crew. Meanwhile, the grey level of risk is low risk, moderate risk and high risk. The whitenization weight functions of different grey level are established by the grey clustering evaluation model. By using this model, the effectiveness of the method has been validated through practical cases.