Risk-based maintenance (RBM) means that maintenance will be done according to the risk evaluation result, which is calculated by the probability of failure and the consequence analysis. RBM is often applied to some plants (oil refining plant, chemical plant etc...), but still few applied to vessels. IMC developed the RBM software for vessels in order to apply RBM to ship management, but the RBM calculation method and result is not enough to be verified. Therefore, we apply RBM to Hiroshima-Maru, and improve the RBM calculation method and result. In the future, we aim at the practical use of the RBM for vessels.
