抄録
Over the years, ClassNK has made extensive failure investigations and incorporated the results into the classification rules, and presented the information on failures to other concerned parties. The objective of the presenting this information is to share the knowledge between related parties in order to avoid the future failures, and this paper was prepared towards this aim. In this paper, case studies on propellers, crankshafts, main engine bearings and coupling bolts have been selected as a failure in marine propulsion systems. The case studies together with detailed information including the results of investigations and the cause of failure will be of interest to marine engineers and other concerned parties.
