Reliability assessment method of residual strength of damaged warships

In order to assess the residual strength of damaged warships reasonably,based on the reliability method,a method for analyzing the damaged warship’s residual strength is presented by considering the un-certainties of residual capability and loads.A warship is taken as an example to compute its residual strength by using this method and the certainty method recommend by LR naval ship rules.The conclusions of reli-ability assessment are quite tally with the results of the certainty method.Moreover,the reliability method presented in this paper can reflect the residual condition of damaged warship more clearly through calcu-lating its failure probability and this method makes quantitative analysis about the effects of sea conditions,damaged degree,sea direction and ship speed,etc.At the same time,the sizes of broken holes which may evidently affect the residual strength are investigated.