Research on Relationship between Residual Environmental Stress and Latent Environmental Stress II : On the Relationship in Crossing Traffic

Abstract

In a navigation system, which consists of linked relationships in a 'ship-human-environment', to assess the safety of marine traffic, it is needed to evaluate latent environmental stress, stress absorption value and residual environmental stress. By employing real time ship-handling simulator to evaluate residual environmental stress, due to the small sample size, the universality of the evaluation result is not so good. Therefore, in order to develop a methodology to estimate residual environmental stress from latent environmental stress, which can be easily evaluated, the authors have carried out a series of research on the relationship between the latent environmental stress and residual environmental stress. In the present paper, as the second report of this research, by employing marine traffic simulation technique, an investigation into the relationship between residual and latent environmental stress in crossing traffic is carried out. Based upon the result of the investigation, an estimation formula of stress absorption ratio is also given. In a given condition, by using the stress absorption ratio, the residual environmental stress can be estimated from latent environmental stress.