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Classification of Capsizing and Sinking Factors
pp.50-60
Systematical classification of accident factors is very important to take appropriate countermeasures to reduce accidents. The aim of this study is to classify capsizing and sinking factors so as to propose a checklist which could be used to analyze future accidents. The scope is investigation reports of capsizing and sinking accidents published by Japan Transport Safety Board between 2008 and March 2017. The investigation reports were surveyed in order to extract all factors involved in the accidents. Then the factors were categorized into eight classified factors according to their characteristics and a checklist for analyzing capsizing and sinking accidents was proposed. The checklist was applied to capsizing and sinking accidents surveyed in this study and it was revealed that refraining from “navigation in bad weather” is the most effective countermeasure for capsizing and sinking. It was also revealed that “flooding,” whose involvement was the highest for both capsizing and sinking, is the factor which needs countermeasures the most during navigation. It is concluded that accident analyses could be facilitated by applying the proposed checklist to future accidents.
2. Survey Method
3. Classification of Capsizing and Sinking Factors
3.1. Navigation in Bad Weather
3.2. Navigation in Danger Zone
3.3. External Force Other than Wind or Wave
3.4. Incapability of Maneuvering
3.5. Inappropriate Maneuvering
3.6. Embarkation/Movement of People and Cargo
3.7. Flooding
3.8. Excessive Heel Owing to Wind Pressure
4. Capsizing and Sinking Analysis Checklist
5. Capsizing Accident Analyses Using the Checklist
5.1. Analyses of Capsizing in Waves
5.2. Analyses of Capsizing in Calm Water
6. Sinking Accident Analyses Using the Checklist
6.1. Analyses of Sinking in Waves
6.2. Analyses of Sinking in Calm Water
7. Factors Which Need Countermeasures the Most
8. Conclusions
References
