RIASSUNTO
ABSTRACT:
Most marine accidents related to vessels are the results of human error, such as mis-detection, mis-judgment and mis-operation. A particular example is the frequent collisions that occur between fishing vessels and cargo vessels in the waters off Japan that often result in the loss of life. In this context, the safety assessment for this type of marine accident is carried out in accordance with Formal Safety Assessment (FSA) approved by IMO in 2002 using the following steps; 1) Identification of hazards by Variation Tree Analysis, 2) Construction of Marine Casualty Database, 3) Collision Course Analysis, 4) Risk Assessment by Event Tree Analysis, 5) Estimation of probabilities of collisions based on ship traffic data and 6) Evaluation of Risk Control Options with Contingent Valuation Method.
INTRODUCTION
Most marine accidents related to vessels are the result of human error, such as mis-detection, mis-judgment and mis-operation in the use of functional systems contribute to safe navigation. In recent years, collisions involving fishing vessels and cargo vessels have increased in the seas close to Japan, and have been reported widely in the media. An example was the collision between a fishing vessel and a state-ofthe- art Aegis destroyer that occured in February 2008 and which was reported sensationally in the media, gaining the attention of the public. The annual report released by the Marine Accident Inquiry Agency shows that collisions are the most common (25%) of all marine casualties, figure much higher than grounding, capsizing, flooding, fire and incidents. The report also shows that the ratio involving fishing vessels is the highest (32%) of all of vessel types. Due to their high ratio of occurrence and the level of damage that results collisions between fishing vessels and the larger merchant cargo vessels which are the subject of research reported in this paper.