In the last 15 years, the number of vessels in the world fleet has grown by around 53% and their gross tonnage has in- creased by 47%, with a consequent significant increment of marine accidents worldwide. Accident database are the basic resource for risk assessment methods to help decision-makers to enact strategies and un- dergo hazard and vulnerability mitigation measures. Under- standing ship accidents distribution in terms of involved GT, typical age of the affected vessels, category of the ships, as well as distribution of underlying causes and consequences is the first necessary step to improve accident mitigation ac- tions to be implemented for future assessments. In the present work, the results of an analysis on a database of vessel accidents in Mediterranean and worldwide port ar- eas developed within the framework of the project ISY PORT (Integrated SYstem for navigation risk mitigation in PORTs) is herein presented. The distribution of accidents was ana- lyzed in terms of relevant vessel characteristics i.e. Grosse Tonnage (GT), age at the time of the accident, ship’s cate- gory, causality event, weather conditions and number of fa- talities/injuries/lost at sea. The database can be used as a basis for maritime risk assessment methods and for calibra- tion of real-time ship collision avoidance scenarios.
