Journal cover Journal topic
Natural Hazards and Earth System Sciences An interactive open-access journal of the European Geosciences Union
Nat. Hazards Earth Syst. Sci., 17, 2041-2051, 2017
https://doi.org/10.5194/nhess-17-2041-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
28 Nov 2017
Global ship accidents and ocean swell-related sea states
Zhiwei Zhang1,2 and Xiao-Ming Li3,4 1East Sea Information Center, State Oceanic Administration, Shanghai, China
2College of Geography and Environment, Shandong Normal University, Jinan, China
3Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, China
4Hainan Key Laboratory of Earth Observation, Sanya, China
Abstract. With the increased frequency of shipping activities, navigation safety has become a major concern, especially when economic losses, human casualties and environmental issues are considered. As a contributing factor, the sea state plays a significant role in shipping safety. However, the types of dangerous sea states that trigger serious shipping accidents are not well understood. To address this issue, we analyzed the sea state characteristics during ship accidents that occurred in poor weather or heavy seas based on a 10-year ship accident dataset. Sea state parameters of a numerical wave model, i.e., significant wave height, mean wave period and mean wave direction, were analyzed for the selected ship accident cases. The results indicated that complex sea states with the co-occurrence of wind sea and swell conditions represent threats to sailing vessels, especially when these conditions include similar wave periods and oblique wave directions.

Citation: Zhang, Z. and Li, X.-M.: Global ship accidents and ocean swell-related sea states, Nat. Hazards Earth Syst. Sci., 17, 2041-2051, https://doi.org/10.5194/nhess-17-2041-2017, 2017.
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In this study, based on a 10-year ship accident dataset released by the International Maritime Organization, we analyzed the sea state characteristics during ship accidents that occurred in weather-related conditions. It is found that sea states of co-existed wind sea and swell, with close wave periods and oblique wave directions, represent threats to sailing vessels. We hope that these findings are valuable references to the study of shipping safety and also extreme wave mechanisms.
In this study, based on a 10-year ship accident dataset released by the International Maritime...
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