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Assessing Grounding Frequency using Ship Traffic and Waterway Complexity

Published online by Cambridge University Press:  07 August 2014

Arsham Mazaheri*
Affiliation:
(Aalto University, School of Engineering, Department of Applied Mechanics, Marine Technology, P.O. Box 12200, FI-00076 AALTO, Espoo, Finland)
Jakub Montewka
Affiliation:
(Aalto University, School of Engineering, Department of Applied Mechanics, Marine Technology, P.O. Box 12200, FI-00076 AALTO, Espoo, Finland)
Pentti Kotilainen
Affiliation:
(Aalto University, School of Engineering, Department of Applied Mechanics, Marine Technology, P.O. Box 12200, FI-00076 AALTO, Espoo, Finland)
Otto-Ville Edvard Sormunen
Affiliation:
(Aalto University, School of Engineering, Department of Applied Mechanics, Marine Technology, P.O. Box 12200, FI-00076 AALTO, Espoo, Finland)
Pentti Kujala
Affiliation:
(Aalto University, School of Engineering, Department of Applied Mechanics, Marine Technology, P.O. Box 12200, FI-00076 AALTO, Espoo, Finland)

Abstract

Ship traffic is the factor that presents in almost all of the existing grounding risk models. It is considered to be one of the main factors affecting the expected frequency of ship groundings. This is mostly accepted by experts as common sense. However, there is no research available on the actual dependency between ship traffic and grounding accidents. In this paper, we conduct a study aimed at determining the statistical dependency between the density and distribution of traffic, the number and frequency of grounding accidents and the dependency between the complexity of waterways and an actual accident. For this purpose we utilise statistical analysis of maritime traffic, obtained from Automatic Identification System (AIS) data and grounding accidents, enhanced with the expert elicitation techniques delivering the waterway complexity index. The sea area under investigation is the Gulf of Finland. The results show statistical dependency between frequency of grounding and waterway complexity as well as the traffic distribution. However, the study does not reveal any significant dependency between grounding and traffic density.

Type
Research Article
Copyright
Copyright © The Royal Institute of Navigation 2014 

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