Doctoral dissertation on the use of AIS-data for vessel collision risk analysis

Mr. Lei Du defended his doctoral dissertation on 1 October 2021 at Aalto University, in the field of marine technology. The opponent was Associate Professor Rafał Szłapczyński from the Gdansk University of Technology, Poland. Assistant professor Osiris Valdez Banda – a member of the Kotka Maritime Research Centre’s management group – was the supervisor of the doctoral thesis.

The thesis, titled as Maritime Traffic Risk Analysis in the Northern Baltic Sea from AIS data, consists of five scientific articles and a summary section. It reviews and develops framework and methodology of maritime traffic risk analysis to support decision-making for the prevention of and response to accidents, particularly ship collisions.

The focus of the thesis is in advancing the latest methodology of utilizing non-accident critical events, in other words near misses, detected from AIS data, as the basis to risk assessments. AIS refers to Automatic Identification Systems tracking the ship movements, being commonly used by vessel traffic service (VTS) centres worldwide.

”Through this work, we can identify the waters where dangerous encounters happened frequently and provide evidence for the identified causes of serious ship encounters,” Mr. Du says.

He continues by telling the results can help developing preventive measures to reduce the ship collision probability, or to minimize the negative consequences of ship collisions by allocating more reponse resources to the most risky areas. The expected end-users of the results include the authorities responsible for maritime traffic planning and management, as well as pollution prevention and response agencies.

The thesis summary can be downloaded from the Aaltodoc publication archive.