20-22 June 2018
Trieste (Italy)
Europe/Rome timezone

Fuzzy Analytical Hierarchical Process to Assess Weights of Importance in an Operative Risk Assessment

20 Jun 2018, 17:30
Saturnia (Trieste (Italy))


Trieste (Italy)

Stazione Marittima
Paper Safety and security Safety and Security


Mr Luca Braidotti (University of Trieste, University of Rijeka)


To evaluate the safety state of the ship in a generic operative or emergency condition is a very complex issue due to the huge number of attributes involved in the problem, uncertainties on their values and assessment of their mutual importance. The safety of the ship shall be presented in a simple and immediate manner in order to provide a useful decision support to onboard personnel. This is why, a hierarchical risk assessment procedure has been developed selecting a set of attributes which are grouped in criteria and sub-criteria. The attributes are fuzzified and combined in order to obtain a risk index for each sub-criterion and criterion. The mutual importance of criteria, sub-criteria and attributes is assessed by means of a fuzzy Analytical Hierarchical Process (AHP), which rationally incorporates and treats the experience of masters and officers collected by a survey. This process allows summarizing experience and proficiency into a decision support system devoted to increase ship safety, while providing an interesting representation of the onboard perception about risk and which are its main causes.

Primary authors

Prof. GIORGIO TRINCAS (UNIVERSITY OF TRIESTE) Prof. Jasna Prpić-Oršić (Faculty of Engineering, University of Rijeka) Mr Luca Braidotti (University of Trieste, University of Rijeka) Dr Marko Valcic (Faculty of Maritime Studies, University of Rijeka) Prof. Vittorio Bucci (University of Trieste)

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