The risk level of the Aids to Navigation (AtoNs) can reflect the ship navigation safety level in the
channel to some extent. In order to appreciate the risk level of the aids to navigation (AtoNs) in a navigation
channel and to provide some decision‐making suggestions for the AtoNs Maintenance and Management
Department, the risk assessment index system of the AtoNs was built considering the advanced experience of
IALA. Under the Formal Safety Assessment frame, taking the advantages of the fuzzy comprehensive
evaluation method, the fuzzy‐FSA model of risk assessment for aids to navigation was established. The model
was implemented for the assessment of aids to navigation in Shanghai area based on the aids to navigation
three‐dimensional simulation system. The real‐time data were extracted from the existing information system
of aids to navigation, and the real‐time risk assessment for aids to navigation of the chosen channel was
performed on platform of the three‐dimensional simulation system, with the risk assessment software.
Specifically, the deep‐water channel of the Yangtze River estuary was taken as an example to illustrate the
general assessment procedure. The method proposed presents practical significance and application prospect
on the maintenance and management of the aids to navigation.
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