^^^^ Operators can be based on the analysis to understand the trend of
navigation ships in water bodies as an important reference.^^^^^^
From the results of the analysis, we constructed a representable
navigational information system.^^^^^ Different information was
unified on a Geographical Information System (GIS) in twoand
three-dimensional formats.^^^^^ The system was demonstrated
in a navigation simulation of a real voyage ship in Osaka Bay,
Japan.^^^^^ The integrated information can be comprehensively and
realistically interpreted by operators.^^^^ Therefore, the system is
expected to effectively avoid maritime disaster