Abstract
To keep navigation of large high speed vessel safe, effect of navigation aids were examined using simulator experiments. We asked expert ship operators to maneuver the simulator and answer questionnaire to evaluate the effect subjectively. The answers were analyzed by applying PCA (Principal Component Analysis). The following things are cleared. PCA is useful to analyze the operators' subjective evaluation of the effect on navigation aids. As a result of PCA, ARPA, RADAR (indication rate is 3 second) and decision-making support are particularly effective among navigation aids and support. Then, in night navigation, the operators are influenced by the aids and support more than condition of sea area. On the other hand, the operators are deeply influenced by sea condition rather than navigation support in day navigation.
