Analysing Navigators' Eye Movements by Utilizing Eye Mark Recorder on the Ship Handling Simulator

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Abstract

This study clarifies the results of eye movement (view points) of navigators by utilizing the Istanbul Technical University Maritime Faculty (ITUMF) Ship Handling Simulator (SHS). The main objective is to define view points of navigator on the bridge and is based upon their sea experience and educational level. Finally, to evaluate view points, fixation durations and changes in view points. A measurement device "Eye Mark Recorder, EMR-8" is used for recording the eye movements of subjects. The subjects are classified, according to their onboard experience level, into three groups. The same scenario, passing Istanbul Strait, was given to each subject on SHS. The general field was divided into three parts; "inside", "outside" and "others". The inside field has three components; instruments, indicator and engine telegraph. On the other hand, the outside field has three components; sea condition, navigational aids and target ships. "Others" means that all meaningless images and saccade of eye movements. Their view points and fixation durations are recorded by EMR-8 instrument, and then the data was analysed by using "Frame by Frame" method Results were obtained and also compared with differences among these groups. Group l's fixation duration on the meaningless places and also "others" is so much longer than other groups. They have little experience in using the inside equipment. There was a remarkably big difference of fixation duration between the inside and outside field. Group 2 has a tendency to behave as the professionals in the general field. But their interest to inside field is higher than third group's. Group 3 paid proper attention to all the navigational information, not only nautical instruments, but also target ships and navigational aids. Finally, the effect of sea experience and training level on navigator is evaluated by utilizing the eye movements while carrying out simulator experience.

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