Basic Study on Analyzing of Maneuvering for Avoiding Collision in the Congested Sea Area where Many Ships are Crossing by Using OZT

Maritime training facilities have recently introduced practical training that involves maneuvering simulators. The simulator helps the trainees realize so-called gSeamanshiph which cannot be obtained only by the classroom lectures. However, it is very difficult to judge the trainees' skills through their maneuvering on the simulator because the simulators cannot clearly demonstrate the existence of the potential collision risks. If instructors could present the cause of the risks concretely and visually, the trainees would then be able to acquire the ability to maneuver to avoid collision more effectively. Therefore, in this study, it is considered to use OZT when analyze the results of simulation. OZT is an abbreviation for gobstacle zone by targeth. This paper shows the details of this consideration.