The act on Partial Revision of the Act on Port Regulations and the Maritime Traffic Safety Act was enforced on July 2010. It follows on this law, a vessel shall not overtake other vessels in the designated section of the Kurushima Traffic Route. And when current is adverse, a vessel shall navigate with a log speed of 4 knots and upwards. However, the congestion has occurred within the traffic route by no passing. This situation has given to navigation officer load, and the dangerous situation has occurred.
How to solve this problem, the marine traffic control according to a situation is required. That is, passing of small vessel is made possible.
Then, the questionnaire was carried out about the distance which navigation officer needs within the traffic route. From the result of the questionnaire, it was defined as Limit of Distance. And the new navigation control method was proposed.
This research considered the safety navigation within the traffic route for a small vessel.
