Over the last decade, it has shown a significant increase in enlargement of ship size, reducing the unit cost of freight transport for economies of scale by ship owners. These large vessels are coming alongside the pier of each harbour on excess of berthing capacity. Nevertheless, port authorities has not suggested a criteria to limit vessels exceeding berth capacity because of the enhancement of port performance and the development of local port.
The purpose of this paper is to improve the safety of pilotage by establishing the criteria of vessels exceeding berth capacity. And also we need to clarify safety standards and measures of port berthing capacity.
To achieve this purpose, this paper identified specific examples of measures of berth capacity and proposed the units of berthing capacity by types of vessel for harbour safety.
Secondly, to raise the pilotage safety in harbour, five elements for standards of berth capacity - ship's length, draft, tonnage, breadth, freeboard - were adopted by five special groups divided from the point of view of port users. Moreover, relative importance(priority) of these was also checked by AHP(Analytic Hierarchy Process).
In conclusion, it follow that the enlargement of ship size and increase of the incoming vessels more than berthing capacity hinder the safeness of pilotage. Thus, this paper hypothesized that if port authorities set up the proper limit of port berthing capacity, the pilotage safety will be improved sustainedly. Furthermore, this paper proved the hypothesis through Chi-squared test. As a result, there was no difference between five groups in the hypothesis.