A Study for a Design Method of Speed Control on One-way Passage

Abstract

Speed control of ships in a narrow waterway is a useful measure for improving safety of ships in narrow waterway. To ensure the effect of speed control, it is necessary to analyze the merit and the demerit of speed control from the viewpoint of objective assessment. However, there is no tool to establish a design method for speed control based on objective judgment. In this paper, a new marine traffic simulation program is developed. In this program, judgments for collision avoidance and movements of ships on a one-way passage are well considered to simulate actual situations in a narrow waterway. And, the Environmental Stress Model is introduced to evaluate difficulties of ship maneuvering of results of marine traffic simulation. Finally, the relationships among unacceptable ratios with speed control and the ratios without speed control are obtained. This design method will be a good solution for an administrator of a narrow waterway when he will consider that speed control should be set or not.