2003 Volume 108 Pages 31-37
The significant feature of one-way through port is that turning manoeuvre is unnecessary either entering or leaving port. This can lead to the effective use of waters, the reduction of the number of tugboats and ship-handling difficulty. The harbour design in Japan has entered a stage of creating artificial features by the reclamation. The berth arrangement of harbours is changing from jetty-type to straight-line type. From such a standpoint, the authors have suggested the conversion of idea from the usual dead-end port to one-way through port. In the previous report, a series of ship-handling simulator experiments were conducted, and the advantage of one-way through port was verified from the viewpoint of reduction of manoeuvring difficulty. In the present paper, we took up the problem of the route crossing between navigation ships in passage routes and the entering/leaving ships, and conducted marine traffic simulation to examine the desirable entering way in one-way through port from the viewpoint of reduction of Environmental Stress for ship (ESs). The Environmental Stress Model was applied to evaluate the manoeuvring difficulties arising from various encounters with other ships in the process of entering/leaving port. For designing, managing and using one-way through port concretely, the conclusions obtained through this research gave us a guideline for the design of layout of route and berth in one-way through port, the settlement of design ship entering/leaving by one-way, and the management of the traffic density of passage routes.
