INTELLIGENT MARINE TRAFFIC SIMULATOR FOR CON-GESTED WATERWAYSKazuhiko Hasegawa*, Go Tashiro**, Seiji Kiritani***,Koji Tachikawa***** Department of Naval Architecture and Ocean Engineering, Graduated School, OsakaUniversity, 2-1 Suita, Osaka, Japan, [email protected]ka-u.ac.jp** Communication Systems Business Division, Mitsubishi Electric Corporation, 1-1, Tuk-aguchihonmachi 8, Amagasaki, Hyogo, Japan*** Planning & Development Department, Horiba Corporation, 2 Miyanohigashicho,Kisshoin, Minami-Ku, Kyoto-city, Kyoto, Japan, [email protected]**** Control Systems Department, Hitachizosen Corporation, 7-89, Nanko Kita 1, Sumi-noe-Ku, Osaka, Japan, [email protected]Abstract.For the purpose of re-configuration or re-design of marine traffic system, intelli-gent marine traffic simulator was developed. This is a tool to evaluate marine traffic for anyconfiguration of sea area, lanes and traffic conditions.It includes the modeling of humanoperator, each vessel will automatically navigate according to her original mission as wellas collision avoidance manoeuvres, if necessary.It will be easily evaluated using this simu-lator how much degree the safety will change according to any change of traffic system,traffic quantity and quality, change of navigational area including addition of ports andcross-ocean bridges etc.The example was shown how traffic control will work in a speci-fied sea area.Marine ITS is a 5-years-project starting from 2000 in Japan.It will target thenew marine traffic system.Combining GPS(Global Positioning System), AIS(UniversalAutomatic Identification System) , satellite or mobile communication and Internet, a pro-posal of virtual radar system as a future marine traffic system was done.Key Words.Intelligent control,Automatic navigation system, Traffic simulation, Colli-sion avoidance, Traffic control, Modelling of human operator, AIS, GPS, ITS
1.INTRODUCTIONTraffic system simulation was mostly treated as aqueuing system and done discretely to solve variousproblems of logistics in the areas of scheduling, re-source utilization, capacity constraints and inventorymanagement. For safety evaluation or precise qualita-tive estimation, so-called micro or semi-micro simula-tion system is installed and some include even drivers’model as well as vehicle dynamics (Ludmann).In the case of marine traffic, problem is more sophisti-cated.There are, generally, no fixed lanes and trafficlights.Ships are not equipped with winkers nor abrake.There exists mixture of various vessels from theVLCC (Very Large Crude-oil Carrier) to a row boat.Sometimes, fishing vessels are just on the mission inthe sea.Most prosperous fishing area sometimes coin-cides with most vessels pass.It is just figurativelycompared as a combine and a three-wheeler crossingthe highway with brake-failed tank trucks. Thus sometragic casualties occur in the sea.Furthermore, if aVLCC collides with another vessel or is agrounded, oilspill suffers many fishing people, wild lives and the en-vironment.