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2023 Journal Impact Factor - 0.7
2023 CiteScore - 1.4
ISSN 2083-6473
ISSN 2083-6481 (electronic version)
Editor-in-Chief
Associate Editor
Prof. Tomasz Neumann
Published by
TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
e-mail transnav@umg.edu.pl
Evaluation Method of Collision Risk by Using True Motion
1 Tokyo University of Marine Science and Technology, Tokyo, Japan
ABSTRACT: It is necessary to develop a useful application to use big data like as AIS for safety and efficiency of ship operation. AIS is very useful system to collect targets information, but this information is not effective use yet. The evaluation method of collision risk is one of the cause disturb. Usually the collision risk of ship is evaluated by the value of the Closest Point of Approach (CPA) which is related to a relative motion. So, it becomes difficult to find out a safety pass in a congested water. Here, Line of Predicted Collision (LOPC) and Obstacle Zone by Target (OZT) for evaluation of collision risk are introduced, these values are related to a true motion and it became visible of dangerous place, so it will make easy to find out a safety pass in a congested water.
KEYWORDS: Automatic Identification System (AIS), ARPA, Collision Risk, Ships Manoeuvering, True Motion, Closest Point of Approach (CPA), Line of Predicted Collision (LOPC), Obstacle Zone by Target (OZT)
REFERENCES
Imazu, H. and Koyama, T. 1999. Study on Near Misses Under Ship’s Operation, The Journal of Japan Institute of Navigation, Vol.100, pp.67-73.
Imazu, H. 2013. Line of Predicted Collision and Collision Risk, Navigation of Japan Institute of Navigation, Vol.186, pp. 41-44.
Imazu, H., Fukuto, J. and Numano, M. 2002. Obstacle Zone by Target and its Expression, The Journal of Japan Institute of Navigation, Vol. 107, pp191-197.
Imazu, H. 2005. Integrated Navigational Information System on Seascape Image, The Conference NAV05 of Royal Institute of Navigation, Session E.
Imazu, H. 2014. Computation of OZT by using Collision Course, Navigation of Japan Institute of Navigation, Vol.188, pp78-81.
Citation note:
Imazu H.: Evaluation Method of Collision Risk by Using True Motion. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 11, No. 1, doi:10.12716/1001.11.01.06, pp. 65-70, 2017
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