Estimation of changes in marine traffic flow due to installation of virtual buoys based on the OZT method

• Autorzy: Fukuda G. , Tamaru H. , Shoji R.

Identyfikatory

DOI

10.12716/1001.15.02.24

• Języki publikacji: EN

Abstrakty

EN

In this study, changes in maritime traffic flow due to the installation of virtual buoys were analysed from the perspective of collision, based on the obstacle zone by target (OZT) method. The existence of an OZT within ±2° in the bow direction is considered to be dangerous; all the OZTs that a vessel encountered at the time when this orientation prevailed were subjected to analysis. For the calculation of the OZT model, an SD3 model was used. The estimated OZT was used to calculate the OZT density, and the positions of the ships that were encountering the OZT were used for the analysis. It was found that the OZT density at the locations where collisions had occurred in the past was approximately 0.01 [times/km2]. After the installation of virtual buoys, most places around there were reduced to around approximately 0.005 [times/km2]. The results imply that the installation of virtual buoys has reduced the risk of collisions. In contrast, the OZT density in the southern region of Buoy 1 increased from approximately 0.005 [times/km2] to approximately 0.01 [times/km2], suggesting that a more detailed analysis of this area is required.

Słowa kluczowe

EN

virtual buoys; obstacle zone by target; risk of collisions; marine traffic

• Wydawca: Faculty of Navigation, Gdynia Maritime University
• Czasopismo: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
• Rocznik: 2021
• Tom: Vol. 15 No. 2
• Strony: 445--454
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Fukuda G.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Tamaru H.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

autor

Shoji R.

• Tokyo University of Marine Science and Technology, Tokyo, Japan

Bibliografia

• 1. Fukuda, G., Shoji, R.: Development of Analytical Method for Finding the High Risk Collision Areas. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation. 11, 3, 531– 536 (2017). https://doi.org/10.12716/1001.11.03.20.
• 2. Fukuda, G., Shoji, R.: Estimating Collision Course Area Using OZT in Offshore Refugee Outside the Port. The Journal of Japan Institute of Navigation. 135, 129–134 (2016). https://doi.org/10.9749/jin.135.129.
• 3. Fukuda, G., Takashima, K.: Analyzing the marine traffic condition for estimating the high risk areas in the emergency evacuation. In: 2015 International Association of Institutes of Navigation World Congress (IAIN). pp. 1–6 (2015). https://doi.org/10.1109/IAIN.2015.7352245.
• 4. Imazu, H.: Evaluation Method of Collision Risk by Using True Motion. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation. 11, 1, 65–70 (2017). https://doi.org/10.12716/1001.11.01.06.
• 5. Japan Coast Guard: Centralizing Marine Traffic Control in Tokyo Bay, https://www.kaiho.mlit.go.jp/e/Centralizing%20Marine %20Traffic%20Control%20in%20Tokyo%20Bay.html, last accessed 2021/03/11.
• 6. Japan Coast Guard: New Shipping Route Designation at Tokyo Bay Entrance, https://www.kaiho.mlit.go.jp/03kanku/ichigenka/pdf/ko kuji_e.pdf, last accessed 2021/03/11.
• 7. Japan Transport Safety Board: Ship Accident Investigation Report, https://www.mlit.go.jp/jtsb/ship/rep-acci/2016/MA20165-1_2014tk0009.pdf, last accessed 2021/03/12.
• 8. Japan Transport Safety Board: Ship Accident Investigation Report, https://www.mlit.go.jp/jtsb/ship/rep-acci/2015/MA20159-15_2014yh0087.pdf, last accessed 2021/03/12.
• 9. Marine Accident Inquiry and Safety Investigation Association: Cargo ship Kasho Maru cargo ship Blue Peak collision incident https://nippon.zaidan.info/seikabutsu/2002/00888/conten ts/0662.htm, last accessed 2021/03/12.
• 10. Marine Accident Inquiry and Safety Investigation Association: Cargo ship Tsugaru Maru cargo ship Eastern Challenger collision incident, https://maia.or.jp/wp-content/uploads/pdf/accidents/ ㉜ heisei%20zenki.pdf, last accessed 2021/03/12.
• 11. Marine Accident Inquiry and Safety Investigation Association: Collision of cargo ship Yongchai with cargo ship Toyo Maru No. 12, https://nippon.zaidan.info/seikabutsu/2002/00889/conten ts/0032.htm, last accessed 2021/03/12.
• 12. Nishizaki, C., Kayano, J., Shoji, R., Imazu, H.: Encounter Features of Collision Risk in the West Side Sea Area of Izu Oshima using OZT. The Journal of Japan Institute of Navigation. 139, 48–54 (2018). https://doi.org/10.9749/jin.139.48.
• 13. Tokyo Wan Association for Marine Safety: Study of marine traffic control measures in the waters at the mouth of Tokyo Bay in 2017, http://www.toukaibou.or.jp/img/file18.pdf, last accessed 2021/03/11.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).