A comparison of two definitions of ship domain for analysing near ship–ship collisions

Hörteborn, Axel,1986SSPA Sweden AB,Chalmers tekniska högskola,Chalmers University of Technology (author)

This paper compares two definitions of ship domain (SD) for analysing near ship–ship collisions in order to assess the risk of such events. One of the SDs follows Fujii’s definition, which is based on a ship’s dimensions, whereas the other was calculated with data from the Automatic Information System (AIS) in selected traffic locations. Case study simulations of traffic situations at three ship crossing locations were conducted using a Vessel Conflict Ranking Operator model, the results of which were examined according to the two definitions and their suitability for analysing near ship–ship collisions. The SD defined according with AIS data identified more cases with low angles of intersection as near-misses than the SD based on Fujii, which identified more situations with larger angles and higher speeds. IWRAP calculations are presented for the three locations to illustrate the probability of ship–ship collisions.

Ringsberg, Jonas,1971Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jwri (author)
Svanberg, MartinSSPA Sweden AB (author)
SSPA Sweden ABChalmers tekniska högskola (creator_code:org_t)

In:Proceedings of The 8th International Conference on Collision and Grounding of Ships (ICCGS8) - Developments in the Collision and Grounding of Ships and Offshore Structures2019, s. 308-316

By the author/editor: Hörteborn, Axel, ...; Ringsberg, Jonas ...; Svanberg, Martin

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