Risk Analysis of Sea Traffic in the Area around Bornholm, 2008. - VTT

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Risk Analysis for Sea Traffic in the Area around Bornholm 18 arrival for all yachts arriving from outside the Schengen area. At the time of data collection, the “new” EU countries, such as Poland and the Baltic states, were not member of the Schengen group yet. Other ships Rønne port authority provided statistics about the date of arrival and the size of all vessels below 300 gross tons (AIS not compulsory) calling at their port. Nexø port authority provided statistics of the total gross tonnage that has been shipped through the port as well as the total number of visits. 4.3 Ship accident data Principally, accident rates are modelled by means of the collision and grounding models introduced in sections 4.5 and 4.6 below. However, it is helpful to compare with empirical ship accident data. These data have been collected in an applicable form during a relatively short period of time (10-15 years) compared to the observed accident rate (often less than one per year for major vessels in the area). Therefore, it is not possible to establish an empirical approach based on these scarce records. However, the accident data are useful when verifying the collision and grounding model described further below. Enlarged figure in Appendix D Figure 7 Ship accidents observed 1993-2006 Figure 7 gives a graphical presentation of the accident data obtained for DMA and Sjöfartsverket. Swedish data only include collisions and groundings. The data depicted is from the period 1993-2006 and only data for which a geo- P:\65775A\3_Pdoc\DOC\P-65775A main report final corr prepared for PDF.DOC .
Risk Analysis for Sea Traffic in the Area around Bornholm 19 graphical position is given is included in the figure. However, descriptions below include all accidents irrespective of whether precise location is specified. For further analysis only accident data collected from 1997 can be considered reliable. Data in DMAs accident statistics from 1993-1996 seems not to be complete, which has also been concluded in previous studies, and have not be included in the following. 4.3.1 Collisions In the area around Bornholm having interest for present study (largely 13°30' to 15°50' and 54°40' to 55°30') there has in a 10 year period (1997-2006) been 16 collisions registered by Danish authorities and 3 by Swedish authorities. One accident is covered by both sets of statistics resulting in 18 collisions in 10 years. Of these 18 collisions, 6 are for sure not of interest for this study, since these are collisions between vessels both under 300GT and this also seems to be the case for an other 5 collisions. Thus, 7 of the 18 collisions involve one or two vessels of 300GT or more. 5 of these 7 collisions involve fishing vessels, 1 is the severe collision between the bulk carrier Fu Shan Hai and the container ship Gdynia in 2003, which resulted in oil spill, and the last collision does not have sufficient description for further conclusions. 4.3.2 Groundings In the area around Bornholm having interest for present study (largely 13°30' to 15°50' and 54°40' to 55°30') there has in a 10 year period (1997-2006) been around 10 groundings registered by Danish authorities and 2 by Swedish authorities. However 5 of the 10 Danish registered groundings are grounding by fishing vessels below 300GT. Swedish authorities have registered 2 groundings in the area of interest, however, 1 of these is a small fishing vessel resulting in 1 grounding of interest west of Sandhammaren. In a 10 year period 6 relevant groundings have this been registered. 4.4 Geographic information Geographical information is obtained from Kort- & Matrikelstyrelsens “Levende Søkort” (“living sea map”) /KMS/. 4.5 Collision model The collision model describes the yearly rate of ship-ship collisions as well as the consequences of such events. A detailed description of the methods and assumptions is given in Appendix A. P:\65775A\3_Pdoc\DOC\P-65775A main report final corr prepared for PDF.DOC .
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Sejladssikkerheden omkring Bornholm
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