Project: A2953 Client: East Anglia Offshore Wind Limited Title:


East Anglia THREE– Navigation Risk Assessment


www.anatec.com


Figure 25.2 Annual Passing Powered Allision Frequency (100% Fill Build Scenario)


372. The additional structures (accommodation platforms, HVAC collector substations, HVDC converters, meteorological masts and Lidar buoys), which were placed on the southern boundary of the East Anglia THREE site in order to create a worst case layout, represent approximately 27.1% of the total allision frequency for the partial fill build scenario. Therefore when these additional structures are excluded, the return period for the partial fill build scenario increases to one major allision every 46 years.


373. Similarly, the additional structures represent 41.6% of the total allision frequency for the 100% fill build scenario. When these additional structures are excluded, the return


Date: Doc:


07.05.2014 A2539 East Anglia THREE Windfarm Appendix 15.1 Page: 162


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