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


Navigation Risk Assessment – East Anglia THREE Offshore Windfarm


www.anatec.com


Figure 18.21 Routes 6 and 7 Traffic (40 Days) ............................................................... 120 Figure 18.22 Route 6 and 7 (including subdivisions) Vessel Type Distribution ............ 121 Figure 19.1 Anticipated 90% Shipping Lanes- Post Construction of the Proposed East Anglia THREE Project (Partial Fill) ...................................................................................... 124 Figure 19.2 Anticipated 90% Shipping Lanes- Post Construction of the Proposed East Anglia THREE Project (100% Fill) ....................................................................................... 125 Figure 19.3 10 days of Simulated AIS Data (Partial Fill) ................................................. 126 Figure 19.4 10 days of Simulated AIS Data (100% Fill) .................................................. 127 Figure 20.1 Offshore Cable Corridor AIS Tracks by Type (20 days May – August 2013) 130


Figure 20.2 Offshore Cable Corridor Vessel Type Distribution (20 Days May- August 2013)


131


Figure 20.3 Cargo Vessels Recorded within 5nm of Cable Corridor (20 Days)............... 132 Figure 20.4 Passenger Vessels Recorded within 5nm of Cable Corridor (20 Days) ........ 133 Figure 20.5 Other Operational Vessels within 5nm of Cable Corridor (20 Days) ............ 134 Figure 20.6 Offshore Cable Corridor Vessel Draught Distribution (20 days May – August 2013)


Figure 20.7 Offshore Cable Corridor Vessel Length Distribution (20 days May – August 2013)


135 135


Figure 20.8 Anchored Vessels within 5nm of Offshore Cable Corridor (20 days May – August 2013) 137 Figure 20.9 Daily Count and Vessel Type Distribution of Anchored Vessels (20 days May – August 2013) ....................................................................................................................... 138 Figure 21.1 SAR Helicopter Bases relative to the East Anglia THREE Site .................... 142 Figure 21.2 RNLI Bases relative to the East Anglia THREE site ..................................... 144 Figure 22.1 East Anglia THREE Hazard Ranking Results ............................................... 150 Figure 24.1 Vessel Encounters Density ............................................................................ 153 Figure 24.2 Encounters per day within 10nm of the East Anglia THREE Site ................ 154 Figure 24.3 Encounter Vessel Type Distribution .............................................................. 155 Figure 24.4 Overview of 1nm encounters during 40 days (AIS & Radar) ....................... 156 Figure 24.5 Vessel-to-Vessel Collision Study Area .......................................................... 157 Figure 24.6 Base Case Vessel-to-Vessel Collision Risk ................................................... 158 Figure 25.1 Annual Passing Powered Allision Frequency (Partial Fill Build Scenario) .. 161 Figure 25.2 Annual Passing Powered Allision Frequency (100% Fill Build Scenario) ... 162 Figure 26.1 Summary of Change in Annual Collision and Allision Risk Result .............. 168 Figure 27.1 Partial Fill Layout and Indicative Radar Buffer Zones ........................... 173 Figure 27.2 100% Fill Layout and Indicative Radar Buffer Zones ................................... 174 Figure 28.1 Anticipated Routeing for Route 16 Post Cumulative Scenario ..................... 187 Figure 28.2 Anticipated Routeing for Route 19 - Cumulative Scenario ........................... 189 Figure 28.3 Anticipated Routeing for Route 21 - Cumulative Scenario ........................... 191 Figure 28.4 Annual Passing Powered Allision Frequency (Partial Fill – Cumulative) .... 194 Figure 28.5 Annual Passing Powered Allision Frequency (100% Fill – Cumulative)...... 195


TABLE OF TABLES


Date: Doc:


07.05.2014 A2953 East Anglia THREE NRA Appendix 15.1


Page:


viii


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