routes. The impact is therefore not considered to result in any discernible impact. These issues are considered further within Chapter 15 Shipping and Navigation.
14.6.1.5 Impact 5: Obstacles on the Sea Bed Post-Construction 273. Obstacles remaining on the sea bed post-construction could result in damage to, or complete loss of, fishing gears.
274. Offshore policy (IMO 1996) prohibits the discarding of objects or waste at sea. The reporting and recovery of any accidentally dropped object is also required.
275. Offshore works such as construction vessel anchoring, jack up legs or cable trenching could produce spoil or mounds onto which fishing gears could fasten.
276. As agreed for East Anglia ONE (draft DCO Schedule J, Part 2, 7 (15)), appropriate methods (e.g. trawl or drift net) would be deployed after the post-construction swath bathymetry survey to assess any sea bed obstructions resulting from the burial of the offshore cable corridor. Should the post-lay survey identify the presence of construction related sea bed obstacles such as mounds, boulders or berms that could have the potential to interfere with fishing, appropriate rectification measures would be undertaken. It is therefore considered that risk of obstacles on the sea bed will bewithin acceptable limits for commercial fishing activities.
14.6.1.6 Impact 6: Interference with Fishing Activities 277. The potential impacts discussed above could be considered to cause interference to fishing activities.
278. In the case of demersal static and drifting gears the propellers, rudders or towed survey equipment of construction and / or survey vessels have the potential to foul the dhan buoys and their attachment lines. A number of pre-construction surveys have been successfully completed for East Anglia ONE and East Anglia THREE. Appropriate liaison should ensure that there are no conflicts with static fishing gear.
279. It should also be recognised that in order to minimise gear losses, static gear fishermen already avoid deploying their gears in shipping routes and areas of high shipping activity. Transiting East Anglia THREE works vessels will also fully comply with the international regulations (International Regulations for Preventing Collisions at Sea (COLREGS)). This should negate the requirement for fishing vessels engaged in fishing to alter course or to pose any risk to fishing gears being towed. It is also of note that the commission Regulation (EEC) No. 365/2005 provides the surface marker buoy specifications required when outside of the 12nm limit to ensure static and passive fishing gear is visible for 2nm. The surface marker buoy specifications
Preliminary Environmental Information May 2014
East Anglia THREE Offshore Windfarm
Chapter 14 Commercial Fisheries Page 92
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