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anomaly is visible as a rectangular, hard edged dark reflector with short but bright shadow and looks anomalous to the surrounding seabed. There is a small amount of sediment build up and scouring associated with this anomaly.


80.


76016 is the largest recorded dark reflector in the East Anglia THREE site and has dimensions of 8.9m length, 1.4m width and 0.5m height. This is identified as a hard edged, irregular shaped linear anomaly with a very small and faint shadow. This is located in the south western extent of the survey area on a very sandy and fairly even part of the seabed.


1.2.15 Ropes & Chains 81.


There are 7 anomalies identified to be possible rope/chain remains within the East Anglia THREE site (see Appendix 17.3). The smallest of these is 76061 which is visible as a discreet, bundled up possible rope/chain remain located in the central western extent of the survey area. This is a diffuse and thin, curvilinear dark reflector with shadow, which is isolated on an area of the seabed with frequent sand waves. The anomaly has dimensions of 4.6m length, 2m width and a height of 0.3m. A lack of associated magnetic anomaly would suggest that this is a rope rather than chain remains.


82.


The largest rope/chain remains recorded are 76107 with dimensions of 102.5m length, 1m width and 0.3m height. This is a broken up or partially buried long linear anomaly composed of hard edged and diffuse dark reflectors with shadows and orientated north-south. These remains also have a small magnetic fluctuation grouped with them measuring 14nT and indicate ferrous material is present. It is possible that this is the remains of decommissioned cable in the region.


83.


Rope/chain remains 76041 and 76062 both have magnetic anomalies grouped with them. 76041 has dimensions of 55.8m length, a maximum width of 1.1m and no measurable height. The anomaly is a thick but diffuse looking dark reflector, orientated north-south and spread across large sand waves of varying height. The full extent and parts of this anomaly may be covered by mobile sand sediments. There is a medium sized magnetic value of 31nT associated with this remain suggesting ferrous material is present. It is possible that this is the remains of decommissioned cable in the region.


84.


76062 is located on a rough and uneven part of the seabed and is classified as rope/chain debris visible as a diffuse dark reflector with a small shadow. The linear anomaly has one hooked end visible and is orientated north-south with dimensions of 27.1m length, 0.4m width and 0.1m height. An irregular shaped medium sized


Preliminary Environmental Information May 2014 East Anglia THREE Offshore Windfarm Appendix 17.2 Archaeological Review of


Geophysical and Geotechnical Data: Technical Report


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