Location


Geophysical survey dimensions and notes


485792mE 5837720mN (UTM31N)


Area


WA ID 71016: Unidentified, undated charted wreck (UKHO 11266) Dimensions: 23.3m x 8.5m x 4.5m


A very well preserved medium sized wreck remains in the northern section of Area THREE. The wreck has easily visible and distinguishable hull and deck superstructure discernible in the sidescan sonar data. These appear as linear and rectangular dark reflectors with shadows.. The southern edge of the deck is partially buried by the highly mobile fine sand sediments. The wreck itself and resultant sand banks have created a large and bright shadow in the sidescan sonar imagery. The dimensions are similar to previous recorded surveys, although more upstanding which could be due to further scour.


There is a large amount of scouring associated with this wreck particularly to the north of the remains with a scour mark measuring over 100m recorded. The southern area of the wreck has a build-up of sand waves. These mobile sands could potentially be covering associated wreck debris and cargo.


The wreck is clearly visible in the multibeam bathymetry data. This vessel has a large magnetic dipole anomaly associated with it measuring 96nT which suggests that it is likely of metal construction.


Build Type Loss


Construction Dimensions Shipyard Cause


Extent of Survival Unknown Depth Metal (Possibly)


Unknown Unknown Unknown


The wreck is recorded in the UKHO database as an unknown wreck, first detected in 1995 (SeaZone 11266). The wreck appears to be well preserved and intact lying upright on the seabed and orientated east to west. The wreck is associated was a small magnetic deflection and survey data indicates that the wreck is intact and upright with site dimensions of 20m x 5m x 3.1m a scour depth of 1.2m. This is recorded as a Live wreck.


2°40'0"E F 71016 2°50'0"E 3°0'0"E 0 1:500 Sidescan sonar image of wreck 23.3m x 8.5m x4.5m Multibeam bathymetry image looking northeast x1 vertical exaggeration 20m -45.60


Metres LAT (lowest


astronomical tide) -41.40


East Anglia THREE


F


Datum: WGS84 Projection: UTM31N


Legend


East Anglia THREE offshore windfarm East Anglia THREE Offshore Cable Corridor Wreck1


Notes: © ESRI 2°40'0"E 2°50'0"E


C B


Rev A


12/05/14 KL 22/04/14 KL


28/02/14 KL Date


Third issue


Second Issue First Issue


By Comment 1. Chapter 17, Table 17.15 and Appendix 17.3, Tables 1.2.1 and 1.2.2. 3°0'0"E


Original A3 Plot Scale


1:250,000 (map) © East Anglia Offshore Wind Limited 2014. 0 3 6km 0 2 4nm East Anglia Offshore Wind Unidentified charted wreck (UKHO 11273)


Date Rev


Drg No EA3-650-525W-019-C C


Layout


12/05/2014 N/A


Figure 17.19


Distance along profile Magnetic profile of wreck 96nT


52°30'0"N


52°40'0"N


Mag field (nT)


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