A not very helpful map here http://www.eastangliawind.com/location.aspx but it looks like any passage towards foreign shores from Lowestoft or Southwold will mean traversing the windfarm.
I wonder if the RYA will be as active on this one as the proposed windfarm off the Isle of Wight
Last week I read that the corridor through the London Array to allow yachts to navigate Foulger's Gat has shrunk to 1km from the previously agreed 1 mile.