text: It is not just the coastline. A lot of the features are out as well. However, they aren't out by the same amount or in the same direction. I don't have a way forward on this unless somebody can tell us what to use as a definitive base.
  
  Just for info, Google's aerial imagery has a completely different alignment as it has been taken at a different angle from Bing's. What is required is a directly overhead aerial shot or a lot of GPS traces. I'll be there next year so will trace when I go but it will be a while.