I'm all caught up in the amazing Google Earth software. In searching the world for catamarans sitting out in view, I looked for Wouter's yellow boat, "Big Bird". Most of the Netherland coast is in low resolution but due west of Amsterdam and just south of Zandvoort I found this view.

Since the photos were taken from overhead the vertical nature of masts and sails is lost. However, most photos are taken in the morning so if you look for shadows you see an image of the height. Look on the beach and you'll see what might be a cat but the shadow definitely looks like a mainsail (maybe). This photo is posted very low res and not zoomed in.

Get the free software and go to 52.21.54 N 4.31.09 E