judging from the pics, the problem was not in the sailing or the parking.

btw according to the news that yacht was worth $10 mil, not six.

Someone seem to have messed up their calculations. Here are more photos and a video:
http://www.easybranches.eu/european-news/1652747.html

youtube commenters say that yacht was loaded with luxuries on top and people took out some ballast, because yacht was to heavy for transport so probably they forgot to put it back inside before launch :)