Currently 30% of the comments in this thread are you claiming that. Why are you so invested in this that you resort to spamming it all over? Someone else pointed out that this yacht traveled through germany and poland too. Nobody knows anything substantial, even if they did, we wouldn't be able to tell truth from fud.
You can easily sail from the other countries that have a baltic sea coast line though? It's not far. A small yacht can definitely do it.