Children are not the property of their parents. They do not have absolute rights over them, nor should they. They are entrusted to look after their best interests and to keep them safe above all else. Parental rights are not limitless in any society that I am aware of although I'm sure there are exceptions. We don't let kids smoke or drink alcohol legally despite what parents have to say. Even in the US, are parental rights limited when such questions arise. I would propose that sailing solo around the world is likely more hazardous to the health, or at least potentially so, than either smoking or drinking. When it looks like parents may not be fulfilling their obligations to the child to keep them safe, I think that is perfectly within the rights of the state to intervene. In this case the Dutch court has not said "no", they have said "whoa...lets take a step back and review the situation". They are acting more as advocates for a child that may not have the maturity or judgement to advocate for herself..or maybe she does, that is what the court is trying to determine. It would be difficult to advocate once this girl is already alone on the high seas.
Somebody else brought up another good point, the seas are only one danger, what about the ports that this girl will visit? How safe are they?
It seems to me as well that there are definite cultural views that color how one views this situation. Americans as a whole seem to be a lot more sensitive to governments infringing on what they perceive as rights and freedoms. That is not intended as a criticism , just an observation. Those of us that live in "socialist" countries like Canada
seem much more willing to accept limits to certain freedoms if it is for the perceived "greater good". Gun control is one example of that (not to open another debate).
Just my $0.02...its worth what you paid for it
Respect to all....