Echo above. Don’t do anything without an attorney.
That said, this is all odd and doesn’t add up.
Who allows someone they aren’t very close with to borrow their 46’ boat
to sail many thousands of miles over open ocean for no compensation?
You likely aren’t going to see that yacht without extensive legal work
, and without being interviewed about your involvement, at the very least. I would be extremely surprised if you were not a suspect in the criminal investigation.
This is going to be extremely expensive, painful, and also potentially risky.