I beg to differ.
The OP makes the statement:
"I tell this story publicly (and I have loads of supporting evidence to back it up, I would not name him and his boat otherwise) partly to warn the sailing community about this dangerous man"
I'm inclined to take the OP at their word and feel that in risking the retaliation of the alleged perpetrator the OP acted responsibly and performed a significant public service
and that in censoring out the information require for members of the cruising public to identify and avoid harm from the alleged perpetrator CF has demonstrated a pusillanimous disregard for the welfare of participants in the forum.