You stated in your post that he shot your sails ? So there WAS interaction. Just to get that out of the way...
Tactical screening is part of the game. The prince's mission was to tag you, to save his big ship. I his point of view, it was a good battle, and he acomplished his mission. Just becausw he is denying content for YOU does not mean he was griefing.
Or should everyone just sail around in what suits you? And tag you only when YOU want?
I sail around in a trader. If anyone attacks me i am opening a tribunal case for denying me trading content and wasting my time.
In any case , if you have a problem with OW tag mechanics, like they say
"Just go to PvE server"