It's kinda like driving.....I am in my own lane...minding my own business, and someone decided to cut in, collision ensued, and that someone tried to pin the blame on me for the accident.
Of course, maritime right of way may be a little different. Anyone care to explain? It seems like, from the video. that the Chinese vessel did not make any aggressive maneuvers, but merely maintaining its course. The Japanese patrol on the other hand, was determined to get ahead of the Chinese vessel.
Any old sea salt here care to give an analysis?