Here's video footage of the Japanese Coast Guard tracking and engaging a north korean spy trawler. The events occur over several hours of daylight and night. It looks like the NK spy trawler refused to be boarded after warning shots with a minigun, it was set afire, stayed afloat, rammed, then the NK's shot at the JCG with automatic rifle fire and RPG(s). Then the Japanese crews really opened up on them and the spy trawler was set afire again and exploded. The last few seconds show the damage to the JCG vessel(s). Please add details if you can read Japanese and if you can find an English transcript about the fight.