How about posting a less one-sided source?
Ady Gil sinks after whaling skirmish - ABC News (Australian Broadcasting Corporation)
Whaling war turns violent
There are always two sides to every story.
How can you say it is deliberate and unprovoked. Who knows what happened in the moments before this very short video. I am not saying the Japanese ship is right, I am saying there is more to the story we don't know.