the Japanese have every right to hunt whales according to the IWC. If a ship prevents that legal persuit it is a PIRATE SHIP and should be sunk and if necessary with all hands.
Change the laws if you want them to stop whaling.
I watched a few episodes of the show Whale Wars last season.
My wife forbids it now, I kept waking the kids yelling “Ram them! Just turn and RAM THEM!!” at the TV.