At 1800 Hours the harpoon vessels Yushin Maru No. 1 and the Yushin Maru No.3 decided to run the Sea Shepherd blockade to transfer two dead whales to the flensing deck of the Nisshin Maru. The Sea Shepherd ship Steve Irwin was blocking the slipway to prevent the transfer in order to shut down the illegal Japanese whaling operations.
As the Nisshin Maru attempted to hook onto the dead whale, the Steve Irwin and the Yushin Maru No.3 collided with the forward starboard side of the Steve Irwin and the port stern side of the harpoon vessel coming together.
"We told them to not continue their illegal whaling operations and that we would be blocking the stern slipway of the factory ship," said Captain Paul Watson. "They decided to test our resolve and apparently expected us to retreat when they charged in ahead of us to make the transfer."
Captain Watson said that the Steve Irwin became difficult to control under a barrage of metal objects, blasts from the water cannons, and the disorientation caused by the LRAD acoustic weapons that the whalers were using on the conservationists.