SEA Shepherd is said to be building a new catamaran similar to Ady Gil which was hit by a Japanese Whaling vessel last week and later sank.
Californian animal lover Ady Gil, whom the boat was named after has vowed to raise the money to pay for a new craft.
Mr Gil said was shattered to see his boat sink to the bottom of the ocean :
"My little boat was just sitting there," he said.
"It wasn't a collision - it was like running a cement truck into a motorcycle that was parked."
The Australian Government has prompted Japan to organise its own internal investigation into the incident between the Ady Gil and the Shonan Maru No. 2.
During a recue attempt to salvage the stricken catamaran, Ady Gil filled with water and sank around 4am on Friday.
Sea Shepherd, Captain Paul Watson said a new version of the high-speed protest cat would be on the water within 12 months.
"We have the designs, we have the mould, and Peter Bethune, who designed and built the boat, is quite prepared to rebuild it," he said.
Captain Watson accused the Japanese whalers of deliberately colliding with the Ady Gil because of its ability to get between the whales and their harpoons.
"I think the Japanese saw the potential of the vessel and deliberately took it out," he said.
Greens senator Bob Brown sent a $2 million bill for the vessel to the Japanese ambassador.
