Actor Kevin Costner speaks at a news conference Friday about his company's centrifuge machine. Three of the machines are on their way to the Gulf of MexicoActor Kevin Costner speaks at a news conference Friday about his company's centrifuge machine. Three of the machines are on their way to the Gulf of Mexico (Cheryl Gerber/Associated Press)

Three centrifugal oil-water separating machines manufactured by a company founded by Hollywood actor Kevin Costner are on their way to the Gulf of Mexico.

Energy giant BP PLC has purchased 32 of the machines from the Costner's Ocean Therapy Solutions to fight the oil spill in the Gulf caused by a broken well head leaking up to 60,000 barrels of oil a day.

The 2,000-kilogram machines will be deployed along 193 kilometres of the oil-scarred Louisiana shoreline over the next 60 days, according to Ocean officials, and three are headed there this weekend.

Costner said the machines can separate oil and water at a rate of 757 litres a minute without the use of chemical agents.

"I didn't come here to save the day," he said at a news conference in Port Fourchon, La. "I have come to participate."

BP and U.S. Coast Guard officials are now using more than 200 oil-skimming vessels, with limited results.

They're also using a controversial chemical oil dispersant.

BP earlier announced a $20-billion US fund to handle damage claims.

With files from The Associated Press