The stranded ship Rena remains unstable and salvage crews will hold off pumping more than 1300 tonnes of heavy fuel oil off the vessel tonight.
They (salvage crews) don't want to be inside the vessel, they're working on it on the outside because that's the safest place.
Maritime New Zealand (MNZ) salvage headsaid if the weather turned, there was a chance 100 tonnes of oil in the duct keel could leak out.
He said one seasoned salvage expert said the Rena is one of the worst wrecks he has ever worked on. The ship has been found to be unstable. Though the bow of the ship is placed firmly on the reef, the stern is hanging in space.
Earlier today workers attached four platforms to the side of the listing vessel giving them a level surface to work on.The pumps where expected to be lowered into the tanks today, but weather, stability of the vessel and equipment did not permit this.
At least 1000 sea birds have been died in New Zealand's worst marine environmental disaster and contaminated a 30 kilometers of the stretch of beach.