Four enormous Norwegian-made plastic pipes up to 480 metres (1575 ft) long were discovered washed up on the English coast after a collision with a container ship in the North Sea, officials said on Friday.
The Maritime and Coastguard Agency said a total of 12 sections of the pipe had come loose from tugs.
This massive pipe washed up on the beach at Horsey.
The giant pipes are brand new and were destined for a project in Algeria in north Africa.
"The remaining eight pipes are under control off shore".
An employee from Pipelife's export division said he was aware of the incident but was not authorised to comment further.
He added: "Dutch Marine BV supported by Marine Towing Services are working to remove the four pipes which have beached at Eccles on Sea, Sea Palling and Winterton".
The salvage operation was under way to tow the pipes back to Norway, where they are understood to have been manufactured by Pipelife in Surnadal.
The pipes have already been secured by vessels at sea or have been anchored off the coast of Norfolk, where they are being monitored by guard ships.
A luxury motor yacht has been destroyed after a fire on board earlier today. "If a 2.5-metre [8-foot] diameter pipe, several hundred-metre long pipe is moving in the water it is extremely risky", Pipelife's export manager Trygve Blomster tells The Guardian.
The largest of the pipes is 480 meters (1,575 feet) long; the other smaller sections measure up to 200 meters (656 feet) each.
The recovery of four giant plastic pipes washed up on the Norfolk coast may take "several weeks", the Maritime & Coastguard Agency (MCA) has said.
Other than their physical presence, it said the pipes were not believed to pose any other danger of, or potential for, pollution.