Ross Garnsey said a workmate found the remains of the barge and dragged it up the beach to the Cape Flattery Silica Mine, about 300km north of Cairns.
It was in poor condition with its sides and canopy missing. It looked like it had been drifting upside-down for a long time because the engine cowling had been torn off and the exposed parts worn down.
Mr Garnsey's curiosity was piqued so he went online and found the Auckland company that built the barge. He then searched for 'Facilitator II' and 'lost' until he found an Advocate story from last year.
He was amazed the barge had drifted so far without sinking, given the cracks and holes in its hull. It would have weathered a few cyclones in that time.
Mr Garnsey said the 30km beach between Cape Bedford and Cape Flattery seemed to collect anything drifting up Australia's east coast. Just last week a boat which had broken down at Port Douglas, 250km away, also washed up at the beach. No one at the mine had any plans for the barge, he said.
"And I don't think the owner will ever want to salvage it. There's not enough of it left to do anything with anyway."
The mine is more than two hours' drive north of the nearest settlement, Cooktown, and has 50 fly-in, fly-out workers.