Jackets and clothing were still tied to the structure, which bears the name El Nido.
The wreckage was first sighted at sea near the Rarotongan Beach Resort by local fishing charter boats.
It was then seen floating about 8 miles out from the Edgewater resort.
Local fisherman Corey Fisher said he tried to return to the place where the wreckage was sighted to retrieve it, but it couldn’t be found.
“It was turned over when we saw it out at sea and looked pretty beaten up; the scary thing is it looked like someone had been sitting on one side of it because barnacles could be seen on only one side,” said Fisher.
Harbour master John Jessie said there had been no emergency nor any signals received prior to the sightings of capsized boat: “Nothing was received.”
The boat washed up onto to the reef in the Tikioki area on Monday night, and was swept ashore the next evening, and settled on the beach at the Fruits of Rarotonga.