[Question_Assumptions]

It wouldn't surprise me to find a Roman shipwreck in the Americas because it isn't necessarily evidence of trade. It could be a single lost ship or even a ship that was carried, empty, across the ocean only to eventually sink. I've read that one of the reasons why Columbus thought he could sail across the Atlantic directly to China was that bodies of Asian-looking "Eskimos"/Innuit would wash up on the shores of Ireland and other parts of Europe from accidents far to the North and West. Things that float get shuffled around.

More interesting would be evidence that they were moored or finding more than one or two together.

[U S Army EOD]

Back in 1977 a single handed sailor was trying that very trip. He ran into trouble and decided he may want to abandon his boat because he thought it was sinking. He got into his life raft and tied it to the boat but the line broke. His boat beat him to Central America by about two weeks. He finally made it in the raft.