Team New Zealand boss Grant Dalton says the new AC75 America's Cup monohulls could roll right over if someone on board makes a mistake.

Speaking to the Herald from Italy, Dalton said the 75-foot foiling AC75 was unlikely to do a dramatic pitch-pole like the world saw two years ago but it could turn upside down. The boats were designed to be self-righting, depending on wind conditions, he said.

"I don't think you'll see a face plant like we did in Bermuda because monohulls don't do that. But you're more likely to see, and it's quite possible, that you'd see