Where does this come from, and can I check it?

The AC75 class lifts its hull clear of the water on two curved arms. The figure is taken from America's Cup, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a sports fact?

Yes. It sits on the Sports shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

America's Cup yachts now fly on hydrofoils

The AC75 class lifts its hull clear of the water on two curved arms The 75-foot monohull uses foil arms and a soft wing sail, and can reach speeds well over 40 knots. Foiling reduces drag dramatically but makes the boat unstable, so crews constantly adjust the flight height. The change came in for the 2021 edition in Auckland. It sits in Mondo's sports collection, one of 200 facts that each trace back to the reference below.

Where this comes from

America's Cup

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: sailing, foiling, engineering

America's Cup yachts now fly on hydrofoils: the short answers

Where does this come from, and can I check it?: The AC75 class lifts its hull clear of the water on two curved arms. The figure is taken from America's Cup, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a sports fact?: Yes. It sits on the Sports shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.