A new sailing record was set recently, which didn't _quite_ beat 40 days - it took them 40 days and almost 11 hours.
If you've ever seen a SailGP boat flying up out of the water on their hydrofoils and doing 100kmh - imagine a 32m long 26m wide ocean going trimaran doing the same thing in a non stop circumnavigation of the globe. I think they _averaged_ 27knots or 50kmh!
If you _haven't_ seen the SailGP boats and are curious, here's somewhere to start: https://youtu.be/BQWOoP-Iwn8