@2ndoffnahlin Interesting. I tried to replicate the route (visually here it is, You could perhaps try sharing Yours so it is exactly the same) with same start day (2024-09-11 09:00 UTC). And for waves, I don't see discrepancy higher than 0.1m: [image: 1725978383206-screenshot_20240910_142620.png] [image: 1725978410724-screenshot_20240910_142646.png] [image: 1725978439148-screenshot_20240910_142716.png] [image: 1725978466046-screenshot_20240910_142743.png] [image: 1725978504710-screenshot_20240910_142822.png] [image: 1725978540731-screenshot_20240910_142858.png]