[Bottox]

Yes, Macro mesh not found is generally written on console when trying to start from underwater and finish outside, on the opposite side of the map. It's fixed with new nav system. We're just waiting for it to be live on ffxiv.
New nav system also fixes the boats escapes from Sahagin dailies.

But on Ananta, it's just because you need to update your custom mesh:
https://www.dropbox.com/sh/58y542jst5012...cumLa?dl=0