This is a left-behind question and never explained.
Is Avonmora a far part of the Earth, Caribbean-like, where for some reason our ships are confined?
But, if so, why can't we travel to Old Europe or to the Americas?
Or is Avonmora a somewhere-else place, like a different planet (for example like Narnia, or the Middle Earth, or Westeros)?
Why can't we explore what happens traveling to Chalkos sailing west from Kanoni then?
I was adding a post to the night/day thread and I was wondering why should we expect earthlike stuff in a fantasy world, like a 24h day/night cycle.
One hint that Avonmora is not flat is that is not Euclidean. Traveling from A to B could be shorter if not in straight lines. So I tend to think it could be a little planet on its own.