Okay, I think it's time for feigling to actually make decision. Is the map we have the entirety of the actual world (and sailing across the western edge would put you on the eastern edge) or is it just the known world with large tracts of ocean in either direction? Because if it's the latter, I don't see why a ship from North-Eastern Frisstreek would be traveling through Naaru waters to get to Manram.

EDIT: And if this has already been stated, please excuse my stupid question.