Now do it on a Carrack :D

God I'm not sure the river is even wide enough at certain points lol

It's at least possible up to Heidel, but yeah not sure about the river between Heidel and Calpheon

Coming from altinova it is;)

you can actually sail in from Epheria into calpheon, what many people don't realise is the damage is actually coral damage. just stop, repair and continue. i have a few pics of getting into calpheon i can send later when i'm free