From: Hex 82,170
I agree the river should be there, it's just invisible on the map, and only the F6 key tells you it's there. Just suggesting a fix to the graphics, not the underlying code.
Yes, I can see why it is potentially confusing. I prefer the aesthetics of having the river on the map look like it does in real life (there is no river across the route between Diamond Harbour and Calcutta, just the Hooghly River that connects them), plus behave like it would in real life for the purpose of naval movement (direct movement between the bases), so for my 'extra extended' map I will leave it as is, but if I go back and make an updated stock map I might add the river so that it matches the hexside.