Coastal squares as trade routes?

[Astorian]

I've been having a look through the xml files, and I wondered.

Is it possible for coastal squares to be trade routes in the same way that rivers are trade routes? if so what needs to be edited?
In some of my games I have had resources on single tile islands within my cultural borders, but cant get to them without building a city on said island. (which isnt always practical)

Thanks for any suggestions.

 

[Astorian]

Unfortunately though that only goes for trade between cities.
Ive also noticed that rivers cant be used to connect your resources as I originally thought. Which poses a different problem entirely.

 

[Ranbir]

I was under the impression that building a road to a river from the resource and the river going to the city or going to a road which goes to the city would.

 

[Crayton]

As long as there is a road, river, or coastline resources can be traded.

Astorian points out that resources on an island cannot be connected to the mainland unless there is also a city on that island. This puts the player in quite a pinch if the island is already within 2 tiles from its city.

I'd agree that this is bug, but make sure there is a road on the resource (even if it is a 1x1 island), the appropriate improvement has been built, and that Sailing has been researched. I haven't experimented with this so who knows if something actually needs to be fixed.