Engineers & fortifications on rivers

[Moonchild]

I've placed an engineer on a river hex and noticed that it cannot build fortifications on that hex:

river.jpg (607.78 KiB) Viewed 382 times

Is that correct? Is river considered a "resource" hex (upon which fortifications are not allowed)?

[firsteds]

Isn't that specific hex one of those rare examples of a hex that is both land and sea? I think an amphib can move right in there and attack Hamburg from memory, and then disembark. I am not 100% sure but I don't think rivers are an issue for engineers.

[OldCrowBalthazor]

I've placed an engineer on a river hex and noticed that it cannot build fortifications on that hex:
river.jpg

Is that correct? Is river considered a "resource" hex (upon which fortifications are not allowed)?

That's a 'Canal' tile and it's not possible to build a fortification in that hex. (Kiel Canal)
Same goes for the Panama and Suez Canal hexes.

[Moonchild]

Thank you both! I think both this hex and the one above (north) are both land/sea hexes, i.e. "Canal" tiles.

[Elessar2]

Cities can't be placed there in the editor either.