Re: Effect of Hot/Cold scales
 

Wow, this is surprising (well, to me, anyhow). Are you saying it has no impact on anything (including economy?), or just that it has no impact on encumbrance?

Re: Effect of Hot/Cold scales
 

No impact on economy or supplies, afaik. This is not mentioned in the manual, but it worked that way in Dom2 and presumably remains so in Dom3. Don't know about encumbrance, it is possible you will get that penalty in the seas.

Edi

Re: Effect of Hot/Cold scales
 

But be aware that it isnt "water nations" but "water" itself which seems to avoid the affects. So your amphibian units will not only take a hit for being on land, but all of the temperature affects also. That takes a weak unit to barely moving. So unless you can be sure of attacking outside of your dominions and then quickly building land units, you can really force yourself into a corner.

Of course for defensive playing, or larger maps, it can be a useful thing to take harsh temps as a water nation.