Does Supply Work Over Water?

[Dichologos]

Question is as stated in the thread title. Allow me to elaborate, however.

I have seen most (but not all) of the World War Wednesday videos, but am still unclear as to how supply fully works.

As far as I understand it, you get supply depending on your proximity to controlled regions (provinces? areas? I forget which is which but the point stands), and supply can be strained by the level of development of said region being low or by simply having too many forces in the area. Or it being contested by enemy forces.

I also remember from WWW videos that cities apparently provide supply. How does this work?

Now my main question in more detail is: if you have naval superiority in a region, and convoys could conceivably safely pass through and provide supplies to your troops who have made naval invasions and the like, will they be able to?

Or do you need to obtain a coastal city for this to work? Or does it work in some other way entirely? I can understand if supply is difficult to provide over the sea without a port, of course.

 

[warith1000]

If I remember correctly, Daniel showed it in his Yapan playthrough and TL;DR Yes.

 

[Dichologos]

If I remember correctly, Daniel showed it in his Yapan playthrough and TL;DR Yes.

Yes, I do recall it being mentioned during the Japan playthrough that cities could provide supply. I also however vaguely remember there being an issue with landed troops being out of supply unless they managed to quickly capture a city on the coast, which is why I was wondering exactly how this worked.

With that being said, it isn't a major concern. If it requires coastal cities to provide supply, that is fine. If troops could be resupplied in limited fashion even outside of cities however if they had access to the coast and friendly naval superiority, I think that would be pretty cool. Same for getting air supplies in limited fashion if you have air superiority, and if you chose to do it. Perhaps something that DLC can address in the future.

 

[Nicolas I]

That was explained (with pictures) in DD#33 about supply : https://forum.paradoxplaza.com/foru...iron-iv-33rd-development-diary-supply.891122/

 

[Victor Cortez]

My understanding is that a coastal city (port) is not required per se, but it's essentially a de facto necessity.

 

[warith1000]

Also I am pretty sure it flows/trickles down from your capital or major city.

 

[Daddl]

Supply flows from your capital to outside regions. The major difference to HoI3 is that the supply doesn't get directed to the units themselves, resulting in messy supply lines changing every few seconds, but rather to the regions. You can clearly see the maximum number of units one region can supply, and are at any time able to identify bottlenecks and solve them by adding more infrastructure or ports.

Cities simply do add a few numbers to that supply, increasing the unit limit and resulting in supply even if the region is cut off from your capital. You can ignore the supply limit, but that means all your units in that region will fight worse.

For naval resupply you need a port, which isn't the same as a coastal city. Cities are simply victory points who generate supply on their own, ports receive supply overseas from your other regions. So you need to secure a port quickly if you plan your naval invasions not to fail horribly.

The amount of supply going through a port is determined by the amounts of convoys you have and the level of the port in question. If someone attacks your convoys and sinks enough of them, that results in your overall supply limit in the region your convoys tried to go to being lowered.

 

[Elwin00]

During the 1st co-op France stream Daniel remarked that they "are changing [the supply system] quite a bit" (this video on Twitch at 1:44:33).

 

[Dichologos]

Thank you for the replies, that pretty much answers my question.

Basically, it works just as I would have hoped it does. Ports allow supply from other regions, but these need protected convoys, and cities generate supply. So you can hold out in a city for a while even if surrounded, potentially (depending on the circumstances), and need to capture ports in order to maintain a naval invasion for long.

Sounds good.