Welcome to Community Mythbusters. Several players have a game where we test various "facts" that are often dispuuted. If you have a myth you want us to test let us know.


We have three episodes today: In no particular order:
1) Do ships heal while in battle?
2) Can submarines see other submarines.
3) can destroyers see submarines


First episode: Do ships heal while in battle?

The standard answer about units healing is: Units heal 15% of damage at day change when in your own province. Ships heal anywhere there is water under the keel. (which is anywhere ships can be)

A frequent question to that is about healing during battle, so we tested that today.




One minute before day change the 8th destroyer squadron of Germany was pinned down by an enemy submarine.

Notice 93% condition on the pair of destroyers. They are engaged in combat with the submarine, both the sub attacking the destroyers and the destroyers attacking the sub.









Then the same image a minute after day change

And you can see that the condition has improved to 94%. So we can conclude that :
Ships will heal at day change, regardless of being in combat or not.

Next episode coming soon!

Episode 2: Can Destroyers see submarines? Or can submarines slip past destroyers?


Well this is more complicated to show, but here is what happens:

A destroyer cannot see a submarine. The only unit that can see a submarine is a naval bomber on patrol. Spies can also reveal subs, but of course you might not know if they were still in the same place later.

The submarine of course can see the destroyer.


The destroyer is plainly visible to the submarine. For this test I left the submarine on the default fire control of Fire at Will, same as non-high command users will have. I set the sub to move past the destroyer.

I neglected to get a picture of the firing circle range of the destroyer at this point, but IF the destroyer could see the sub it would bombard the sub from range. It does not do that.






When their paths cross ...

At the moment their paths cross my sub attacks the destroyer, simply because that is what two units at war do when they meet. At least most of the time.





One feature of a High Command subscription is the ability to change the fire control orders. For submarines I use the hold fire option. This means they lurk on the bottom of the ocean and the enemy passes by overhead oblivious, unless there is a naval bomber around.
Even though I am sharing location with the destroyer, it has no idea I am there because I have not attacked it.







Sorry @DxC, but no arrows here either. I promise to sneak one into the next episode.

Stay tuned for Episode Three: Can subs see other subs?

Episode 3: Can Submarines see other Submarines?


This is a question that defies logic a bit. I already stated that the only units that can detect or reveal submarines are Naval bombers and spies.


I know that my submarine cannot show me where a peaceful submarine is:

We staged this photo. Another countries sub is at the same location as mine. We are at peace in the above picture.




When we change diplomatic relations to war:

You can see the enemy sub is attacked because we are located at the same place and at war.


So in conclusion:
Subs can attack other subs, even when they can't be seen.


NOTE that as before with the destroyer, having subs set on hold fire will prevent them from engaging, Also in a few curious cases I was able to leave a battle by switching my sub to hold fire, but that does not always work as frequently the units are locked in combat. I am sure there is a fine line of distance, motion, direction of travel, or something that determines the ability to disengage.


As always results are not guaranteed.

Yes I did unfortunately. I should have closed and reopened that unit window before taking the screenshot. Since that was a week ago I probably won't re-stage the photo-op.

I take it that my budget request for this test would be denied then? Lol

Some arrows for you Dx



Distance to capital: 1.4 days
Not Kilometers, but days.
So reported in days leads one to think that travel time is involved.

In the past I have found that when it says 1.4 days that it will take a self propelled artillery unit 1.4 days to travel to that province from the capital. I believe originally it was calculated by that method, but now is calculated as straight line distance. So speed of units and obstacles do not affect it.