[2021] Naval Battles Rules Misprint... nvm

Ok, I have more information.

Firstly, there's no harm done in playing Naval Battles in a Group Format. You can only gain Oil. The picture linked above does show a negative number on a "loss", but that's in a 1 vs 1 competition which is not a Group Competition.

I was able to find the reward structure for the Battles section of the Naval Battle (ie: Activating the thing and doing battles to gain Stars).

So, in this above instance, you are:

A) Gaining Oil from participating in the Preparation Phase. Up to 800 Oil, as well as Bonus Attempts during the weekend for a more active clan.

B) Gaining Oil for Stars won during the Weekend section of time

and

C) Gaining a minimum of 300 Oil just for participating, even if you were last. Or more should you place somewhere in the middle of the Group so that the end reward is higher.

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All in all, there's nothing to be lost by turning on your Naval Battles and playing some games~

Thank you so much! That's wonderfully helpful <3

The fine gentleperson above found the thing:

It'll return to normal once 0.10.11 kicks in. I'm guessing the pacing was thrown off at 0.10.10 was a bit short due to impending Holiday stuff.

Yes, that looks odd. Perhaps they had a second or third member the left the clan?

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Either way, everything about the Group Competition is a gain of Oil. Definitely give it a go and try to have some fun~

I believe the client is bugged and not displaying the complete rules within the client. It's already been noted and should be remedied when able.