Hey Captain_Rawhide,
There is a combat mission going on that is giving 100% XP to ships: https://worldofwarships.com/en/news/sales-and-events/august-missions-2019/
Day of the Russian Navy
Start: Fri. Jul. 26 4:20 AM PT / 7:20 AM ET
End: Mon. Jul. 29 4:20 AM PT / 7:20 AM ET
The Day of the Russian Navy is celebrated on the last Sunday in July. On this day you'll enjoy discounts for re-searchable ships and in-game items, as well as new combat missions. The main reward will be the St. George Flag, which was received by the most famous ships of the Russian Imperial Navy as a symbol of their exceptional combat merits.
Discounts and bonuses:
+100% XP bonus for the first win of the day.
You can convert elite XP from Commanders into Free XP at the cost of 1 doubloon for each 35 Free XP.
−50% to the cost of Tier II–V researchable Russian/Soviet ships in credits.
−30% to the cost of Tier VI–VII researchable Russian/Soviet ships in credits.
−15% to the cost of Tier VIII–X researchable Russian/Soviet ships in credits.
−60% to the cost of consumables in credits.
−50% to the cost of economic signals in doubloons within the game client.
Is this what you are seeing in-game?