My travel since the release of the game was the following:
C8 > C9 > C10 > D10 > D9 = No Ghost Ships.
After the last update:
D9 from ONE island to the CLOSEST ONE = 4 Ghost Ships and ALL RESOURCES LOST.
WHO IS THE DEV THAT INSTEAD OF INCREASE THE RESPAWN OF GHOST SHIPS IN DECIMALS INCREASED IT IN TENS?