Ship Count overlay
From Stars!wiki
This overlay displays the number of ships at each location above the fleet symbol. If you are filtering for specific ship types, only that number is displayed. For example, if you have a filter that displays only enemy warships, the count above each fleet symbol will be the count of just warships, not the total number that may actually be in the fleet.
If Player Colors is turned "on" numbers appear in the color assigned to that player. Your fleet numbers always appear in white.
