KanColle Kai talk:FAQ/@comment-24645329-20160522083951/@comment-26317176-20160605200001

It will take more than 1 try to get it back to white.

For example, I get hexagons turning to yellow/orange frequently, so I send some fleets to clear it up. One hexagon took me 4 runs just to get it back to white.

Ideally, you don't need to like go do all of the nodes and the boss. Try a sortie first, then when you get an S rank, leave the map.