KanColle Kai talk:Quests/@comment-27948465-20160310223437

VC 4 and 5 require 3 exercises of each, with progress from previous quests counted. Same goes for VC 6 and 7, they require 5 every time but count all the expeditions done in the previous quests. See my posts a few comments down for some more info on quest progress retention (I did't make an account until the third one :X).

VC 11 does indeed require 3 exercises.