Talk:Quests/@comment-3502824-20161231151853/@comment-460323-20161231174040

S-rank 2-3, 3 times with either a DD/AV/Taigei FS.

Then it'll unlock another quest that requires BBV FS, a fleet with 2BBV+2CAV, S-rank 4-2 3 times. You can choose between Shiun, OS2U or RO43 seaplane as reward.

Then you'll have a 3-5 quest requiring 1CV FS + 2DD, probably S-rank 3 times as well.