Board Thread:Wikia Discussion/@comment-25730832-20150514060207/@comment-25730832-20150518075948

My usual criterias for rare ship is (must be in red):

1) LSC-constructable ship only - E.g. Shioi, Yahagi

2) Droppable only in Extra Operation map like 1-5,2-5... - E.g. I-19, I-8, Uzuki, Tanikaze

3) Droppable only in Event - E.g. Prinz, Akizuki, Asashimo, Harusame

4) Extremely hard to drop (that is, only a few map drops them) - E.g. Sakawa, Hatsukaze

Everything other than that I usually consider them non-red. However, another way I can think off (if people still want full list of ship drop) is to use a third highlight