Board Thread:Wikia Discussion/@comment-26091666-20151103015609/@comment-1915363-20160112010607

Qunow wrote: Request for confirmation: Are a these drops only appear with certain formation? Any other that are not listed also carry this property?

6-1 and 1-6 are more or less confirmed to have formation-limited drops.
 * 2-2 Hamakaze
 * 6-1 I-401
 * 6-2 Sakawa Yahagi
 * 1-6 Ooyodo Asagumo
 * 4-5 Asashimo

Gotta lookup poi-statistics for the rest though...