Talk:World 1/@comment-221.190.81.192-20140317082816/@comment-113.29.215.232-20140318010715

They do have the silver metallic background, so they're right in the middle between rare and common. I-8 or hacchan is on gold rarity however.

http://kancolle.wikia.com/wiki/Ship#Rarity

Just keep crafting (less you need Iku, then don't) and sortieng to 1-5 boss node, you'll get one eventually.