矢矧 Yahagi 2013 November event E5 boss drop (A rank or higher)
These ships may become buildable in future updates.
Building recipes
DISCLAIMER: THESE RECIPES ARE NOT GUARANTEED TO GIVE YOU THE SHIP YOU WANT IN THE NUMBER OF CRAFTING ATTEMPTS THAT YOU CAN AFFORD. PERCENTAGES LISTED ON SOME RECIPES ARE SOURCED FROM wikiwiki.jp/kancolle AND ARE NOT REPRESENTATIVE OF ACTUAL IN-GAME CHANCES.
PLEASE ADD NEW RECIPES YOU BELIEVE SHOULD BE REVIEWED FOR ADDITION INTO THE SPECIAL TABLE AT THE BOTTOM OF THIS SECTION.
data from http://kancolle-db.tk/ suggest raising value as close to 300 fuel and 400 steel is the most significant factor in obtaining rare destroyer, raising ammo value helps too but not more than half the significance of individual fuel and steel value. Raising value of boxite with 300 fuel and 400 steel will only increase the likelihood of carriers.