Talk:Construction/@comment-128.226.251.192-20150129031657/@comment-25730832-20150129080959

Most of the time it's superstituion. It just gives people more hop that they might be able to get the ship they want if they do it. If you wish to hold onto the belief then you can look at the data people obtained:

http://unlockacgweb.galstars.net/Kancollewiki/viewCreateShipLogList

Or just go for the recipes: For Sendai class, default recipe gives them, sortie gives them. Most of the time just be patience and they should show up since they're not too rare.