Board Thread:Fleet's Prepared-ness/@comment-33564057-20171104160428/@comment-33564057-20180128211222

I did a couple of improvements to one of my small caliber guns (the kai B one). I got to 6 stars then the upgrade after fails. From what I can vaguely understand from the tables, is it rng for improvement after the 6? then the same again at 10?

How do I do her ship repair? It's confusing. I can't seem to see an option for her to do it?