Talk:Isuzu/@comment-115.66.171.10-20150828135757/@comment-4823400-20150913034414

Actually that is indeed +4, just that the calculation rounds it to 5, as you can see on the table in this page :

http://kancolle.wikia.com/wiki/Modernization

If she actually gave +5, then the effective value assuming complete success (which is what is shown) would be +6

(For example, try modernizing with common DDs who are not nameship, most of whom gives +1 Torp, with 4 DDs, the bonus rounds to +5, with 5 DDs it becomes +6)