IJN Tech tree research runs, Shiratsuyu! 

I use Harugumo line for regrinds , i have made all ready 57 on that line and I have strategy , I buy T5 with FXP , then grind line regular way , and there is profit there fort me , I have T,5,T6,T7,T8,T9 commanders on that line with 21p , depend what kind of eco bonuses I have I get 800-2mln commander xp , T5,T6,T7 I play 100% as torpedo boats , Shiratsuyu have crap gun in compare to most ships that you will meet in T8 & T9 and as you grind that line you will meet strong ships on the way , so torpedo patch is right way .

Hmm, a good demo of this DD. I find it very awkward to play and torps is probably the way rather than a hybrid build i use. I run turret traverse as I detest the glacial TR (why WG does not buff the TR, I don't know), about 30 secs is not comfortable to play. The gun layout is bad as well, as you have to show side to get all your guns on target. It's not a bad ship I just don't find it comfortable to play. Onto the Aki!