Talk:Combat/@comment-5412697-20141204065438/@comment-132.205.64.131-20141204194546

It will give you a 1/3 chance of double attack, but less frequent CI. And if you're confident with their accuracy, not a bad idea.

Theoretically your set up atm has the highest CI chance. You may check the link below:

http://kancolle.wikia.com/wiki/Artillery_Spotting_%28%E5%BC%BE%E7%9D%80%E8%A6%B3%E6%B8%AC%E5%B0%84%E6%92%83%29