Talk:Nelson/@comment-5948212-20180929184313/@comment-33005456-20180929200836

Assuming that it's guaranteed to activate once per battle, we still have no control on when Nelson activates it. At worst the activation could (always) be delayed until night battle where either you don't want to enter unnecessarily or Nelson simply cannot participate in the first place because she belongs in main fleet, therefore the same as not activating at all.

I doubt it has anything to do with luck though. If anything, it's closer to artillery spotting only with Nelson bossing around telling other ships where to aim.