@Andy
What usually happens to me is the WO calls out the distance and while I'm clicking all the buttons it will drop 100M from what he said because I'm usually at flank speed. This creates a miss. Now I adjust the cannon 100m less then what the WO states and I get the desired results. Yes, if the seas be somewhat rough you will miss more often. The God blame thing is rocking and reeling around....it is not a wonder you get any hits at all

I usually fire as close to 0 degrees off my bow as possible because it seems to be more stable platform.