200 pound of tnt is 30.2 mJ in the M107 round you have 14.6 lbs of tnt in that shell. So basically 14 shells would equal about that many mJ. I'm sure that the s

200 pound of tnt is 30.2 mJ in the M107 round you have 14.6 lbs of tnt in that shell. So basically 14 shells would equal about that many mJ. I'm sure that the ship has more than 14 shells.