It's also a whole lot more fun shooting the deck gun yourself, especially in GWX3 with the sub and target bobbing up and down with the waves.
I had one time, and only once, that I hit a trawler below the waterline amidships with my deck gun (HE) and it promptly exploded, split in half and sunk. Talk about lucky! My crew and I were stunned!
I like to take out the engine first, then hit under the water line on both sides of the ship. My logic is that the more compartments I can hit, the harder time they're going to have to control the flooding. It's also great fun.
