Ran thru the first part of my career with the deck gun aft. I was able to use it quite effectively but if the enemy was foreward had to engage at an angle allowing the gun to target either the starboard or port side. Once I graduated to the Gato and was able to install it fore I did so. Now I can engage from straight on with alot of latitude on attack angles.
No regrets here. I aggressively use it for surface attacks with defenseless enemy vessels or finishing off damaged ships.
Up front for me.
