This is currently on hold

. I managed to destabilize the cannon using lowered elevation value (or stabilize less to be correct), but the zoom view is still magically locked to the horizon line! I will return to this if I have more time and some pointers. It seems that what was possible in SH 4, isn't anymore in SH 5.
I still might do a little "more realistic deck gun mod" which would include this lowered elevation value, new graphics to the zoom view and lowered damage (as some crucial mods double the damage as well).