The Alabama is of an earlier class with 16" 45 caliber guns (the caliber tells how many times of the bore diameter is the barrel length).When in the Norfolk Navel Shipyard,where I taught physics to some of their employees, I was able to crawl about many ships.I have been in the gun room of turret # 1, right gun (there is no port-starboard as the gun turns).I am 6-1 and my hard hat was against the armor over-head.Two types of projectiles AP 2700 lbs and 6 ft, High- capacity 1900 lbs 64". Range,41,000 yds. The gun only recoils 48". Each one can fire every 30 seconds and there are 9 of them.