A New Battleship

406mm, or 16-inch, naval guns can be called the pinnacle of naval artillery firepower in the interwar period between the First and Second World Wars.

They're monsters capable of firing shells weighing an astounding one ton per gun.

The power of a 406mm gun, which leaves a crater the size of a soccer field on the ground every time it fires, is evident in wars involving the U.S. military.

"I thought a rumored nuclear bomb had dropped."

Those were accounts left by Korean War veterans and British soldiers in the Gulf War after witnessing a full salvo from 406mm naval guns.

Even allowing for some exaggeration, they were guns with such monstrous power that they could be mistaken for nuclear weapons. Ships carrying guns like these naturally grew in size as well.

The 406mm-gunned battleships in history were more than twice the size of Dreadnought.

And the battleship I had in mind as a model was the 1920 South Dakota-class battleship, armed with twelve of those 406mm guns.

At this point, it could easily surpass even the firepower of a ninth-tier mage.

With twelve 406mm guns mounted on it, it could literally erase a city through sheer firepower...