20 Inch Naval Gun
From NSwiki, the NationStates encyclopedia.
The 20 Inch (508mm) Naval Gun was a concept never followed upon in the real world, but it has poked up on NS. Originally it was designed by a US Civil War captain as a shore battery. There were a total of three of these 20" Rodman Guns constructed.
In the RL WWII, the concept of shipbourne 20" cannon appeared, and was in planning for the both the United States Navy Montana Class Battleship and for the "Super Yamato" class, Imperial Japanese Navy superbattleships.
Numerous NS navies deploy guns of this scale and larger on battleships or larger heavy gun-carrying classes such as the [in]famous Super-Dreadnoughts, and the technology is considered well establised by many present and near-future nations.
