Modular naval artillery concept - photo

[mccwho]

It's very cool, but wasn't a very similar program attempted and deemed a massive failure in the US Navy?

https://en.wikipedia.org/wiki/Littoral_combat_ship

IF I recall correctly the gun on those ships is of Swedish design and was designed for naval and coastal defense. It was selected because it's a rapid reload and can fire a wide range of shell types. It was designed from the beginning with stabilization, range, speedy rate of fire, accuracy and was a proven system.
But it is a smaller caliber than what the Germans were experimenting with. They were trying to use a proven weapon system and evaluate its effectiveness in a marine setting.