Weird & Interesting science, take 2

[Dartz]

Japan demonstrates a ship-borne railgun -- and hits a moving target at sea with it.  (The thumbnail is AI-generated, but the real damage shots are no less interesting.)

"Asooka"

As an Evangelion weeb, that hurts.

Otherwise, if they weren't making Space Battleship Yamato references about that thing while shooting it then I'll be sorely disappointed. Otherwise, this thing sounds like it's going to need a battleship around it to power and cool it. Which sounds crazy until you realise how much space below a battleship's turret is given over to things that go BOOM when hit by another battleship - and while having a bank of capacitors hit will be 'distressing', it's not "There's something wrong with our bloody ships" distressing.  

Otherwise, the shot-cost of these things will be the fuel required to generate the power - and machining a projectile.