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Japan Becomes 1st Country Ever To Fire Electromagnetic Railgun From An Offshore Vessel
(www.eurasiantimes.com)
This is a most excellent place for technology news and articles.
Uhh, I dunno how much declassification you're looking for but here's the US Navy's Youtube channel with a video of some test firings: https://www.youtube.com/watch?v=OSce3nEY6xk
IIRC, the problem wasn't that it didn't work but that the barrels wore out too quickly to be useful. I suppose they could have put this on a Zumwault like originally intended but that would just be a PR stunt when the main problem was throwing the gun away after 10 shots.
I think there was an episode of Evangelion where they posed the same problem and solved by having multiple guns to switch to. I guess it's common knowledge of thermal dynamics? IDK
This is talking about firing from an off shore vessel though. They declassified the test firing on land years ago.
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