We’ve had ASROCs like this for decades. We didn’t fire them from “Gatling gun” launchers, but best I can tell from the article, the capabilities are similar.
I wonder if the Russian version works.
My first thought as well, but this system is not just a torpedo on a rocket. It also has an anti-torpedo variant that provides several minutes of what is termed ‘interference’ in the article. That isn’t something I’m aware an asroc ever provided. Only anti-toro stuff I knew of were sound generators.
Leaving your sophisticated weaponry out on deck semi-enclosed in a launcher-tube and exposed to the elements? Not wise. But Russian surface ships don’t typically spend much time at sea, so I guess that works OK?