[submarinerswife]

Malfunction - the captain can't be held responsible for hidden design flaws that realize themselves quickly and out of nowhere. Doesn't mean they can't courtmarshal him for it, but he'll win. And he'll be given back his boat.

This isn't Matlock, where your view of justice wins out in the end. The CO is responsible for EVERYTHING on his boat.

[mudblood]

"This isn't Matlock"

Sure, he's responsible because something broke. I'll agree that when a valve breaks loose, its his job to respond to it. But its not his fault that the valve break if it was a hidden, unknown design flaw - the Navy won't can a unique asset like a sub captain just because people on the internet think they should.
More things we don't know: maybe the Captain's expertise saved all their lives when they ran aground? Maybe he'll be given a medal for rising to the occasion? You don't know enough about the situation.