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I’ve seen some interesting YT videos about the engineering behind the sub. Turns out, that sub was a ticking time bomb, and many people had warned about it. The controller thing was perfectly fine, but the walls were not.
Using off the shelf consumer electronics in safety critical applications is never OK.
Of course it is. The US Navy uses Xbox controllers for their photonic masts, which we can all agree is pretty safety critical.
Thanks. I did remember that US subs used a off the shelf controller but couldn't think of the specific example.
Additionally with an off the shelf controller it's really easy to pack a replacement one. (And building a controller yourself - that one will always be worse and heavier than an off the shelf one plus replacement)
The crazy thing really is how they ignored everyone on warnings how not to construct a hull.