Upon further reflection I considered a few points. We now know, there was no watch.
Is this a Truth Aquatics policy?
If not, did the Captain order a watch?
If so, did the crewman on watch shirk his duties?
All of these are pertinent questions with no answers forthcoming in the news media.
I can see where the chain of command could have failed.
At least two people are going to be charged with manslaughter - believe that. Someones going to prison