I was on that ship but left before the accident, I'm pretty positive it was sleep deprivation. The schedule changed at sea frequently so you couldn't get used t

I was on that ship but left before the accident, I'm pretty positive it was sleep deprivation. The schedule changed at sea frequently so you couldn't get used to what little sleep pattern you were getting. We also had surprise drills that can happen literally any time of day or night. Longest I stayed awake was 72 hours straight.