This resulted in systems failures that took six hours to repair and surface the vessel. The onboard oxygen system poisoned the crew after a catastrophic failure.
wut???
From an interview with the crew: https://www.youtube.com/watch?v=9DMQJtKaXtM
Our boats have CO2 scrubbers and oxygen generators as a backup. The Chinese boats apparently don’t have the generators. With primary power out the CO2 scrubbers stopped working. The CO2 levels increased until the crew suffocated.
CC