Chief MAKOi published his evaluation of the accident:
(02:09 - 02:21) - There's a slight difference between the time stamps in the footage and in the VDR transcript;
(02:24 - 02:55) - Blackout causes all machinery to stop. Alarms sound, engine room becomes dark;
(03:50 - 04:09) - The main engine relies on auxiliaries, which require electricity before the engine can be started;
(04:10 - 04:45) - There are usually 3 or 4 big generators on board. 2 (3) are required to power the entire ship, 1 remains on stand-by;
(04:52 - 05:20) - There is also the emergency generator, which starts automatically after 45s (SOLAS requirement). Has its own fuel tank and switchboard, and only powers selected essential equipment and lighting;
(05:45 - 06:00) - The emergency generator cannot restore propulsion, but restores steering;
(06:11 - 06:28) - There are also batteries for radio, computers (UPS) and lights;
(06:37 - 07:01) - The emergency generator took 59s to activate;
(07:15 - 07:56) - The navigation lights are on the emergency switchboard and only activated after 59s. The VDR stopped recording during the period as well;
(08:26 - 09:24) - Black smoke after the emergency generator activation is probably from the big generators, required for restarting the main engine;
(09:34 - 10:08) - Difficult to start the main engine in reverse with the propeller still spinning;
(10:09 - 11:46) - AIS shows ship turned in the wrong direction, thus main engine was off, as rudder requires the propeller's thrust to be effective;
(13:12 - 14:10) - One big generator serves the main engine, the other(s) serve(s) the ship, a third (or fourth) on stand-by, they can be swapped;
(14:11 - 15:17) - All three (4) big generators failed, thus it's either fuel system related, or switchboard related (the latter more improbable due to electrical redundancies, but human error exists);
(15:17 - 17:31) - The black smoke, common fuel line and common fuel tank between generators, make the fuel system related issue more plausible, including human error (not refuelling the tanks, misoperation of valves, switching to wrong tank, contaminated/incorrect fuel);
(17:56 - 18:31) - Second "blackout" did not turn off the navigation lights, thus probably just an attempt to put the big generators on load ahead of main engine restart;
(18:32 - 18:43) - Port anchor dropped due to rudder ineffective, also had no effect;
(18:50 - 19:14) - Blackout again, thus even the emergency generator stopped;
(20:18 - 22:23) - It's the captain's responsibility and the chief engineer too;
(21:23 - 22:38) - Simulator training produces the same catastrophic results most of the time (Kobayashi Maru analogy);
(22:45 - 22:57) - Port regulation requiring tug assistance would most likely have avoided the accident.
Source: https://www.youtube.com/watch?v=jxeKXjDVqMA