[coqadoodle]

The lights on the ship were going off and on, and it appeared to be smoking before hitting the bridge. Does not look like they had much control at the time.

[4gotunameagain]

Could it be that the power going off and on, and the smoke came from a panicky attempt to recover from a mistake and avoid hitting that bridge ?

[brazzy]

The power going off is most likely what caused the accident.

[jandrese]

Most likely it was engine failure which caused the steering to lose power and allowed the ship to be pushed by the current.

[GaryNumanVevo]

The dark smoke was most likely the diesel generator firing up to get some steering control back