From one of the twitter threads on the topic: "power blackout".

So likely the ship was uncontrollable and drifted into the bank. There seems to be evidence that there its bulbous bow is embedded in the bank.

As I shared in another comment according to NHK News in Japan, poor visibility due to sand storm was the cause. It is a Japanese ship operated by Taiwanese company.

Can you find that tweet again? I'm scouring every link I can find and I seem to have lost it.

In particular, there was one where someone said another ship behind them _also_ lost power/control around the same time and almost rear-ended them. I would really love to find that tweet again.

Aha, that explains. The sheer inertia of a ship like this, almost unimaginable. That'll jam that bow in there good.

Thanks for describing how the playback feature works, there's another vessel two back that ran into trouble as well:

https://gfycat.com/JointFirmGrayling