You really know your stuff few would even think of that and I bet you are right.
https://www.independent.co.uk/climate-change/news/baltimore-bridge-collapse-cause-ship-b2520228.html
from the link:
Cargo ships, responsible for 90 per cent of global trade, run on bunker or marine fuel. It was described as a “witch’s brew” of used motor oil and industrial byproducts in a 2018 report by The Atlantic Council. The fuel is widely used at major global ports, and has caused at least 200 ships to suffer “serious, sometimes complete engine failure”, the researchers noted, dubbing it “engine killers”. Some vessels were left adrift in the ocean, others ran aground, and some were carrying cargoes that could have caused serious human and environmental disasters.
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Also on another thread claims are being made that the dali builit in 2015 was under lease to Maersk and may not have had a bad service record. this may well be one of those stories that has no end,its looking like it already.