[Delta 21]

Big ships at sea burn DFM or #1 Diesel. Its ran thru centrifugal purifiers and service filters before its put into the engines because just one of the pistons of one of the engines in a vessel like this costs more than your family made last decade. If it was purchased out of the US it is probly hi in sulfur, but the fuel used to move the worlds ships around the ocean is pristeenly clean.

[texas booster]

The new 2020 ultra low sulfur rules will be enforced in two years. While burning bunker fuel seems like burning asphalt, almost all Western companies now burn a cleaner fuel to keep from fouling their engines.

And replacing a Wärtsilä engine does not make ship owners happy.

So is this article already out of date? Sure seems so.

https://gcaptain.com/shippings-2020-low-sulphur-fuel-rules-explained/