Shipowners could be making a costly mistake if they take Middle East crude as the basis for calculating fuel costs under IMO 2020, according to a research report.

Using low-sulphur crude to ­refine and blend marine fuel oil could slash the price spread between high-sulphur fuel oil (HSFO) and low-sulphur fuel oil (LSFO).

China possesses ample stocks of naturally low-sulphur crude, and thus could be the missing factor in shipowners’ scrubber calculations, Shanghai shipping analyst Liu Xunliang said.