HSFO 180 refers to High-Sulfur Fuel Oil 180. It is a type of heavy fuel oil used in various industries, including marine and power generation. The “180” in HSFO 180 refers to its viscosity, specifically its kinematic viscosity at 50 degrees Celsius.

HSFO 180 is characterized by its high sulfur content, typically exceeding regulatory limits for sulfur emissions. It is a residual fuel oil obtained from crude oil refining processes, primarily from the heavy residue left after distillation. HSFO 180 is commonly used in large marine vessels, such as cargo ships and tankers, as well as in some power plants for generating electricity.

It’s worth noting that HSFO 180 is subject to environmental regulations due to its high sulfur content, and many regions have implemented restrictions on its use to reduce sulfur emissions and mitigate environmental impact. In some areas, the use of HSFO 180 is being phased out or replaced with lower-sulfur alternatives, such as marine gas oil (MGO) or low-sulfur fuel oil (LSFO), to comply with stricter emission standards.