Fuel oil is a type of fuel produced in the petrochemical industry and derived from the refining of crude oil. It is commonly used for shipping, heating, energy generation, and industrial processes. Classification of Fuel Oil is often considering viscosity and other properties.

Fuel Oil, distinguished by its relatively higher viscosity, remains the first choice for many vessels, enabling extended and economical voyages. However, the environmental repercussions of Fuel Oil, notably its sulfur emissions, have prompted the exploration of alternative options such as Marine Gas Oil (MGO), prized for its cleaner combustion profile.

Stored in onboard tanks, fuel oil undergoes meticulous management and distribution to ensure uninterrupted operations during maritime journeys. Despite its indispensable role in maritime commerce, fuel oil’s environmental impact has sparked ongoing efforts to develop sustainable alternatives and implement stringent regulations to mitigate its ecological footprint.