US Patent 11566195 Fuel oil composition

Provided is a fuel oil composition that has a sulfur content of 0.50 mass % or less but yet has a storage stability, long-term storage stability, combustion performance, low-temperature fluidity and kinetic viscosity sufficient for use in ships. A fuel oil composition that has a sulfur content of 0.50 mass % or less, aromatic content of 50.0 to 75.0 mass %, a mass ratio of sum of paraffin and asphaltene to the sum of aromatic and resin is 0.20 to 0.80 wherein the paraffin, the asphaltene, the aromatic and the resin are measured using a TLC/FID method respectively, a CCAI is 860 or less, a kinematic viscosity (50° C.) is 10.00 to 180 0 mm