Marine fuel is a blanket term that describes five individual types of fuel used in maritime vehicles. These fuels are categorized their blends and viscosity.
Origin: US, South America, Europe
Marine Gas Oil
- Residual oil: it is the heaviest fraction of the distillation of crude oil, with high viscosity (=> pre-heating necessary => used only in large ships) and high concentration of pollutants (e.g. sulphur). Its combustion produces a much darker smoke than other fuels and it needs specific temperature for storage and pumping. Due to these drawbacks, it is also the cheapest liquid fuel on the market.
- IFO 180 (Intermediate Fuel Oil) : it is a mix of 98% of residual oil and 2% of distillate oil.
- IFO 380 (Intermediate Fuel Oil) : it is a mix of 88% of residual oil and 12% of distillate oil. Due to the higher content in distillate oil, IFO 380 is more expensive than IFO 180.
- MDO (Marine Diesel Oil) : it mainly consists of distillate oil and has a lower sulphur content than the three fuels described above.
- MGO (Marine Gas Oil) : it is pure distillate oil and has the lowest sulphur content.