That's an understatement. If you saw this "fuel" you'd call it tar. They have to heat it with steam just to get it pumped to the engines. https://en.wikipedia.

That's an understatement. If you saw this "fuel" you'd call it tar. They have to heat it with steam just to get it pumped to the engines. https://en.wikipedia.org/wiki/Fuel_oil#Bunker_fuel https://en.wikipedia.org/wiki/Fuel_oil#Bunker_fuel