Marine diesel oil is a type of fuel specifically designed for use in marine vessels, such as ships and boats. It is derived from crude oil and is formulated to meet the unique demands of marine engines, providing efficient combustion and reliable performance. This fuel is essential for powering large ships, ensuring they can operate effectively over long distances. The composition of marine diesel oil includes various hydrocarbons, which help it maintain stability and reduce emissions. It is categorized into different grades, such as MDO (Marine Diesel Oil) and MGO (Marine Gas Oil), depending on factors like viscosity and sulfur content. These specifications help ensure compliance with environmental regulations.