Source: CE Delft / EMSA (2017). The Management of Ship-Generated Waste On-board Ships, Lisbon: EMS
For almost every type of waste generated by seagoing vessels, there is a variety of waste flows depending on the size of the ship; the cargo carried, and the number of persons on board. Fuel is a primary source of oily waste, depending on the size of the ship, the type of fuel used, the amount consumed, and the condensation and leakages in the engine room.
Some additional variables are important regarding the waste generated onboard passenger and cruise ships. These are the provisions for passengers and personnel on board, the types of products used, and the type of food prepared.