TAILIEUCHUNG - Lecture Maritime safety and security administration - Topic: Ship-source marine pollution

Lecture Maritime safety and security administration - Topic: Ship-source marine pollution. The following will be discussed in this topic: Ship-source sewage, sewage, ship-source garbage, air pollution from ships, air pollution,. | Lecture 5 SHIP-SOURCE MARINE POLLUTION Ship-source Sewage Sewage includes drainage from urinals and toilets, medical premises and spaces containing live animals. It varies depending on the type of ship but the general sources include galleys, baths, scuppers and bilges. A scupper is an opening in the side walls of an open-air structure, for purposes of draining water. Ships have scuppers at deck level, to allow for ocean or rainwater drainoff Sewage The discharge of raw sewage into the sea can create health hazards. When sewage is discharged in coastal areas, it can lead to oxygen depletion and obvious visual pollution which is a major problem for countries with large tourist industries. MARPOL - annex IV Sewage can be dumped when a ship: has in operation an approved sewage treatment plant and is discharging comminuted and disinfected sewage using an approved system at a distance of not less than 4 nautical miles from the nearest land; or is discharging sewage which is not .

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