General Subjects (Auxiliaries & Systems) USCG Question #1173 (Set 18)

Under the international MARPOL regulations under Annex IV, if the ship is more than 12 nautical miles from the nearest land, what statement is true?

Official USCG Answer & Rule Citation

Correct Answer: Option B — The discharge of any sewage, treated or untreated, is permitted.

Beyond 12 nautical miles from the nearest land, MARPOL Annex IV allows the discharge of sewage. At this distance, the environmental impact is minimized, permitting the discharge of sewage regardless of whether it has been treated, disinfected, or comminuted, provided the vessel is en route.

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