Q3. With respect to MARPOL convention Annex IV, explain the criteria for discharging sewage from a ship into the sea when the ship is at a distance:
a) Within 3 nautical miles from the nearest land. (4)
b) Between 3 and 12 nautical miles from the nearest land. (6)
c) More than 12 nautical miles from the nearest land. (6)
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