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The Annexes of MARPOL contain detailed regulations with respect to the six main groups of harmful materials: Petroleum in any form ; Noxious Liquid Substances (NLS) carried in bulk (Annex II); Harmful substances carried in packaged form (Annex III); Sewage (Annex IV); Garbage (Annex V); and Air emissions (Annex VI). [6] MARPOL states that ...
List of the MARPOL 73/78 Annexes Annex Title Entry into force [1] [5] No. of Contracting Parties/States [1] α % of the World Tonnage [1] β; Annex I: Prevention of pollution by oil & oily water: 2 October 1983: Annex II: Control of pollution by noxious liquid substances in bulk: 6 April 1987: Annex III
Annex IV of MARPOL was drafted to regulate sewage discharges from vessels. It has entered into force internationally and would apply to ships that are flagged in ratifying countries, but because the United States has not ratified Annex IV, it is not mandatory that ships follow it when in U.S. waters.
The Act to Prevent Pollution from Ships (APPS, 33 U.S.C. §§1905-1915) is a United States law that implements the provisions of MARPOL 73/78 and the annexes of MARPOL to which the United States is a party.
All cargo vessels where MARPOL Convention is applicable must have an oil record book in which the officer responsible will record all oil or sludge transfers and discharges within the vessel. This is necessary for authorities to be able to monitor if a vessel's crew has properly disposed of their oil discharges at sea.
The International Regulations for Preventing Collisions at Sea 1972, also known as Collision Regulations (COLREGs), are published by the International Maritime Organization (IMO) and set out, among other things, the "rules of the road" or navigation rules to be followed by ships and other vessels at sea to prevent collisions between two or more vessels.
The Annex also regulates discharges into the sea of untreated sewage, as defined in Annex IV of MARPOL 73/78, and establishes that all ships, before entering the Antarctic Treaty area, are fitted with a tank or tanks of sufficient capacity on board for the retention of all sludge, dirty ballast, tank washing water and other oily residues and ...
[2] All oil tankers with a gross tonnage of larger than 150 must have efficient Oil Discharge Monitoring Equipment on board. [3] [4] The oily discharge is sent out to sea through a pump. [5] The oily mixture has to pass through a series of sensors to determine whether it is acceptable to be sent to the discharge pipe. [6]