View source for MARPOL 73/78

{{Short description|International marine environmental convention}}
{{Use dmy dates|date=January 2025}}
{{Infobox Treaty
|name                = MARPOL 73/78
|long_name           = International Convention for the Prevention of Pollution from Ships, 1973 as modified by the Protocol of 1978
|image               = MARPOL 73-78 signatories.png
|image_width         = 310
|caption             = MARPOL 73/78 ratifying states (as of April 2008)
|type                = 
|date_drafted        = 
|date_signed         = 
|location_signed     = 
|date_sealed         = 
|date_effective      = 2 October 1983
|condition_effective = 
|date_expiration     = 
|signatories         = 
|parties             = 158<ref name="IMO_Status_2019">{{citation |url=http://www.imo.org/en/About/Conventions/StatusOfConventions/Documents/StatusOfTreaties.pdf |work=IMO |title=Status of Treaties |date=16 December 2019 |access-date=31 December 2019 |archive-date=28 May 2020 |archive-url=https://web.archive.org/web/20200528090136/http://www.imo.org/en/About/Conventions/StatusOfConventions/Documents/StatusOfTreaties.pdf |url-status=dead }}</ref>
|depositor           = 
|language            = 
|languages           = 
}}
{{Pollution sidebar}}

The '''International Convention for the Prevention of Pollution from Ships, 1973 as modified by the Protocol of 1978''', or "'''MARPOL 73/78'''" (short for "marine pollution") is one of the most important international marine [[international environmental law|environmental conventions]].<ref>{{cite web | url=https://www.edumaritime.net/imo/marpol-convention | title=What is MARPOL Convention? IMO Convention for the Prevention of Pollution from Ships }}</ref> It was developed by the [[International Maritime Organization]] with an objective to minimize [[pollution]] of the [[ocean]]s and seas, including [[marine debris|dumping]], [https://www.epa.gov/controlling-air-pollution-oil-and-natural-gas-industry/basic-information-about-oil-and-natural-gas oil and air pollution].

The original MARPOL was signed on 17 February 1973, but did not come into force at the signing date. The current convention is a combination of 1973 Convention and the 1978 Protocol,<ref>{{Cite web|title = Chronology & Search|url = https://martinottaway.com/technical-resources/max1-chronology/|website = MAX1 Studies|access-date = 2015-07-15|url-status = live|archive-url = https://web.archive.org/web/20160304185609/http://www.martinottaway.com/technical-documents/MAX1-Studies/chronology|archive-date = 4 March 2016}}</ref> which entered into force on 2 October 1983. As of January 2018, 156 states are parties to the convention, being [[flag state]]s of 99.42% of the world's shipping tonnage.<ref name="IMO_Status_2019"/>

All ships flagged under countries that are signatories to MARPOL are subject to its requirements, regardless of where they sail, and member nations are responsible for vessels registered on their national ship registry.<ref name=crs>{{cite web | last=Copeland | first=Claudia | url=http://www.earth-forum.com/NLE/CRSreports/08Jun/RL32450.pdf | title=Cruise Ship Pollution: Background, Laws and Regulations, and Key Issues | archive-url=https://web.archive.org/web/20130425222442/http://www.earth-forum.com/NLE/CRSreports/08Jun/RL32450.pdf | archive-date=25 April 2013 | work=[[Congressional Research Service]] | date=6 February 2008 | quote=This article incorporates text from this source, which is in the public domain }}</ref>

==Provisions ==
MARPOL is divided into Annexes according to various categories of pollutants, each of which deals with the regulation of a particular group of ship emissions.

{| class="wikitable" border="1"
|+ List of the MARPOL 73/78 Annexes
! Annex !! Title !! Entry into force<ref name="IMO_Status_2019"/><ref name=":0" />!! No. of Contracting Parties/States<ref name="IMO_Status_2019"/>{{ref|Alpha|α}} !! % of the World Tonnage<ref name="IMO_Status_2019"/>{{ref|Beta|β}}

|-
| [[Marpol Annex I|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 ||Prevention of pollution by harmful substances carried by sea in packaged form || 1 July 1992 || 138 || 97.59

|-
| Annex IV || Pollution by sewage from ships || 27 September 2003

|-
| Annex V || Pollution by garbage from ships || 31 December 1988

|-
| Annex VI||Prevention of air pollution from ships || 19 May 2005 || 72 || 94.70

|-
| colspan="5" align="left" |

'''Notes'''

{| border="0"

|+

|
:{{note|Alpha|α}} As of 31 July 2013

:{{note|Beta|β}} Based on World Fleet Statistics as of 31 December 2012
|}
|}

=== Annex I ===
{{Main|Marpol Annex I}}
MARPOL Annex I came into force on 2 October 1983 and deals with the discharge of oil into the ocean environment.<ref>{{Cite journal |publisher=Institute of Maritime Law, Southampton University |date=2022-12-09 |journal=The Ratification of Maritime Conventions |title=I.7.10 (OILPOL, 1954) INTERNATIONAL CONVENTION FOR THE PREVENTION OF POLLUTION OF THE SEA BY OIL, 1954, AS AMENDED |url=https://www.i-law.com/ilaw/doc/view.htm?id=131747 |language=en}}</ref> It incorporates the oil discharge criteria prescribed in the 1969 amendments to the 1954 [[International Convention for the Prevention of Pollution of the Sea by Oil]] (OILPOL). It specifies tanker design features that are intended to minimize oil discharge into the ocean during ship operations and in case of accidents. It provides regulations with regard to the treatment of engine room bilge water ([[Oily Water Separator (marine)|OWS]]) for all large commercial vessels and ballast and tank cleaning waste ([[Oil Discharge Monitoring Equipment|ODME]]). It also introduces the concept of "special sea areas (PPSE)", which are considered to be at risk to pollution by oil.  Discharge of oil within them has been completely outlawed, with a few minimal exceptions.<ref name=":0">{{Cite web|url = http://www.imo.org/KnowledgeCentre/ReferencesAndArchives/HistoryofMARPOL/Documents/MARPOL%2073-78%20Brief%20History%20-%20List%20of%20amendments%20and%20how%20to%20find%20them.htm|title = MARPOL73-78: Brief history – list of amendments to date and where to find them|date = 2012|access-date = 3 June 2015|website = MARPOL73-78: Brief history – list of amendments to date and where to find them|publisher = IMO|archive-date = 6 March 2015|archive-url = https://web.archive.org/web/20150306232814/http://www.imo.org/KnowledgeCentre/ReferencesAndArchives/HistoryofMARPOL/Documents/MARPOL%2073-78%20Brief%20History%20-%20List%20of%20amendments%20and%20how%20to%20find%20them.htm|url-status = dead}}</ref>

The first half of [[Marpol Annex I|MARPOL Annex I]] deals with engine room waste. There are various generations of technologies and equipment that have been developed to prevent waste such as [[oily water separator (marine)|oily water separators]] (OWS), [[oil content meter]]s (OCM), and [[port reception facilities]].<ref name=":1">{{Cite web|title = International Convention for the Prevention of Pollution from Ships (MARPOL)|url = http://www.imo.org/en/About/Conventions/ListOfConventions/Pages/International-Convention-for-the-Prevention-of-Pollution-from-Ships-(MARPOL).aspx|website = imo.org|access-date = 2015-07-23|archive-date = 4 October 2019|archive-url = https://web.archive.org/web/20191004053913/http://www.imo.org/en/About/Conventions/ListOfConventions/Pages/International-Convention-for-the-Prevention-of-Pollution-from-Ships-(MARPOL).aspx|url-status = dead}}</ref>

The second part of the [[Marpol Annex I|MARPOL Annex I]] has more to do with cleaning the cargo areas and tanks. [[Oil discharge monitoring equipment]] (ODME) is a very important technology mentioned in [[Marpol Annex I|MARPOL Annex I]] that has greatly helped improve sanitation in these areas.<ref name=":1" />

The [[oil record book]] is another integral part of [[Marpol Annex I|MARPOL Annex I]], helping crew members log and keep track of oily wastewater discharges, among other things.

=== Annex II === 
MARPOL Annex II came into force on 2 October 1983. It details the discharge criteria for the elimination of pollution by noxious liquid substances carried in large quantities. It divides substances into{{what?|reason=divides substances into what?|date=March 2025}} and introduces detailed operational standards and measures. The discharge of pollutants is allowed only to reception facilities with certain concentrations and conditions. No matter what, no discharge of residues containing pollutants is permitted within {{convert|12|nmi|km|0|abbr=off}} of the nearest land. Stricter restrictions apply to "special areas".<ref name=":0" />

Annex II covers the International Bulk Chemical Code (IBC Code) in conjunction with Chapter 7 of the [[SOLAS Convention]]. Previously, [[chemical tanker]]s constructed before {{dts|1 July 1986}} must comply with the requirements of the Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (BCH Code).<ref>{{cite web|title=IBC Code|url=http://www.imo.org/en/OurWork/Safety/Cargoes/CargoesInBulk/Pages/IBC-Code.aspx|website=imo.org|access-date=2 July 2017|archive-date=30 July 2019|archive-url=https://web.archive.org/web/20190730102414/http://www.imo.org/en/OurWork/Safety/Cargoes/CargoesInBulk/Pages/IBC-Code.aspx|url-status=dead}}</ref>

=== Annex III ===
MARPOL Annex III came into force on 1 July 1992.  It contains general requirements for the standards on packing, marking, labeling, documentation, stowage, quantity subtraction, division and notifications for preventing pollution by harmful substances. The Annex is in line with the procedures detailed in the International Maritime Dangerous Goods (IMDG) Code, which has been expanded to include marine pollutants.<ref>{{Cite web |last=Anish |date=2022-08-23 |title=What is International Maritime Dangerous Goods Code (IMDG)? |url=https://www.marineinsight.com/maritime-law/what-is-international-maritime-dangerous-goods-code-imdg/ |access-date=2023-06-30 |website=Marine Insight |language=en-US}}</ref> The amendments entered into force on 1 January 1991.<ref name=":0" />

=== Annex IV ===
Marpol Annex IV came into force on 27 September 2003.  It introduces requirements to control pollution of the sea by sewage from ships.

=== Annex V ===
[[File:MARPOL 73-78 Instructions.png|thumb|MARPOL 73-78 Instructions]]
MARPOL Annex V (''Regulations for the Prevention of Pollution by Garbage from Ships'') came into force on 31 December 1988.  It specifies the distances from land in which materials may be disposed of and subdivides different types of garbage and marine debris. The requirements are much stricter in a number of "special areas" but perhaps the most prominent part of the Annex is the complete ban of [[Ocean dumping|dumping]] plastic into the ocean.<ref>{{Cite web|url=http://www.imo.org/en/OurWork/environment/pollutionprevention/garbage/Pages/Default.aspx|title=Garbage|series=Pollution Prevention|website=imo.org|language=en-GB|access-date=2018-04-14|archive-date=15 April 2018|archive-url=https://web.archive.org/web/20180415130402/http://www.imo.org/en/OurWork/environment/pollutionprevention/garbage/Pages/Default.aspx|url-status=dead}}</ref>

=== Annex VI ===
MARPOL Annex VI came into force on 19 May 2005.  It introduces requirements to regulate the air pollution being emitted by ships, including the emission of ozone-depleting substances, [[NOx|Nitrogen Oxides (NOx)]], [[Sulfur oxide|Sulfur Oxides (SOx)]], [[Volatile organic compound|Volatile Organic Compounds (VOCs)]] and shipboard incineration. It also establishes requirements for reception facilities for wastes from exhaust gas cleaning systems, incinerators, fuel oil quality, off-shore platforms and drilling rigs, and the establishment of [[Emission Control Area|Sulfur Emission Control Areas (SECAs)]].<ref name=":0" />

==== IMO 2020 ====
As of 1 January 2020, new emission standards are enforced for fuel oil used by ships, in a regulation known as '''IMO 2020'''. The global sulphur limit (outside SECA's) dropped from an allowed 3.5% sulphur in marine fuels to 0.5%.<ref name="IMO 20200101">{{cite web |title=IMO 2020 – cutting sulphur oxide emissions |website=International Maritime Organization|date=1 January 2020 |url=https://www.imo.org/en/MediaCentre/HotTopics/Pages/Sulphur-2020.aspx|access-date=9 January 2025}}</ref> This will significantly improve the air quality in many populated coastal and port areas, which will prevent over 100,000 early deaths each year, and many more cases of asthma in these regions and cities.<ref name="Nature_Sofiev_20180206">{{Cite journal| doi = 10.1038/s41467-017-02774-9| issn = 2041-1723| volume = 9| issue = 1| last1 = Sofiev| first1 = Mikhail| last2 = Winebrake| first2 = James J.| last3 = Johansson| first3 = Lasse| last4 = Carr| first4 = Edward W.| last5 = Prank| first5 = Marje| last6 = Soares| first6 = Joana| last7 = Vira| first7 = Julius| last8 = Kouznetsov| first8 = Rostislav| last9 = Jalkanen| first9 = Jukka-Pekka| last10 = Corbett| first10 = James J.| title = Cleaner fuels for ships provide public health benefits with climate tradeoffs| journal = Nature Communications| date = 6 February 2018| page = 406| pmid = 29410475| pmc = 5802819| bibcode = 2018NatCo...9..406S| doi-access = free}}</ref><ref name="FMI_20160812">{{cite document|first1=James J. |last1=Corbett |first2=James J. |last2=Winebrake |first3=Edward W. |last3=Carr|title=Health Impacts Associated with Delay of MARPOL Global Sulphur Standards |publisher=Finnish Meteorological Institute |date=12 August 2016}}</ref> Over 170 countries have signed on to the changes, including the United States.<ref>{{Cite web |url=https://www.cnbc.com/2019/07/15/oil-imo-2020-marks-the-biggest-change-in-oil-market-history.html |title=The 'biggest change in oil market history' is less than six months away |last=Meredith |first=Sam |date=2019-07-15 |website=[[CNBC]] |access-date=2019-11-19}}</ref> This is expected to create massive changes for the shipping and oil industries, with major updates required to ships and the increased production of lower sulfur fuel.<ref>{{Cite web |url=https://www.visualcapitalist.com/imo-2020-the-big-shipping-shake-up/ |title=IMO 2020: The Big Shipping Shake-Up |last=Viens |first=Ashley |date=2019-06-12 |website=Visual Capitalist |access-date=2019-11-19}}</ref>

Bunker fuels used within an emission control zone (i.e. North Sea) must have a sulphur content level of less than 0.1% (1000ppm).

The IMO has worked on ensuring consistent implementation of the 0.5% sulphur limit in its Marine Environmental Protection Committee (MEPC) and its subcommittee on Pollution Prevention and Response (PPR). This has led to the development on several regulatory and practical measures (FONAR's, Carriage Ban, Ship Implementation Plan etc.) to enable any non-compliance to be detected, for example during [[port state control]]s (PSC's).<ref>{{citation |url=http://www.imo.org/en/OurWork/Environment/PollutionPrevention/AirPollution/Pages/Index-of-MEPC-Resolutions-and-Guidelines-related-to-MARPOL-Annex-VI.aspx |title=Index of MEPC Resolutions and Guidelines related to MARPOL Annex VI |work=IMO |access-date=4 October 2019 |archive-date=9 August 2020 |archive-url=https://web.archive.org/web/20200809092505/http://www.imo.org/en/OurWork/Environment/PollutionPrevention/AirPollution/Pages/Index-of-MEPC-Resolutions-and-Guidelines-related-to-MARPOL-Annex-VI.aspx |url-status=dead }}</ref>

==Amendments==

MARPOL Annex VI amendments according with MEPC 176(58) came into force 1 July 2010.<ref>{{cite web |url=http://www.imo.org/includes/blastDataOnly.asp/data_id%3D23760/176%2858%29.pdf |title=MEPC 176(58) |access-date=7 February 2018 |archive-date=7 July 2009 |archive-url=http://arquivo.pt/wayback/20090707061408/http://www.imo.org/includes/blastDataOnly.asp/data_id%3D23760/176%2858%29.pdf |url-status=bot: unknown }}</ref>

Amended Regulations 12 concerns control and record keeping of Ozone Depleting Substances.<ref>{{cite web | url=http://www.ancomaritime.com/files/Ozone_Depleting_Substances_Marpol_Regulation_12.html | title=Regulations 12 | archive-url=https://web.archive.org/web/20100522170617/http://www.ancomaritime.com/files/Ozone_Depleting_Substances_Marpol_Regulation_12.html | archive-date=22 May 2010 }}</ref>

Amended Regulation 14<ref>{{cite web | url=http://www.ancomaritime.com/files/Fuel_Oil_Change_over_procedures%20.html | title=Regulation 14 | archive-url=https://web.archive.org/web/20100522170546/http://www.ancomaritime.com/files/Fuel_Oil_Change_over_procedures%20.html | archive-date=22 May 2010 }}</ref> concerns mandatory fuel oil change over procedures for vessels entering or leaving [[Sulphur Emission Control Area|SECA]] areas and FO sulphur limits.

MARPOL Annex V has been amended multiple times, changing different aspects of the original text.

MEPC.219(63) came into force on 2 March 2012 to generally prohibit the discharge of any garbage into the ocean, with the exception of food wastes, cargo residues, wash-water, and animal carcasses.<ref>{{cite web | url=http://www.imo.org/en/OurWork/Environment/PollutionPrevention/Garbage/Documents/2014%20revision/RESOLUTION%20MEPC.220(63)%20Guidelines%20for%20the%20Development%20of%20Garbage%20Management%20Plans.pdf | title=MEPC.219(63) | access-date=14 April 2018 | archive-date=14 February 2020 | archive-url=https://web.archive.org/web/20200214125601/http://www.imo.org/en/OurWork/Environment/PollutionPrevention/Garbage/Documents/2014%20revision/RESOLUTION%20MEPC.220%2863%29%20Guidelines%20for%20the%20Development%20of%20Garbage%20Management%20Plans.pdf | url-status=dead }}</ref> There are further provisions describing when and how to dispose of the acceptable wastes.

MEPC.220(63) came into force on 2 March 2012 to encourage the creation of a waste management plan on-board vessels.<ref>{{cite web | url=http://www.imo.org/en/OurWork/Environment/PollutionPrevention/Garbage/Documents/2014%20revision/RESOLUTION%20MEPC.220(63)%20Guidelines%20for%20the%20Development%20of%20Garbage%20Management%20Plans.pdf | title=MEPC.220(63) | access-date=14 April 2018 | archive-date=14 February 2020 | archive-url=https://web.archive.org/web/20200214125601/http://www.imo.org/en/OurWork/Environment/PollutionPrevention/Garbage/Documents/2014%20revision/RESOLUTION%20MEPC.220%2863%29%20Guidelines%20for%20the%20Development%20of%20Garbage%20Management%20Plans.pdf | url-status=dead }}</ref>

==Implementation and enforcement==
{{Admiralty law}}
In order for [[International Maritime Organization|IMO]] standards to be binding, they must first be ratified by a total number of member countries whose combined [[gross tonnage]] represents at least 50% of the world's gross tonnage, a process that can be lengthy.  A system of tacit acceptance has therefore been put into place, whereby, if no objections are heard from a member state after a certain period has elapsed, it is assumed they have assented to the treaty.

All six Annexes have been ratified by the requisite number of nations; the most recent is Annex VI, which took effect in May 2005. The country where a ship is registered ([[Flag State]]) is responsible for certifying the ship's compliance with MARPOL's [[Water Pollution|pollution prevention]] standards. Each signatory nation is responsible for enacting [[municipal law|domestic laws]] to implement the convention and effectively pledges to comply with the convention, annexes, and related laws of other nations.  In the United States, for example, the relevant implementation legislation is the [[Act to Prevent Pollution from Ships]].

One of the difficulties in implementing MARPOL arises from the very international nature of maritime shipping. The country that the ship visits can conduct its own examination to verify a ship's compliance with [[international standard]]s and can detain the ship if it finds significant [[regulatory compliance|noncompliance]]. When incidents occur outside such country's jurisdiction or jurisdiction cannot be determined, the country refers cases to flag states, in accordance with MARPOL. A 2000 US [[Government Accountability Office|GAO]] report documented that even when referrals have been made, the response rate from flag states has been poor.<ref name="U.S. GAO, 2000 Report">{{cite report |publisher=U. S. Government Accountability Office |title=Marine Pollution: Progress Made to Reduce Marine Pollution by Cruise Ships, but Important Issues Remain |date=7 March 2000 |issue=RCED-00-48 |page=20 |url=http://www.gao.gov/new.items/rc00048.pdf |url-status=live |archive-url=https://web.archive.org/web/20100306150933/http://www.gao.gov/new.items/rc00048.pdf |archive-date=6 March 2010}}</ref>

On 1 January 2015, [[Maritime history|maritime]] shipping levels became legally subject to new MARPOL directives because the SECA (Sulphur Emission Controlled Areas) zone increased in size. This larger SECA zone will include the [[North Sea]], [[Scandinavia]], and parts of the [[English Channel]]. This area is set to include all of the Republic of Ireland's international waters in 2020 culminating in all of Western Europe's subjection to the MARPOL directive. This has proven controversial for shipping and ferry operators across Europe.

Concerns have been raised about the environmental damage moving back to the roads by some of the larger ferry operators that ship substantial amounts of freight and passenger traffic via these routes affected by IMO standards. They claim that MARPOL will drive up ferry costs for the consumer and freight forwarding companies pushing them back onto the [[Europe]]an roadways as a financially more cost effective measure compared to increased ferry costs, thereby defeating the object of reducing water pollution.<ref name="Freightlink">{{cite web | url=https://www.freightlink.co.uk/knowledge/articles/what-marpol-and-its-impact-freight-market | title=What is MARPOL and its impact to the freight market? | archive-url=https://web.archive.org/web/20141028234749/https://www.freightlink.co.uk/knowledge/articles/what-marpol-and-its-impact-freight-market | archive-date=28 October 2014 | work=freightlink.co.uk }}</ref>

==Enforcement of MARPOL Annex VI== 
Concerns have also been raised whether the emission regulation in MARPOL Annex VI, such as the 0.5% global sulphur limit, can be enforced on international waters by non-flag States, as some ships sail under a [[flag of convenience]]. It is believed that the [[United Nations Convention on the Law of the Sea]] ([[United Nations Convention on the Law of the Sea|UNCLOS]]) allows port States to assert jurisdiction over such violations of emission regulation (also of future regulations of GHG) when they occur on the high seas. Coastal States can assert jurisdiction over violations occurring within their waters, with certain exceptions pertaining to innocent passage and the right of transit passage. The special obligations for flag States and the broadened jurisdictions for coastal and port States, to enforce MARPOL (including Annex VI) are found within the special provisions of part XII of UNCLOS.<ref>Jesper Jarl Fanø (2019). Enforcing International Maritime Legislation on Air Pollution through UNCLOS. Hart Publishing. {{ISBN|9781509927760}}</ref>

== See also ==
* [[Crude oil washing]]
* [[International Maritime Organization]]
* [[IMO Net-Zero Framework]], a proposed addition to MARPOL Annex VI
* [[Marine energy management]]
* [[Marine fuel management]]
* [[Maritime environmental crime]]
* [[Merchant Shipping (Pollution) Act 2006]]
* [[Ship pollution]]
* [[Oil Pollution Act of 1990|Oil Pollution Act van 1990]]
* [[Marpol Annex I|MARPOL Annex I]]
* [[Oily Water Separator (marine)|Oily water separator (marine)]]
* [[Oil Content Meter|Oil content meter]]
* [[Port Reception Facilities]]
* [[Port of Boulogne-sur-Mer]]

==References==
{{Reflist}}

==External links==
{{Commons category|MARPOL}}
* [http://www.imo.org/about/conventions/listofconventions/pages/international-convention-for-the-prevention-of-pollution-from-ships-(marpol).aspx International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (MARPOL 73/78)] {{Webarchive|url=https://web.archive.org/web/20120625204546/http://www.imo.org/about/conventions/listofconventions/pages/international-convention-for-the-prevention-of-pollution-from-ships-(marpol).aspx |date=25 June 2012 }}
* [http://www.ecolex.org/ecolex/ledge/view/RecordDetails;DIDPFDSIjsessionid=D9BB277000DBC9205BB8C72E4AB059F6?id=TRE-000841&index=treaties Amendments to the Annex of the Protocol of 1978 relating to the International Convention for the Prevention of Pollution from Ships] {{Webarchive|url=https://web.archive.org/web/20160308030800/http://ecolex.org/ecolex/ledge/view/recorddetails;didpfdsijsessionid=d9bb277000dbc9205bb8c72e4ab059f6?id=tre-000841&index=treaties |date=8 March 2016 }}, Treaty available in ECOLEX-the gateway to environmental law (English)
* [http://arquivo.pt/wayback/20140501034934/http://www.imo.org/OurWork/Environment/PollutionPrevention/SpecialAreasUnderMARPOL/Pages/Default.aspx IMO Overview of Emission Control Areas]

{{Pollution}}
{{Ports and harbors}}
{{Authority control}}

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[[Category:Treaties of the Marshall Islands]]
[[Category:Treaties of Mauritania]]
[[Category:Treaties of Mauritius]]
[[Category:Treaties of Mexico]]
[[Category:Treaties of Moldova]]
[[Category:Treaties of Monaco]]
[[Category:Treaties of Mongolia]]
[[Category:Treaties of Montenegro]]
[[Category:Treaties of Morocco]]
[[Category:Treaties of Mozambique]]
[[Category:Treaties of Myanmar]]
[[Category:Treaties of Namibia]]
[[Category:Treaties of the Netherlands]]
[[Category:Treaties of New Zealand]]
[[Category:Treaties of Nicaragua]]
[[Category:Treaties of Nigeria]]
[[Category:Treaties of Niue]]
[[Category:Treaties of Norway]]
[[Category:Treaties of Oman]]
[[Category:Treaties of Pakistan]]
[[Category:Treaties of Palau]]
[[Category:Treaties of Panama]]
[[Category:Treaties of Papua New Guinea]]
[[Category:Treaties of Peru]]
[[Category:Treaties of the Philippines]]
[[Category:Treaties of the Polish People's Republic]]
[[Category:Treaties of Portugal]]
[[Category:Treaties of Qatar]]
[[Category:Treaties of Romania]]
[[Category:Treaties of the Soviet Union]]
[[Category:Treaties of Saint Kitts and Nevis]]
[[Category:Treaties of Saint Lucia]]
[[Category:Treaties of Saint Vincent and the Grenadines]]
[[Category:Treaties of Samoa]]
[[Category:Treaties of São Tomé and Príncipe]]
[[Category:Treaties of Saudi Arabia]]
[[Category:Treaties of Senegal]]
[[Category:Treaties of Serbia and Montenegro]]
[[Category:Treaties of Seychelles]]
[[Category:Treaties of Singapore]]
[[Category:Treaties of Sierra Leone]]
[[Category:Treaties of Slovakia]]
[[Category:Treaties of the Solomon Islands]]
[[Category:Treaties of South Africa]]
[[Category:Treaties of Spain]]
[[Category:Treaties of Sri Lanka]]
[[Category:Treaties of Suriname]]
[[Category:Treaties of Sweden]]
[[Category:Treaties of Switzerland]]
[[Category:Treaties of Syria]]
[[Category:Treaties of Thailand]]
[[Category:Treaties of Togo]]
[[Category:Treaties of Tonga]]
[[Category:Treaties of Trinidad and Tobago]]
[[Category:Treaties of Tunisia]]
[[Category:Treaties of Turkey]]
[[Category:Treaties of Turkmenistan]]
[[Category:Treaties of Tuvalu]]
[[Category:Treaties of Ukraine]]
[[Category:Treaties of the United Arab Emirates]]
[[Category:Treaties of the United Kingdom]]
[[Category:Treaties of Tanzania]]
[[Category:Treaties of the United States]]
[[Category:Treaties of Uruguay]]
[[Category:Treaties of Vanuatu]]
[[Category:Treaties of Venezuela]]
[[Category:Treaties of Vietnam]]
[[Category:Treaties of Yugoslavia]]
[[Category:Treaties of the Libyan Arab Jamahiriya]]
[[Category:1973 in London]]
[[Category:Treaties extended to Greenland]]
[[Category:Treaties extended to the Faroe Islands]]
[[Category:Treaties extended to the Netherlands Antilles]]
[[Category:Treaties extended to Aruba]]
[[Category:Treaties extended to the Isle of Man]]
[[Category:Treaties extended to Jersey]]
[[Category:Treaties extended to the Cayman Islands]]
[[Category:Treaties extended to Bermuda]]
[[Category:Treaties extended to Gibraltar]]
[[Category:Treaties extended to the Falkland Islands]]
[[Category:Treaties extended to the British Virgin Islands]]
[[Category:Treaties extended to British Hong Kong]]
[[Category:Treaties extended to Portuguese Macau]]