International Maritime Organization
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The International Maritime Organization (IMO; ; ) is a specialized agency of the United Nations responsible for regulating
maritime transport Maritime transport (or ocean transport) or more generally waterborne transport, is the transport of people (passengers or goods (cargo) via waterways. Freight transport by watercraft has been widely used throughout recorded history, as it pr ...
. The IMO was established following agreement at a UN conference held in
Geneva Geneva ( , ; ) ; ; . is the List of cities in Switzerland, second-most populous city in Switzerland and the most populous in French-speaking Romandy. Situated in the southwest of the country, where the Rhône exits Lake Geneva, it is the ca ...
in 1948 and the IMO came into existence ten years later, meeting for the first time on 17 March 1958. Headquartered in London, United Kingdom, the IMO, in 2024, has 176 Member States and three Associate Members. The IMO's primary purpose is to develop and maintain a comprehensive regulatory framework for shipping and its remit today includes
maritime safety Maritime safety as part of and overlapping with water safety is concerned with the protection of life ( search and rescue) and property Property is a system of rights that gives people legal control of valuable things, and also refers to th ...
, environmental concerns, and legal matters, among other issues. IMO is governed by an assembly of members which meets every two years. Its finance and organization is administered by a council of 40 members elected from the assembly. The work of IMO is conducted through five committees and these are supported by technical subcommittees. Other UN organizations may observe the proceedings of the IMO. Observer status is granted to qualified NGOs. IMO is supported by a permanent secretariat of employees who are representative of the organization's members. The secretariat is composed of a
Secretary-General Secretary is a title often used in organizations to indicate a person having a certain amount of authority, Power (social and political), power, or importance in the organization. Secretaries announce important events and communicate to the org ...
who is periodically elected by the assembly, and various divisions such as those for marine safety, environmental protection and a conference section.


History

IMO was established in 1948 following a UN conference in Geneva to institutionalize the regulation of the safety of shipping into an international framework. Hitherto such international conventions had been initiated piecemeal, notably the Safety of Life at Sea Convention (SOLAS), first adopted in 1914 following the ''
Titanic RMS ''Titanic'' was a British ocean liner that sank in the early hours of 15 April 1912 as a result of striking an iceberg on her maiden voyage from Southampton, England, to New York City, United States. Of the estimated 2,224 passengers a ...
'' disaster. Under the name of the Inter-Governmental Maritime Consultative Organization (IMCO), IMO's first task was to update the SOLAS convention; the resulting 1960 convention was subsequently recast and updated in 1974 and it is that convention that has been subsequently modified and updated to adapt to changes in safety requirements and technology. Since 1978, every last Thursday of September has been celebrated as World Maritime Day, commemorating the establishment of the International Maritime Organization in 1958. When IMCO began its operations in 1959 certain other pre-existing conventions were brought under its aegis, most notable the
International Convention for the Prevention of Pollution of the Sea by Oil The International Convention for the Prevention of Pollution of the Sea by Oil (OILPOL) was an International Treaty signed in London on 12 May 1954 (OILPOL 54). It was updated in 1962 (OILPOL 62), 1969 (OILPOL 69), and 1971 (OILPOL 71). OILPOL w ...
(OILPOL) 1954. In January 1959, IMO began to maintain and promote the 1954 OILPOL Convention. Under the guidance of IMO, the convention was amended in 1962, 1969, and 1971. The first meetings of the newly formed IMCO were held in London in 1959. As oil trade and industry developed, many people in the industry saw a need for further improvements in regards to oil pollution prevention at sea. This became increasingly apparent in 1967, when the tanker '' Torrey Canyon'' spilled 120,000 tons of crude oil when it ran aground entering the English Channel The ''Torrey Canyon'' grounding was the largest oil pollution incident recorded up to that time. This incident prompted a series of new conventions. IMO held an emergency session of its council to deal with the need to readdress regulations pertaining to maritime pollution. In 1969, the IMO Assembly decided to host an international gathering in 1973 dedicated to this issue. The goal at hand was to develop an international agreement for controlling general environmental contamination by ships when out at sea. During the next few years IMO brought to the forefront a series of measures designed to prevent large ship accidents and to minimize their effects. It also detailed how to deal with the environmental threat caused by routine ship duties such as the cleaning of oil cargo tanks or the disposal of engine room wastes. By tonnage, the aforementioned was a bigger problem than accidental pollution. The most significant development to come out of this conference was the International Convention for the Prevention of Pollution from Ships, 1973 (MARPOL). It covers not only accidental and operational oil pollution but also different types of pollution by chemicals, goods in packaged form, sewage, garbage and air pollution. The original MARPOL was signed on 17 February 1973, but did not come into force due to lack of ratifications. The current convention is a combination of 1973 Convention and the 1978 Protocol. It entered into force on 2 October 1983. As of January 2018, 156 states, representing 99.42 per cent of the world's shipping tonnage, are signatories to the MARPOL convention. As well as updates to MARPOL and SOLAS, the IMO facilitated several updated international maritime conventions in the mid to late 20th century, including the International Convention on Load Lines in 1966 (replacing an earlier 1930 Convention), the
International Regulations for Preventing Collisions 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" o ...
in 1972 (also replacing an earlier set of rules) and the
STCW Convention International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW) sets minimum qualification standards for masters, officers and watch personnel on seagoing merchant ships and large yachts. STCW was adop ...
in 1978. In 1975, the assembly of the IMO decided that future conventions of the
International Convention for the Safety of Life at Sea The International Convention for the Safety of Life at Sea (SOLAS) is an international maritime treaty which sets out minimum safety standards in the construction, equipment and operation of merchant ships. The International Maritime Organiza ...
(SOLAS) and other IMO instruments should use SI units only. As such, sea transportation is one of few industrial areas that still commonly uses non-
metric units Metric units are units based on the metre, gram or second and decimal (power of ten) multiples or sub-multiples of these. According to Schadow and McDonald, metric units, in general, are those units "defined 'in the spirit' of the metric system, ...
such as the
nautical mile A nautical mile is a unit of length used in air, marine, and space navigation, and for the definition of territorial waters. Historically, it was defined as the meridian arc length corresponding to one minute ( of a degree) of latitude at t ...
(nmi) for distance and
knots A knot is a fastening in rope or interwoven lines. Knot or knots may also refer to: Other common meanings * Knot (unit), of speed * Knot (wood), a timber imperfection Arts, entertainment, and media Films * ''Knots'' (film), a 2004 film * ''Kn ...
(kn) for speed or velocity. In 1982, IMCO was renamed as the International Maritime Organization (IMO). Throughout its existence, the IMO has continued to produce new and updated conventions across a wide range of maritime issues covering not only safety of life and marine pollution but also encompassing safe navigation, search and rescue, wreck removal, tonnage measurement, liability and compensation, ship recycling, the training and certification of seafarers, and piracy. More recently SOLAS has been amended to bring an increased focus on maritime security through the International Ship and Port Facility Security (ISPS) Code. The IMO has also increased its focus on smoke emissions from ships. In 1983, the IMO established the
World Maritime University The World Maritime University (WMU), in Malmö, Sweden, is a postgraduate maritime university founded within the framework of the International Maritime Organization (IMO)—a specialized agency of the United Nations. Established by an IMO Ass ...
in Malmö, Sweden and also facilitated the adoption of the
IGC Code The International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk, often referred and abbreviated as the IGC Code, is the International Maritime Organization (IMO) standard concerning the cargo carriage of liquefi ...
. In 1991, the IMO facilitated the adoption of the International Grain Code. In December 2002, new amendments to the 1974 SOLAS Convention were enacted by the IMO. These amendments gave rise to the International Ship and Port Facility Security (ISPS) Code, which went into effect on 1 July 2004. The concept of the code is to provide layered and redundant defences against smuggling, terrorism, piracy, stowaways, etc. The ISPS Code required most ships and port facilities engaged in international trade to establish and maintain strict security procedures as specified in ship and port specific Ship Security Plans and Port Facility Security Plans.


Headquarters

The IMO headquarters are located in a large purpose-built building facing the
River Thames The River Thames ( ), known alternatively in parts as the The Isis, River Isis, is a river that flows through southern England including London. At , it is the longest river entirely in England and the Longest rivers of the United Kingdom, s ...
on the
Albert Embankment Albert Embankment is part of the river bank on the south side of the River Thames in Central London. It stretches approximately one mile (1.6 km) northward from Vauxhall Bridge to Westminster Bridge, and is located in the London Borough ...
, in
Lambeth Lambeth () is a district in South London, England, which today also gives its name to the (much larger) London Borough of Lambeth. Lambeth itself was an ancient parish in the county of Surrey. It is situated 1 mile (1.6 km) south of Charin ...
, London. The organization moved into its new headquarters in late 1982, with the building being officially opened by
Queen Elizabeth II Elizabeth II (Elizabeth Alexandra Mary; 21 April 19268 September 2022) was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until Death and state funeral of Elizabeth II, her death in 2022. ...
on 17 May 1983. The architects of the building were Douglass Marriott, Worby & Robinson. The front of the building is dominated by a seven-metre high, ten-tonne bronze sculpture of the bow of a ship, with a lone seafarer maintaining a look-out. The previous headquarters of IMO were at 101
Piccadilly Piccadilly () is a road in the City of Westminster, London, England, to the south of Mayfair, between Hyde Park Corner in the west and Piccadilly Circus in the east. It is part of the A4 road (England), A4 road that connects central London to ...
(now the home of the Embassy of Japan), prior to that at 22 Berners Street in
Fitzrovia Fitzrovia ( ) is a district of central London, England, near the West End. Its eastern part is in the London Borough of Camden, and the western in the City of Westminster. It has its roots in the Manor of Tottenham Court, and was urbanised in ...
and originally in
Chancery Lane Chancery Lane is a one-way street that forms part of the City of London#Boundary, western boundary of the City of London. The east side of the street is entirely within the City, The organization is led by a Secretary-General. A number of Sub-Committees support the work of the main technical committees.


Governance of IMO

The governing body of the International Maritime Organization is the Assembly which meets every two years. In between Assembly sessions a Council, consisting of 40 Member States elected by the Assembly, acts as the governing body. The technical work of the International Maritime Organization is carried out by a series of Committees. The Secretariat consists of some 300 international civil servants headed by a Secretary-General. The current Secretary-General is
Arsenio Dominguez who took office for a four year term on 1 January 2024, having been elected in July 2023. The previous Secretary-General was Kitack Lim from South Korea elected for a four-year term at the 114th session of the IMO Council in June 2015 and at the 29th session of the IMO's Assembly in November 2015. His mandate started on 1 January 2016. At the 31st session of the Assembly in 2019 he was re-appointed for a second term, ending on 31 December 2023.Personal Page of the Secretary-General
, accessed: 9 July 2020
Press-Briefing "Positional changes at IMO Secretariat"
, accessed: 30 January 2012


Technical committees

The technical work of the International Maritime Organization is carried out by five principal Committees. These include: * The Maritime Safety Committee (MSC) * The Marine environment Protection Committee (MEPC) * The Legal Committee * The Technical Cooperation Committee, for
capacity building Capacity building (or capacity development, capacity strengthening) is the improvement in an individual's or organization's facility (or capability) "to produce, perform or deploy". The terms capacity building and capacity development have often ...
* The Facilitation Committee, to simplify the documentation and formalities required in international shipping. The Committees meet once or twice a year attended by Member States and NGOs.


Maritime Safety Committee

It is regulated in the Article 28(a) of the Convention on the IMO: The Maritime Safety Committee is the most senior of these and is the main Technical Committee; it oversees the work of its nine sub-committees and initiates new topics. One broad topic it deals with is the effect of the human element on
casualties A casualty (), as a term in military usage, is a person in military service, combatant or non-combatant, who becomes unavailable for duty due to any of several circumstances, including death, injury, illness, missing, capture or desertion. In c ...
; this work has been put to all of the sub-committees, but meanwhile, the Maritime Safety Committee has developed a code for the management of ships which will ensure that agreed operational procedures are in place and followed by the ship and shore-side staff.


Sub-Committees

The MSC and MEPC are assisted in their work by a number of sub-committees which are open to all Member States. The committees are: * Sub-Committee on Human Element, Training and Watchkeeping (HTW) * Sub-Committee on Implementation of IMO Instruments (III) * Sub-Committee on Navigation, Communications and Search and Rescue (NCSR) * Sub-Committee on Pollution Prevention and Response (PPR) * Sub-Committee on Ship Design and Construction (SDC) * Sub-Committee on Ship Systems and Equipment (SSE) * Sub-Committee on Carriage of Cargoes and Containers (CCC). The names of the IMO sub-committees were changed in 2013. Prior to 2013 there were nine Sub-Committees as follows: * Bulk Liquids and Gases (BLG) * Carriage of Dangerous Goods, Solid Cargoes and Containers(DSC) * Fire Protection (FP) * Radio-communications and Search and Rescue (COMSAR) * Safety of Navigation (NAV) * Ship Design and Equipment (DE) * Stability and Load Lines and Fishing Vessels Safety (SLF) * Standards of Training and Watchkeeping (STW) * Flag State Implementation (FSI)


Membership

To become a member of the IMO, a state ratifies a multilateral treaty known as the ''Convention on the International Maritime Organization''. As of 2024, there are 176 member states of the IMO, which includes 175 of the UN member states plus the
Cook Islands The Cook Islands is an island country in Polynesia, part of Oceania in the South Pacific Ocean. It consists of 15 islands whose total land area is approximately . The Cook Islands' Exclusive Economic Zone (EEZ) covers of ocean. Avarua is its ...
. The first state to ratify the convention was Canada in 1948. These are the current members with the year they joined: * (1993) * (1963) * (1977) * (1986) * (1953) * (2018) * (1952) * (1975) * (1995) * (1976) * (1976) * (1976) * (1970) * (2016) * (1951) * (1990) * (1980) * (1987) * (1993) * (2021) * (1963) * (1984) * (1960) * (1976) * (1961) * (1961) * (1948) * (1972) * (1973) * (1974) * (2001) * (1975) * (2008) * (1981) * (1960) * (1992) * (1966) * (1973) * (1993) * (1986) * (1973) * (1959) * (1979) * (1979) * (1953) * (1956) * (1958) * (1981) * (1972) * (1993) * (1992) * (1975) * (1983) * (1959) * (1952) * (1976) * (1979) * (1993) * (1959) * (1959) * (1958) * (1998) * (1983) * (1975) * (1977) * (1980) * (1953) * (1954) * (1970) * (1960) * (1959) * (1961) * (1958) * (1973) * (1951) * (1952) * (1957) * (1976) * (1958) * (1973) * (1994) * (1973) * (2003) * (1960) * (2024) * (1993) * (1966) * (1959) * (1970) * (1995) * (1991) * (1961) * (1989) * (1971) * (1967) * (1966) * (1998) * (1961) * (1978) * (1954) * (1989) * (1996) * (2006) * (1962) * (1979) * (1951) * (1994) * (2018) * (1979) * (1949) * (1960) * (1982) * (1962) * (1993) * (1958) * (1974) * (1958) * (2011) * (1958) * (1976) * (1993) * (1968) * (1964) * (1960) * (1976) * (1977) * (1962) * (2001) * (1965) * (1958) * (2001) * (1980) * (1981) * (1996) * (2002) * (1990) * (1969) * (1960) * (2000) * (1978) * (1973) * (1966) * (1993) * (1993) * (1988) * (1978) * (1995) * (1962) * (1972) * (1974) * (1976) * (1959) * (1955) *
Syria Syria, officially the Syrian Arab Republic, is a country in West Asia located in the Eastern Mediterranean and the Levant. It borders the Mediterranean Sea to the west, Turkey to Syria–Turkey border, the north, Iraq to Iraq–Syria border, t ...
(1963) * (1974) * (1973) * (2005) * (1983) * (2000) * (1965) * (1963) * (1958) * (1993) * (2004) * (2009) * (1994) * (1980) * (1949) * (1950) * (1968) * (1986) * (1975) * (1984) * (1979) * (2014) * (2005) The three associate members of the IMO are the
Faroe Islands The Faroe Islands ( ) (alt. the Faroes) are an archipelago in the North Atlantic Ocean and an autonomous territory of the Danish Realm, Kingdom of Denmark. Located between Iceland, Norway, and the United Kingdom, the islands have a populat ...
,
Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...
and
Macau Macau or Macao is a special administrative regions of China, special administrative region of the People's Republic of China (PRC). With a population of about people and a land area of , it is the most List of countries and dependencies by p ...
. In 1961, the territories of
Sabah Sabah () is a States and federal territories of Malaysia, state of Malaysia located in northern Borneo, in the region of East Malaysia. Sabah has land borders with the Malaysian state of Sarawak to the southwest and Indonesia's North Kalima ...
and
Sarawak Sarawak ( , ) is a States and federal territories of Malaysia, state of Malaysia. It is the largest among the 13 states, with an area almost equal to that of Peninsular Malaysia. Sarawak is located in East Malaysia in northwest Borneo, and is ...
, which had been included through the participation of United Kingdom, became joint associate members. In 1963 they became part of
Malaysia Malaysia is a country in Southeast Asia. Featuring the Tanjung Piai, southernmost point of continental Eurasia, it is a federation, federal constitutional monarchy consisting of States and federal territories of Malaysia, 13 states and thre ...
. The most recent members to join were
Armenia Armenia, officially the Republic of Armenia, is a landlocked country in the Armenian Highlands of West Asia. It is a part of the Caucasus region and is bordered by Turkey to the west, Georgia (country), Georgia to the north and Azerbaijan to ...
and
Nauru Nauru, officially the Republic of Nauru, formerly known as Pleasant Island, is an island country and microstate in the South Pacific Ocean. It lies within the Micronesia subregion of Oceania, with its nearest neighbour being Banaba (part of ...
(which became IMO members in January and May 2018, respectively).
Botswana Botswana, officially the Republic of Botswana, is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory part of the Kalahari Desert. It is bordered by South Africa to the sou ...
, joined the IMO in October 2021. On 27 February 2024,
Kyrgyzstan Kyrgyzstan, officially the Kyrgyz Republic, is a landlocked country in Central Asia lying in the Tian Shan and Pamir Mountains, Pamir mountain ranges. Bishkek is the Capital city, capital and List of cities in Kyrgyzstan, largest city. Kyrgyz ...
became the 176th Member State of the organization. Most UN member states that are not members of IMO are landlocked countries. These include Afghanistan, Andorra, Bhutan, Burkina Faso, Burundi, Central African Republic, Chad, Eswatini, Laos, Lesotho, Liechtenstein, Mali, Niger, Rwanda, South Sudan, Tajikistan and Uzbekistan. The
Federated States of Micronesia The Federated States of Micronesia (, abbreviated FSM), or simply Micronesia, is an island country in Micronesia, a region of Oceania. The federation encompasses the majority of the Caroline Islands (excluding Palau) and consists of four Admin ...
, an island-nation in the Pacific Ocean, is also a non-member.
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...
is neither a member of the IMO nor of the UN, although it has a major shipping industry.


Legal instruments

IMO is the source of approximately 60 legal instruments that guide the regulatory development of its member states to improve safety at sea, facilitate trade among seafaring states and protect the maritime environment. The most well known is the
International Convention for the Safety of Life at Sea The International Convention for the Safety of Life at Sea (SOLAS) is an international maritime treaty which sets out minimum safety standards in the construction, equipment and operation of merchant ships. The International Maritime Organiza ...
(SOLAS), as well as International Convention for the Prevention of Pollution from Ships (MARPOL). Others include the International Oil Pollution Compensation Funds (IOPC). It also functions as a depository of yet to be ratified treaties, such as the International Convention on Liability and Compensation for Damage in Connection with the Carriage of Hazardous and Noxious Substances by Sea, 1996 (
HNS Convention The HNS Convention (Hazardous and Noxious Substances by Sea Convention) is an international convention created in 1996 to compensate for damages caused by spillage of hazardous and noxious substances during maritime transportation. The conventio ...
) and Nairobi International Convention of Removal of Wrecks (2007). IMO regularly enacts regulations, which are broadly enforced by national and local maritime authorities in member countries, such as the
International Regulations for Preventing Collisions 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" o ...
(COLREG). The IMO has also enacted a
Port state control Port state control (PSC) is an inspection regime for countries to inspect foreign-registered ships in port other than those of the flag state and take action against ships that are not in compliance. Inspectors for PSC are called PSC officers ( ...
(PSC) authority, allowing domestic maritime authorities such as
coast guard A coast guard or coastguard is a Maritime Security Regimes, maritime security organization of a particular country. The term embraces wide range of responsibilities in different countries, from being a heavily armed military force with cust ...
s to inspect foreign-flag ships calling at ports of the many port states. Memoranda of Understanding (protocols) were signed by some countries unifying Port State Control procedures among the signatories. Conventions, Codes and Regulations: * MARPOL Convention ** Marpol Annex I *
SOLAS Convention The International Convention for the Safety of Life at Sea (SOLAS) is an international maritime treaty which sets out minimum safety standards in the construction, equipment and operation of merchant ships. The International Maritime Organizat ...
** IMDG Code ** ISM Code **
ISPS Code The International Ship and Port Facility Security (ISPS) Code is an amendment to the International Convention for the Safety of Life at Sea, Safety of Life at Sea (SOLAS) Convention (1974/1988) on Maritime security including minimum security ...
** Polar Code ** IGF Code **
IGC Code The International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk, often referred and abbreviated as the IGC Code, is the International Maritime Organization (IMO) standard concerning the cargo carriage of liquefi ...
** IBC Code ** TDC Code **
International Code on Intact Stability The International Code on Intact Stability (IS Code) is the International Maritime Organization (IMO) standard for ship stability Ship stability is an area of naval architecture and ship design that deals with how a ship behaves at sea, both in ...
** INF Code ** International Grain Code ** IMSBC Code *
STCW Convention International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW) sets minimum qualification standards for masters, officers and watch personnel on seagoing merchant ships and large yachts. STCW was adop ...
*
International Code of Signals The International Code of Signals (INTERCO) is an international system of signals and codes for use by vessels to communicate important messages regarding safety of navigation and related matters. Signals can be sent by flaghoist, signal lamp ...
mandatory for carriage on ships and used for communications between all ships, including merchant vessels and naval vessels * International Ballast Water Management Convention (BWM Convention) * International Convention on Civil Liability for Oil Pollution Damage (CLC Convention) * International Convention on Maritime Search and Rescue (SAR Convention) * International Convention on Oil Pollution Preparedness, Response and Co-operation (OPRC) *
HNS Convention The HNS Convention (Hazardous and Noxious Substances by Sea Convention) is an international convention created in 1996 to compensate for damages caused by spillage of hazardous and noxious substances during maritime transportation. The conventio ...
*
International Regulations for Preventing Collisions 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" o ...
(COLREG) * International Convention on Load Lines (CLL) * International Convention on the Establishment of an International Fund for Compensation for Oil Pollution Damage (FUND92) * Convention for the Suppression of Unlawful Acts against the Safety of Maritime Navigation (SUA Convention) * International Convention on the Control of Harmful Anti-fouling Systems on Ships (AFS Convention) * Athens Convention (PAL) * Nairobi International Convention on the Removal of Wrecks * Convention on Facilitation of International Maritime Traffic *The Casualty Investigation Codeenacted through Resolution MSC.255(84), of 16 May 2008. The full title is ''Code of the International Standards and Recommended Practices for a Safety Investigation into a maritime casualty or incident''.


Current priorities

Recent initiatives at the IMO have included amendments to SOLAS, which among other things, included upgraded
fire protection Fire protection is the study and practice of mitigating the unwanted effects of potentially Conflagration, destructive fires. It involves the study of the behaviour, Compartmentalization (fire protection), compartmentalisation, suppression and inve ...
standards on
passenger ship A passenger ship is a merchant ship whose primary function is to carry passengers on the sea. The category does not include cargo vessels which have accommodations for limited numbers of passengers, such as the ubiquitous twelve-passenger freig ...
s, the International Convention on Standards of Training, Certification and Watchkeeping for Seamen (STCW) which establishes basic requirements on training, certification and watchkeeping for seafarers and to the Convention on the Prevention of Maritime Pollution (
MARPOL 73/78 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 environmental conventions. It ...
), which required double hulls on all tankers. The IMO's e-Navigation system has harmonized marine navigation systems with supporting shore services, as available to seamen and shore-side traffic services called. An e-Navigation strategy was ratified in 2005, and an implementation plan was developed through three IMO sub-committees. The plan was completed by 2014 and implemented in November of that year. IMO has also served as a key partner and enabler of US international and interagency efforts to establish
maritime domain awareness Maritime domain awareness (MDA) is defined by the International Maritime Organization as the effective understanding of anything associated with the maritime domain that could impact the security, safety, economy, or environment. MDA is said to ...
.


Environmental issues

The IMO has a role in tackling international
climate change Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in ...
. The First Intersessional Meeting of IMO's Working Group on Greenhouse Gas Emissions from Ships took place in Oslo, Norway (23–27 June 2008), tasked with developing the technical basis for the reduction mechanisms that may form part of a future IMO regime to control
greenhouse gas emissions Greenhouse gas (GHG) emissions from human activities intensify the greenhouse effect. This contributes to climate change. Carbon dioxide (), from burning fossil fuels such as coal, petroleum, oil, and natural gas, is the main cause of climate chan ...
from international shipping, and a draft of the actual reduction mechanisms themselves, for further consideration by IMO's Marine Environment Protection Committee (MEPC). The IMO participated in the
2015 United Nations Climate Change Conference The 2015 United Nations Climate Change Conference, COP 21 or CMP 11 was held in Paris, France, from 30 November to 12 December 2015. It was the 21st yearly session of the United Nations Climate Change conference, Conference of the Parties (COP) ...
in Paris seeking to establish itself as the "appropriate international body to address greenhouse gas emissions from ships engaged in international trade". Nonetheless, there has been widespread criticism of the IMO's relative inaction since the conclusion of the Paris conference, with the initial data-gathering step of a three-stage process to reduce maritime greenhouse emissions expected to last until 2020. In 2018, the
Initial IMO Strategy on the reduction of GHG emissions from ships The Initial IMO Strategy on the reduction of GHG emissions from ships, or Initial IMO GHG Strategy, is the framework through which the International Maritime Organization (IMO) aims to reduce Greenhouse gas emissions, greenhouse gas (GHG) emission ...
was adopted. In 2021, ''The New York Times'' wrote that the IMO "has repeatedly delayed and watered down climate regulations". The IMO has also taken action to mitigate the global effects of ballast water and sediment discharge, through the 2004 Ballast Water Management Convention, which entered into force in September 2017. In December 2023 the IMO adopted a resolution targeting "dark fleet" tankers that form a risk by undertaking illegal and unsafe activities at sea. Primarily working for Iran and Russia to breach international sanctions, the tankers, many of which are elderly and unreliable, often undertake mid ocean transfers in an attempt to evade sanctions. The resolution calls upon flag states to “adhere to measures which lawfully prohibit or regulate” the transfer of cargoes at sea, known as ship-to-ship transfers. In April 2025, the IMO's Marine Environment Protection Committee (MEPC) approved net-zero regulations for the global shipping industry to reach net-zero GHG emissions in the shipping industry by or around 2050.


Fishing safety

The IMO Cape Town Agreement is an international International Maritime Organization legal instrument established in 2012, that sets out minimum safety requirements for fishing vessels of 24 metres in length and over or equivalent in gross tons. As of 2022, the Agreement is not yet in force but the IMO is encouraging more member States to ratify the Agreement.


See also

* Active Shipbuilding Experts' Federation *
IMO number The IMO number of the International Maritime Organization is a generic term with two distinct applications: * the IMO ship identification number is a unique ship identifier; or, * the IMO company and registered owner identification number is u ...
*
International Hydrographic Organization The International Hydrographic Organization (IHO) (French: ''Organisation Hydrographique Internationale'') is an intergovernmental organization representing hydrography. the IHO comprised 102 member states. A principal aim of the IHO is to ...
* International Maritime Law Institute * International Maritime Rescue Federation *
United Nations Convention on the Law of the Sea The United Nations Convention on the Law of the Sea (UNCLOS), also called the Law of the Sea Convention or the Law of the Sea Treaty, is an international treaty that establishes a legal framework for all marine and maritime activities. , 169 sov ...
*
Standard Marine Communication Phrases The Standard Marine Communication Phrases (SMCP) is a set of key phrases in the English language (which is the internationally recognised language of the sea), supported by the international community for use at sea and developed by the Internation ...
developed by the IMO, to improve safety at sea * NAVAREA


Notes and references


Further reading

* * * *


External links

* {{Authority control International organisations based in London International water transport Organisations based in the London Borough of Lambeth Organizations established in 1948 United Nations specialized agencies Water transport organizations United Kingdom and the United Nations