SUMMARY OF IMO CONVENTIONS
The following materials were printed with the permission of the International Maritime Organization.International Conventions
Liability and Compensation
International ConventionsThe industrial revolution of the eighteenth and nineteenth centuries and the upsurge in international commerce which resulted led to the adoption of a number of international treaties related to shipping, including safety. The subjects covered included tonnage measurement, the prevention of collisions, signaling and others.
By the end of the nineteenth century suggestions had even been made for the creation of a permanent international maritime body to deal with these and future measures. The plan was not put into effect, but international cooperation continued in the twentieth century, with the adoption of still more internationally developed treaties.
By the time IMO came into existence in 1958, several important international conventions* had already been developed, including the International Convention for the Safety of Life at Sea of 1948, the International Convention for the Prevention of Pollution of the Sea by Oil of 1954 and treaties dealing with load lines and the prevention of collisions at sea.
IMO was made responsible for ensuring that the majority of these conventions were kept up to date. It was also given the task of developing new conventions as and when the need arose.
The creation of IMO coincided with a period of tremendous change in world shipping and the Organization was kept busy from the start developing new conventions and ensuring that existing instruments kept pace with changes in shipping technology. It is now responsible for 35 international conventions and agreements and has adopted numerous protocols and amendments.
Adopting a Convention
This is the part of the process with which IMO as an organization is most closely involved. IMO has six main bodies concerned with the adoption or implementation of conventions. The Assembly and Council are the main organs, and the committees involved are the Maritime Safety Committee, Marine Environment Protection Committee, Legal Committee and the Facilitation Committee. Developments in shipping and other related industries are discussed by Member States in these bodies, and the need for a new convention or amendments to existing conventions can be raised in any of them.
Normally the suggestion is first made in one of the committees, since these meet more frequently than the main organs. If agreement is reached in the committee, the proposal goes to the Council and, as necessary, to the Assembly.
If the Assembly or the Council, as the case may be, gives the authorization to proceed with the work, the committee concerned considers the matter in greater detail and ultimately draws up a draft instrument. In some cases the subject may be referred to a specialized sub-committee for detailed consideration.
Work in the committees and sub-committees is undertaken by the representatives of Member States of the Organization. The views and advice of intergovernmental and international non-governmental organizations which have a working relationship with IMO are also welcomed in these bodies. Many of these organizations have direct experience in the various matters under consideration, and are therefore able to assist the work of IMO in practical ways.
The draft convention which is agreed upon is reported to the Council and Assembly with a recommendation that a conference be convened to consider the draft for formal adoption.
Invitations to attend such a conference are sent to all Member States of IMO and also to all States which are members of the United Nations or any of its specialized agencies. These conferences are therefore truly global conferences open to all Governments who would normally participate in a United Nations conference.
All Governments participate on an equal footing. In addition, organizations of the United Nations system and organizations in official relationship with IMO are invited to send observers to the conference to give the benefit of their expert advice to the representatives of Governments.
Before the conference opens, the draft convention is circulated to the invited Governments and organizations for their comments. The draft convention, together with the comments thereon from Governments and interested organizations is then closely examined by the conference and necessary changes are made in order to produce a draft acceptable to all or the majority of the Governments present. The convention thus agreed upon is then adopted by the conference and deposited with the Secretary-General who sends copies to Governments. The convention is opened for signature by States, usually for a period of 12 months. Signatories may ratify or accept the convention while non-signatories may accede.
The drafting and adoption of a convention in IMO can take several years to complete although in some cases, where a quick response is required to deal with an emergency situation, Governments have been willing to accelerate this process considerably.Entry into Force
The adoption of a convention marks the conclusion of only the first stage of a long process. Before the convention comes into force - that is, before it becomes binding upon Governments which have ratified it - it has to be accepted formally by individual Governments.
Each convention includes appropriate provisions stipulating conditions which have to be met before it enters into force. These conditions vary but, generally speaking, the more important and more complex the document, the more stringent are the conditions for its entry into force. For example, the International Convention for the Safety of Life at Sea, 1974, provided that entry into force requires acceptance by 25 States whose merchant fleets comprise not less than 50 percent of the worlds gross tonnage; for the International Convention on Tonnage Measurement of Ships, 1969, the requirement was acceptance by 25 States whose combined merchant fleets represent not less than 65 percent of world tonnage.
When the appropriate conditions have been fulfilled, the convention enters into force for the States which have accepted - generally after a period of grace intended to enable all the States to take the necessary measures for implementation.
In the case of some conventions which affect a few States or deal with less complex matters, the entry into force requirements may not be so stringent. For example, the Convention Relating to Civil Liability in the Field of Maritime Carriage of Nuclear Material, 1971, came into force 90 days after being accepted by five States; the Special Trade Passenger Ships Agreement, 1971, came into force six months after three States (including two with ships or nationals involved in special trades) had accepted it.
For the important technical conventions, it is necessary that they be accepted and applied by a large section of the shipping community. It is therefore essential that these should, upon entry into force, be applicable to as many of the maritime states as possible. Otherwise they would tend to confuse, rather than clarify, shipping practice since their provisions would not apply to a significant proportion of the ship they were intended to deal with.
Accepting a convention does not merely involve the deposit of a formal instrument. A Governments acceptance of a convention necessarily places on it the obligation to take the measures required by the convention. Often national law has to be enacted or changed to enforce the provisions of the convention; in some case, special facilities may have to be provided; an inspectorate may have to be appointed or trained to carry out the functions under the convention; and adequate notice must be given to ship owners, shipbuilders and other interested parties so they make take account of the provisions of the convention in their future acts and plans.
At present IMO conventions enter into force within an average of five years after adoption. The majority of these instruments are now in force or are on the verge of fulfilling requirements for entry into force.Amendment
Technology and techniques in the shipping industry change very rapidly these days. As a result, not only are new conventions required but existing ones need to be kept up to date. For example, the International Convention for the Safety of Life at Sea (SOLAS), 1960 was amended six times after it entered into force in 1965 - in 1966, 1967, 1968, 1969, 1971 and 1973. In 1974 a completely new convention was adopted incorporating all these amendments (and other minor changes) and was itself modified (in 1978, 1981, 1983, 1988, 1990 and 1991).
In early conventions, amendments came into force only after a percentage of Contracting States, usually two thirds, had accepted them. This normally meant that more acceptances were required to amend a convention than were originally required to bring it into force in the first place, especially where the number of States which are Parties to a convention is very large.
This percentage requirement in practice led to long delays in bringing amendments into force. To remedy the situation a new amendment procedure was devised in IMO. This procedure has been used in the case of conventions such as the Convention on the International Regulations for Preventing Collisions at Sea, 1972, the International Convention for the Prevention of Pollution from Ships, 1973 and SOLAS 1974, all of which incorporate a procedure involving the "tacit acceptance" of amendments by States.
Instead of requiring that an amendment shall enter into force after being accepted by, for example, two thirds of the Parties, the new procedure provides that an amendment shall enter into force at a particular time unless, before that date, objections to the amendment are received from a specified number of Parties.
In the case of the 1974 SOLAS Convention, an amendment to most of the Annexes (which constitute the technical parts of the Convention) is deemed to have been accepted at the end of two years from the date on which it is communicated to Contracting Governments... unless the amendment is objected to by more than one third of Contracting Governments, or Contracting Governments owning not less than 50 percent of the worlds gross merchant tonnage. This period may be varied by the Maritime Safety Committee with a minimum limit of one year.
As was expected the "tacit acceptance" procedure has greatly speeded up the amendment process. The 1981 amendments to SOLAS 1974, for example, entered into force on 1 September 1984. Compared to this, none of the amendments adopted to the 1960 SOLAS Convention between 1966 and 1973 received sufficient acceptances to satisfy the requirements for entry into force.Enforcement
The enforcement of IMO conventions depends upon the Governments of Member Parties. The Organization has no powers in this respect.
Contracting Governments enforce the provisions of IMO conventions as far as their own ships are concerned and also set the penalties for infringements, where these are applicable. They may also have certain limited powers in respect of the ships of other Governments.
In some conventions, certificates are required to be carried on board ship to show that they have been inspected and have met the required standards. These certificates are normally accepted as proof by authorities from other States that the vessel concerned has reached the required standard, but in some cases further action can be taken.
The 1974 SOLAS Convention, for example, states that the officer carrying out the control shall take such steps as will ensure that the ship shall not sail until it can proceed to sea without danger to the passengers or the crew'.
This can be done if there are clear grounds for believing that the condition of the ship and its equipment does not correspond substantially with the particulars of that certificate.
An inspection of this nature would, of course, take place within the jurisdiction of the port State. But when an offence occurs in international waters the responsibility for imposing a penalty rests with the flag State.
Should an offence occur within the jurisdiction of another State, however, that State can either cause proceedings to be taken in accordance with its own law or give details of the offence to the flag State so that the latter can take appropriate action. Under the terms of the 1969 Convention Relating to Intervention on the High Seas, Contracting States are empowered to act against ships of other countries which have been involved in an accident or have been damaged on the high seas if there is a grave risk of oil pollution occurring as a result.
The way in which these powers may be used are very carefully defined, and in most conventions the flag State is primarily responsible for enforcing conventions as far as its own ships and their personnel are concerned.
The majority of conventions adopted under the auspices of IMO or for which the Organization is otherwise responsible fall into three main categories.Maritime Safety
The first group is concerned with maritime safety; the second with the prevention of marine pollution; and the third with liability and compensation, especially in relation to damage caused by pollution. Outside these major groupings are a number of other conventions dealing with facilitation, tonnage measurement, unlawful acts against shipping and salvage.International Convention for the Safety of Life at Sea, 1960 and 1974
Adoption: 17 June 1960
Entry into force: 26 May 1965
Adoption: 1 November 1974
Entry into force: 25 May 1980
The SOLAS Convention in its successive forms is generally regarded as the most important of all international treaties concerning the safety of merchant ships. The first version was adopted in 1914, the second in 1929 and the third in 1948.
The 1960 Convention was the first major task for IMO after its creation and it represented a considerable step forward in modernizing regulations and in keeping pace with technical developments in the shipping industry.
The intention was to keep the Convention up to date by periodic amendments but in practice the amendments procedure incorporated proved to be very slow. It became clear that it would be impossible to secure the entry into force of amendments within a reasonable period of time.
The 1974 Convention
As a result, a completely new convention was adopted in 1974 which included not only the amendments agreed up until that date but a new amendment procedure designed to ensure that changes could be made with a specified (and acceptably short) period of time.
The main objective of the SOLAS Convention is to specify minimum standards for the construction, equipment and operation of ships, compatible with their safety. Flag States are responsible for ensuring that ships under their flag comply with its requirements, and a number of certificates are prescribed in the Convention as proo that this has been done.
Control provisions also allow Contracting Governments to inspect ships of other Contracting States if there are clear grounds for believing that the ship and its equipment do not substantially comply with the requirements of the Convention.
General provisions are contained in chapter I, the most important of them concerning the survey of the various types of ships and the issuing of documents signifying that the ship meets the requirements of the Convention. The chapter also includes provisions for the control of ships in ports of other Contracting Governments.
Subdivision and stability are dealt within chapter II-1. The subdivision of passenger ships into watertight compartments must be such that after assumed damage to the ships hull the vessel will remain afloat and stable. Requirements for watertight integrity and bilge pumping arrangements for passenger ships are also laid down as well as stability requirements for both passenger and cargo ships.
The degree of subdivision - measured by the maximum permissible distance between two adjacent bulkheads - varies with ships length and the service in which it is engaged. The highest degree of subdivision applies to passenger ships.
Machinery and electrical installations: these requirements, contained in chapter II-1, are designed to ensure that services which are essential for the safety of the ship, passengers and crew are maintained under various emergency conditions. The steering gear requirements of this chapter are particularly important.
Fire protection, fire detection and fire extinction: casualties to passenger ships through fire emphasized the need to improve the fire protection provisions of the 1960 Convention, and in 1966 and 1967 amendments were adopted by the IMO Assembly. These and other amendments, particularly detailed fire safety provisions for tankers and combination carriers, such as inert gas, were incorporated in chapter II-2 of the 1974 Convention.
These provisions are based on the following principles:
1. Division of the ship into main and vertical zones by thermal and structural boundaries.
2. Separation of accommodation spaces from the remainder of the ship by thermal and structural boundaries.
3. Restricted used of combustible materials.
4. Detection of any fire in the zone of origin.
5. Containment and extinction of any fire in the space of origin.
6. Protection of the means of escape or of access for firefighting purposes.
7. Ready availability of fire-extinguishing appliances.
8. Minimization of the possibility of ignition of flammable cargo vapor.
Life-saving appliances and arrangements are dealt with in chapter III, which was completely revised by the 1983 amendments which entered into force on 1 July 1986. The revised chapter is divided into three parts.
Part A contains general provisions on application of the requirements, exemptions, definitions, evaluation, testing and approval of appliances and arrangements and production tests.
Part B contains the ship requirements and is subdivided into section I dealing with common requirements applicable to both passenger ships and cargo ships, section II containing additional requirements for passenger ships and section III containing additional requirements for cargo ships.
Part C deals with the life-saving appliance requirements and is divided into eight sections. Section I contains general requirements, section II requirements for personal life-saving appliances, section III visual signal requirements, section IV requirements for survival craft, section V rescue boat provisions, section VI requirements for launching and embarkation appliances, section VII other life-saving appliances, and section VIII miscellaneous matters.
Radiotelegraphy and radiotelephony form the subject matter of chapter IV: Part A describes the type of facility to be carried Operational requirements for watchkeeping and listening are given in part B, while technical provisions are detailed in part C. This part also includes technical provisions for direction-finders and for motor lifeboat radiotelegraph installations, together with portable radio apparatus for survival craft. The radio officers obligations regarding mandatory log-book entries are listed in part D.
The chapter is closely linked to the Radio Regulations of the International Telecommunication Union and was completely revised in October 1988 (see 1988 (GMDSS) amendments).
Safety of navigation is dealt with in chapter V which identifies certain navigation safety services which should be provided by Contracting Governments and seas forth provisions of an operational nature applicable in general to all ships on all voyages. This is in contrast to the Convention as a whole, which only applies to certain classes of ship engaged on international voyages.
The subjects covered include the maintenance of meteorological services for ships; the ice patrol service; routeing of ships; and the maintenance of search and rescue services.
This chapter also includes a general obligation for masters to proceed to the assistance of those in distress and for Contracting Governments to ensure that all ships shall be sufficiently and efficiently manned from a safety point of view.
Carriage of grain forms the subject matter of chapter VI. Shifting is an inherent characteristic of grain, and its effect on a ships stability can be disastrous. Consequently, the SOLAS Convention contains provisions concerning stowing, trimming and securing grain cargoes.
Provision is made for ships constructed specially for the transport of grain, and a method for calculating the adverse heeling moment due to a shift of cargo surface in ships carrying bulk grain is specified. It also provides for documents of authorization, grain loading stability data and associated plans of loading. Copies of all relevant documents must be available on board to enable the master to meet the chapters requirements.
This chapter was revised in 1991, to make it applicable to all types of cargo (except liquids and gases in bulk). (See 1991 amendments). Carriage of dangerous goods is dealt with in chapter VII, which contains provisions for the classification, packing, marking, labelling and placarding, documentation and stowage of dangerous goods in packaged form, in solid form in bulk, and liquid chemicals and liquefied gases in bulk.
The classification follows the system used by the UN for all modes of transport. The UN system has been adapted for marine transport and the provisions are in some cases more stringent.
Contracting Governments are required to issue instructions at the national level. To help them do this, the Organization developed the International Maritime Dangerous Goods (IMDG) Code. The IMDG Code is constantly updated to accommodate new dangerous goods and to supplement or revise existing provisions. Regulations concerning substances carried in bulk in purpose-built ships were introduced in the 1983 amendments dealt with below.
Nuclear ships are covered in chapter VIII. Only basic requirements are given and are particularly concerned with radiation hazards. However, a detailed and comprehensive Code of Safety for Nuclear Merchant Ships was adopted by the IMO Assembly in 1981 as an indispensable companion document.
The Protocol of 1978
Adoption: 17 February 1978
Entry into force: 1 May 1981
This was adopted at the International Conference on Tanker Safety and Pollution Prevention and made a number of important changes to chapter I, including the introduction of unscheduled inspections and/or mandatory annual surveys and the strengthening of port State control requirements.
Chapter II-1, chapter II-2 and chapter V were also improved. The main points are as follows:
1. New crude oil carriers and product carriers of 20,000 dwt and above are required to be fitted with an inert gas system.
2. An inert gas system became mandatory for existing crude oil carriers of 70,000 dwt and above by 1 May 1983, and by 1 May1985 for ships of 20-70,000 dwt.
3. In the case of crude oil carriers of 20-40,000 dwt there is provision for exemption by flag States where it is considered unreasonable or impracticable to fit an inert gas system and high-capacity fixed washing machines are not used. But an inert gas system is always required when crude oil washing is operated.
4. An inert gas system was required on existing product carriers from 1 May 1983 and by 1 May 1985 for ships of 40-70,000 dwt and down to 20,000 dwt which are fitted with high capacity washing machines.
5. In addition to requiring that all ships of 1,600 grt and above shall be fitted with radar, the Protocol requires that all ships of 10,000 grt and above have two radars, each capable of being operated independently.
6. All tankers of 10,000 grt and above shall have two remote steering gear control systems, each operable separately from the navigating bridge.
7. The main steering gear of new tankers of 10,000 grt and above shall comprise two or more identical power units, and shall be capable of operating the rudder with one or more power units.
The 1981 amendments
Adoption: 20 November 1981
Entry into force: 1 September 1984
Perhaps the most important amendments concern chapter II-1 and chapter II-2, both of which were virtually rewritten and updated.
The changes to chapter II-1 include updated provisions of revolution A.325(IX) on machinery and electrical requirements. Further amendments to regulations 29 and 30 were agreed following theAmoco Cadiz disaster and taking into account the 1978 SOLAS Protocol on steering gear. The requirements introduce the concept of duplication of steering gear control systems in tankers.
Amendments to chapter II-2 include the requirements of resolution A.327(XI), provisions for halogenated hydrocarbon extinguishing systems, special requirements for ships carrying dangerous goods, and a new regulation 62 on inert gas systems. The amendments to chapter II-2 strengthen the requirements for cargo ships and passenger ships to such an extent that a complete rearrangement of that chapter became necessary.
A few minor changes were made to chapter III but seven regulations in chapter IV were replaced, amended or added. Some important changes were also made to chapter V, including the addition of new requirements concerning the carriage of ship borne navigational equipment.
The revised requirements cover such matters as gyro and magnetic compasses; the mandatory carnage of two radars and of automatic radar plotting aids in ships of 10,000 grt and above; echo-sounders; devices to indicate speed and distance; rudder angle indicators; propeller revolution indicators; rate of turn indicators; radio-direction finding apparatus; and equipment for homing on the radiotelephone distress frequency.
In addition a number of small changes were made to chapter vii.
The 1983 amendments
Adoption: 17 June 1983
Entry into force: 1 July 1986
These amendments include a few minor changes to chapter II-1 and some further changes to chapter II-2 (including improvements to the 1981 amendments) designed particularly to increase the safety of bulk carriers and passenger ships.
The most extensive changes involve chapter III, which has been completely rewritten. The chapter in the 1974 Convention differs little from the texts which appeared in the 1960 and 1948 SOLAS Conventions and the amendments are designed not only to take into account the many technical advances which have taken place since then but also to expedite the evaluation and introduction of further improvements.
Some small changes were made to chapter IV. The amendments to chapter VII extended its application to chemical tankers and liquefied gas carriers by making reference to two new Codes, the International Bulk Chemical Code and the International Gas Carrier Code. Both relate to ships built on or after 1 July 1986.
The 1988 (April) amendments
Adoption: 21 April 1988
Entry into force: 22 October 1989
In March 1987 the car ferry Herald of Free Enterprise apsized and sank with the loss of 193 lives. The United Kingdom proposed a series of measures designed to prevent a recurrence, the first package of which was adopted in April.
They affect regulations 23 and 42 of Chapter II-1 and are intended to improve monitoring of doors and cargo areas and to improve emergency lighting.
Because of the urgency, the "tacit acceptance" procedure was used to bring the amendments into force only 18 months after their adoption.
The 1988 (October) amendments
Adoption: 28 October 1988
Entry into force: 29 April 1990
Some of these amendments also resulted from the Herald of Free Enterprise disaster.
They affect the intact stability of all passenger ships; require all cargo loading doors to be locked before a ship leaves the berth; and make it compulsory for passenger ships to have a lightweight survey at least every five years to ensure their stability has not been adversely affected by the accumulation of extra weight or any alterations to the superstructure.
Other amendments were being prepared before the disaster, but their adoption was brought forward as a result. They concern the stability of passenger ships in the damaged condition, and apply to ships built after 29 April 1990.
The 1988 Protocol
Adoption: 11 November 1988
Entry into force: 12 months after being accepted by at least 15 States whose combined merchant fleets represented at least 50% of world tonnage (but not before 1 February 1992)
Status: 6 acceptances have been received.
The Protocol introduces a new system of surveys and certification which will harmonize with two other conventions, Load Line (page 23) and MARPOL 73/78 (page 40). At present, requirements in the three instruments vary and, as a result, ships may be obliged to go into drydock for a survey required by one convention shortly after being surveyed in connection with another.
By enabling the required surveys to be carried out at the same time the system will reduce costs for shipowners and administrations alike.
The 1988 (GMDSS) amendments
Adoption: 11 November 1988
Entry into force: 1 February 1992
IMO began work on the Global Maritime Distress and Safety System in the 1970's and its introduction will mark the System in the 1970's and its introduction will mark the biggest change to maritime communications since the invention of radio.
It will be introduced in stages between 1993 and 1999. The basic concept of the system is that search and rescue authorities ashore, as well as ships in the vicinity, will be rapidly alerted in the event of an emergency.
The GMDSS will make great use of the satellite communications provided by INMARSAT (see page 29) but will also use terrestrial radio.
The equipment required by ships will vary accordingly to the area in which they operate. In addition to distress communications, the GMDSS will also provide for the dissemination of general maritime safety information (such as navigational and meteorological warnings and urgent information to ships).
The 1989 amendments
Adoption: 11 April 1989
Entry into force: 1 February 1992
The main changes concern Chapter II-1 and II-2 of the convention, which are respectively concerned with ships construction and with fire protection, detection and extinction. Chapter II-1 covers subdivision and stability and machinery and electrical installations. One of the most important amendments is designed to reduce the number and size of openings in watertight bulkheads in passenger ships and to ensure that they are closed in the event of an emergency.
Chapter II-2 deals with fire protection, detection and extinction. Improvements have been introduced to fixed gas fire-extinguishing systems, smoke detection systems, arrangements for fuel and other oils, the location and separation of spaces and several other regulations.
The International Gas Carrier Code - which is mandatory under SOLAS - was also amended.
The 1990 amendments
Adoption: May 1990
Entry into Force: 1 February 1992
Important changes have been made to the way in which the subdivision and stability of dry cargo ships is calculated. They apply to ships of 100 meters or more in length built after 1 February 1992.
The amendments are contained in a new part B-1 of chapter II-1 and are based upon the so-called "probabilistic" concept of survival, which was originally developed through study of data relating to collisions collected by IMO. This showed a pattern in accidents which could be used in improving the design of ships: most damage, for example, is sustained in the forward part of ships and it seemed logical, therefore, to improve the standard of subdivision there rather than towards the stem. Because it is based on statistical evidence as to what actually happens when ships collide, the probabilistic concept provides a far more realistic scenario than the earlier "deterministic" method, whose principles regarding the subdivision of passenger ships are theoretical rather than practical in concept.
At the same meeting amendments were adopted to the International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code) and the International Code for the Construction and Equipment of Ships Carrying Liquified Gases in Bulk.
The 1991 amendments
Adoption: 24 May 1991
Entry into force: 1 January 1994 (expected date under "tacit acceptance")
The most important feature of these amendments is the complete revision of Chapter VI (carriage of grain). This has been extended to include other cargoes. The text is shorter, but the chapter is backed up by two new Codes. The International Grain Code will be a mandatory instrument while the Code of Safe Practice for Cargo Stowage and Securing is recommended. The new chapter also refers to the Code of Safe Practice for Ships Carrying Timber Deck Cargoes and the Code of Safe Practice for Solid Bulk Cargoes.
Fire safety requirements for passenger ships have been improved by means of amendments to Chapter II- 1 and other changes have been made to Chapter Ill and Chapter VI (safety of navigation).International Convention on Load Lines, 1966
Adoption: 5 April 1966
Entry into force: 21 July 1968
It has long been recognized that limitations on the draft to which a ship may be loaded make a significant contribution to her safety. These limits are given in the form of freeboards, which constitute, besides external weather tight and watertight integrity, the main objective of the Convention.
The first International Convention on Load Lines, adopted in 1930, was based on the principle of reserve buoyancy, although it was recognized then that the freeboard should also ensure adequate stability and avoid excessive stress on the ships hull as a result of overloading.
Provisions are made determining the freeboard of tankers by subdivision and damage stability calculations.
The regulations take into account the potential hazards present in different zones and different seasons. The technical annex contains several additional safety measures concerning doors, freeing ports, hatchways and other items. The main purpose of these measures is to ensure the watertight integrity of ships hulls below the freeboard deck.
All assigned load lines must be marked amidships on each side of the ship, together with the deck line. Ships intended for the carriage of timber deck cargo are assigned a small freeboard as the deck cargo provides protection against the impact of waves.Amendments
Amendments were adopted to the Convention in 1971 (to make certain improvements to the text and to the chart of zones and seasonal areas); in 1975 (to introduce the principle f "tacit acceptance" into the Convention); in 1979 (to make some alterations to zone boundaries off the coast of Australia), and in 1983 (to extend the summer and tropical zones southward off the coast of Chile).
None of these amendments has yet entered into force. In each case 78 acceptances are required and, to date, the 1971 amendments have received 47 acceptances, 1975 - 42; 1979 -40; and 1983 - 22.
The 1988 Protocol
Adoption: 11 November 1988
Entry into force: 12 months after being accepted by not less than 15 States whose combined merchant fleets constitute not less than 50 percent of world tonnage
Status: 9 acceptances have been received
The protocol was adopted in order to harmonize the Conventions survey and certification requirement with those contained in SOLAS (see above) and MARPOL 73/78 (see below).Special Trade Passenger Ships Agreement, 1971
Adoption: 6 October 1971
Entry into force: 2 January 1974
The carriage of large numbers of unberthed passengers in special trades such as the pilgrim trade - in a restricted sea area around the Indian Ocean - is of particular interest to countries in that area. It was regulated by the Simla Rules of 1931, which had become outdated following the adoption of the 1948 and 1960 SOLAS Conventions.
Recognizing this fact, IMO convened an International Conference in 1971 to consider safety requirements for special trade passenger ships in relation to the 1960 SOLAS Convention.
Annexed to this Agreement are Special Trade Passenger Ships Rules, 1971, which provide modifications to the regulations of chapters II and Ill of the 1960 SOLAS Convention.
Protocol on Space Requirements for Special Trade Passenger Ships, 1973
Adoption: 13 July 1973
Entry into force: 2 June 1977
Following a resolution of the International Conference on Special Trade Passenger Ships, 1971, IMO, in cooperation with other Organizations, particularly the World Health Organization (WHO), drew up technical rules covering the safety aspects of the disposition of passengers on board such ships.
As a result of this work, in 1973 IMO convened a Conference which adopted a Protocol on Space Requirements for Special Trade Passenger Ships. Annexed in this Protocol are the technical rules covering the safety aspect of the disposition of passengers in special trade passenger ships.
The space requirements for special trade passenger ships have a direct bearing on the safe carriage of special trade passengers and are complementary to the Special Trade Passenger Ships Agreement of 1971.Convention on the International Regulations for Preventing Collisions at Sea, 1972
Adoption: 20 October 1972
Entry into force: 15 July 1977
This Convention was designed to update and replace the Collision Regulations of 1960 which were annexed to the SOLAS Convention adopted in that year.
One of the most important innovations in the 1972 Regulations was the recognition given to traffic separation schemes.
Rule 10 states that vessels using these schemes will be required to proceed in the appropriate traffic lane in the general direction of traffic flow for that lane, keeping clear of a traffic separation line or zone. In so far as is practicable, vessels must avoid crossing traffic lanes. When crossing a lane is necessary, it must be accomplished as nearly as practicable at right angles to the general direction of the traffic flow.
The Convention groups provisions into sections dealing with steering and sailing; lights and shapes and sound and light signals. There are also four Annexes containing technical requirements concerning lights and shapesand their positioning; sound signalling appliances; additional signals for fishing vessels when operating in close proximity, and international distress signals.
Guidance is provided in determining safe speed, the risk of collision and the conduct of vessels operating in or near traffic separation schemes. Other rules concern the operation of vessels in narrow channels, the conduct of vessels in restricted visibility, vessels restricted in their ability to maneuver, and provisions concerning vessels constrained by their draught.
The rules also include requirements for special lights for air-cushion vessels operating in the non-displacement mode, a yellow light to be exhibited above the white sternlight by vessels engaged in towing, special lights and day signals for vessels engaged in dredging or under-water operations, and sound signals to be given in restricted visibility.
The technical details of construction and positioning of lights and shapes have been placed in a separate Annex.
The 1981 amendments
Adoption: 19 November 1981
Entry into force: 1 June 1983
These were adopted by the IMO Assembly and entered into force under the "tacit acceptance" procedure on 1 June 1983. A number of rules are affected but perhaps the most important change concerns Rule 10, which has been amended to enable vessels carrying out various safety operations, such as dredging or surveying, to carry out these functions in traffic separation schemes.
The 1987 amendments
Adoption: 19 November 1987
Entry into force: 19 November 1989
The amendments affect several rules, such as Rule 1(e) - vessels of special construction: the amendment classifies the application of the Convention to such ships; Rule 3(h), which defines a vessel constrained by her draught; Rule 10(c) - crossing traffic lanes, etc.
The 1989 amendments
Adoption: 19 October 1989
Entry into force: 19 April 1989
The amendment concerns Rule 10 and is designed to stop unnecessary use of the inshore traffic zone.International Convention for Safe Containers, 1972
Adoption: 2 December 1972
Entry into force: 6 September 1977
In view of the rapid increase in the use of freight containers for the consignment of goods by sea and the development of specialized container ships, in 1967 IMO undertook to study the safety of containerization in marine transport. The container itself emerged as the most important aspect to be considered.
In 1972 a conference was held to consider a draft convention prepared by IMO in cooperation with the Economic Commission for Europe. The conference was jointly convened by the United Nations and IMO.
The 1972 Convention for Safe Containers has two goals. One is to maintain a high level of safety of human life in the transport and handling of containers by providing generally acceptable test procedures and related strength requirements which have proven adequate over the years.
The other is to facilitate the international transport of containers by providing uniform international safety regulations, equally applicable to all modes of surface transport. In this way, proliferation of divergent national safety regulations can be avoided.
The requirements of the Convention apply to the great majority of freight containers used internationally, except those designed specially for carriage by air. As it was not intended that all containers, van or reusable packing boxes should be affected, the scope of the Convention is limited to containers of a prescribed minimum size having corner fittings - devices which permit handling, securing or stacking.
The Convention sets out procedures whereby containers used in international transport will be safety-approved by an Administration of a Contracting State or by an organization acting on its behalf.
The Administration or its authorized representative will authorize the manufacturer to affix to approved containers a safety approval plate containing the relevant technical data.
The approval, evidenced by the safety approval plate granted by one Contracting State, should be recognized by other Contracting States. This principle of reciprocal acceptance of safety-approved containers is the cornerstone of the Convention; and once approved and plated it is expected that containers will move in international transport with the minimum of safety control formalities.
The subsequent maintenance of a safety-approved container is the responsibility of the owner, who is required to have the container periodically examined.
The technical Annex to the Convention specifically requires that the container be subjected to various tests which represent a combination of safety requirements of both the inland and maritime modes of transport.
Flexibility is incorporated in the Convention by the provision of simplified amendment procedures which make it possible to speedily adapt the test procedures to the requirements of international container traffic.
The 1981 amendments
Adoption: April 1981
Entry into force: 1 December 1981
The amendments provide transitional arrangements for plating of containers (which had to be completed by 1 January 1985), and for the marking of the date of the containers next examination by 1 January 1987.
The 1983 amendments
Adoption: June 1983
Entry into force: 1 January 1984
The amendments extend the interval between re-examination to 30 months and permit a choice of container re-examination procedures between the original periodic examination scheme or a new continuous examination program.
The 1991 amendments
Adoption: 17 May 1991
Entry into force: 1 January 1993
The amendments concern Annexes I and II of the Convention. They include the addition of a new Chapter V to Annex I concerning regulations for the approval of modified containers.Convention on the International Maritime Satellite Organization, 1976
Adoption: 3 September 1976
Entry into force: 16 July 1979
For some years maritime radio communications frequency bands have become increasingly congested. With the continuous expansion of maritime mobile communications, the situation will continue to deteriorate. This could have serious consequences for maritime communications and safety at sea.
The use of space technology, however, could help overcome the problem and many others which have arisen in recent years. IMO has been involved in this subject since 1966, and in 1973 decided to convene a conference with the object of establishing a new maritime communications system based on satellite technology.
The Conference first met in 1975 and held three sessions, at the third of which the Convention was adopted, together with an Operating Agreement.
The Convention defines the purposes of INMARSAT as being to improve maritime communications, thereby assisting in improving distress and safety of life at sea communications, the efficiency and management of ships, maritime public correspondence services, and radio determination capabilities.
The Organization consists of an Assembly, Council and a Directorate headed by a Director-General, and the functions of each are defined. An Annex to the Convention outlines procedures for the settlement of disputes.
The Operating Agreement set an initial capital ceiling for the Organization of $US 200 million. Investment shares are determined on the basis of utilization of the INMARSAT space segment.
INMARSAT began operations in 1981 and has its headquarters in London.
The 1985 amendments
Adoption: 16 October 1985
Entry into force: 13 October 1989
The amendments enable INMARSAT to provide services to aircraft as well as ships.
The 1989 amendments
Adoption: 19 January 1989
Entry into force: One year after being accepted by two-thirds of Parties representing two-thirds of the total investment share.
Status: The amendments have been ratified by 18 countries
The amendments will enable INMARSAT to provide services to land-based vehicles as well as ships and aircraft.The Torremolinos International Convention for the Safety of Fishing Vessels, 1977
Adoption: 2 April 1977
Entry into force: One year after 15 States with 50 percent of the worlds fishing fleet of vessels of 24 metres in length have ratified the Convention.
Status: The Convention has been ratified by 15 States, (other requirements not yet met)
The Convention is the first-ever international convention on the safety of fishing vessels, and was adopted at a conference held in Torremolinos, Spain.
The safety of fishing vessels has been a matter of concern to IMO since it came into existence, but the great differences in design and operation between fishing vessels and other types of ships had always proved a major obstacle to their inclusion in the Conventions on Safety of Life at Sea and Load Lines.
The Convention contains safety requirements for the construction and equipment of new, decked, seagoing fishing vessels of 24 metres in length and over, including those vessels also processing their catch. Existing vessels are covered only in respect of radio requirements.
One of the most important features of the Convention is that it contains stability requirements for the first time in an international convention.
Other chapters deal with such matters as construction, watertight integrity and equipment; machinery and electrical installations and unattended machinery spaces; fire protection, detection, extinction, and fire fighting; protection of the crew; life-saving appliances; emergency procedures, musters and drills; radiotelegraphy and radiotelephony; and shipborne navigational equipment.International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, 1978
Adoption: 7 July 1978
Entry into force: 28 April 1984
The Convention is the first to establish basic requirements on training, certification and watchkeeping for seafarers on an international level.
The technical provisions of the Convention are contained in an Annex, which is divided into six chapters. The first contains general provisions and the contents of the others are outlined below.
1. Master-deck department: This chapter outlines basic principles to be observed in keeping a navigational watch.
It then lays down mandatory minimum requirements for the certification of masters, chief mates and officers in charge of navigational watches on ships of 200 grt or more. Other regulations deal with mandatory minimum requirements for officers in charge of navigational watches and masters of ships of less than 200 grt and for ratings forming part of a navigational watch.
The chapter also includes regulations designed to ensure the continued proficiency and updating of knowledge for masters and deck officers. Further requirements are contained in a number of Annexes.
2. Engine Department: This chapter outlines basic principles to be observed in keeping an engineering watch. It includes mandatory minimum requirements for certification of chief and second engineer officers of ships with main propulsion machinery of 3000 kW or more and for ships of between 750 kW and 3000 kW.
Mandatory minimum requirements are also laid down for the certification of engineer officers in charge of a watch in a traditionally manned engine room, or the designated engineer in a periodically unmanned engine room, and the chapter also establishes mandatory minimum requirements for ratings forming part of an engine room watch.
3. Radio Department: The first regulation in this chapter deals wih radio watchkeeping and maintenance. The chapter goes on to establish mandatory minimum requirements for certification of radio officers and radio operators, and requirements to ensure their continued proficiency and updating of knowledge. Another regulation establishes mandatory minimum requirements for certification of radiotelephone operators.
4. Special requirements for tankers: This chapter deals with additional mandatory minimum requirements for the training and qualification of masters, officers and ratings of oil tankers, chemical tankers and liquefied gas tankers.
5. Proficiency in survival craft: This chapter is concerned with mandatory minimum requirements for the issue of certificates of proficiency in survival craft.
The requirements of the Convention are augmented by 23 resolutions adopted by the Conference, many of which contain more detailed provisions on the subjects covered by the Convention itself.
The 1991 amendments
Adoption: 22 May 1991
Entry into force: 1 December 1992
The amendments are mostly concerned with the additional requirements made necessary by the implementation of the Global Maritime Distress and Safety System (GMDSS) which will be phased in from 1 February 1992 to 1 February 1999.International Convention on Maritime Search and Rescue, 1979
Adoption: 27 April 1979
Entry into force: 22 June 1985
The main purpose of the Convention is to facilitate co-operation between Governments and between those participating in search and rescue (SAR) operations at sea by establishing an international SAR plan. Cooperation of this type is encouraged by SOLAS 1974, Parties to which undertake to ensure that any necessary arrangements are made for coast watching and for the rescue of persons in distress round its coasts. These arrangements should include the establishment, operation and maintenance of such maritime safety facilities as are deemed practicable and necessary.
The technical requirements of the SAR Convention are contained in an Annex. Parties to the Convention are required to ensure that arrangements are made for the provision of adequate SAR services in their coastal waters.
Parties are encouraged to enter into SAR agreements with neighboring States involving the establishment of SAR regions, the pooling of facilities, establishment of common procedures, training and liaison visits. The Convention states that Parties should take measures to expedite entry into its territorial waters of rescue units from other Parties.
The Convention then goes on to establish preparatory measures which should be taken, including the establishment of rescue coordination centres and subcentres. It outlines operating procedures to be followed in the event of emergencies or alerts and during SAR operations. This includes the designation of an on-scene commander and his duties.
Parties to the Convention are required to establish ship reporting systems, under which ships report their position to a coast radio station. This enables the interval between the loss of contact with a vessel and the initiation of search operations to be reduced. It also helps to permit the rapid determination of vessels which may be called upon to provide assistance including medical help when required.
Marine Pollution International Convention for the Prevention of Pollution of the Sea by Oil, 1954, as amended in 1962,1969 and 1971 International Convention for the Prevention of Pollution of the Sea by Oil, 1954, as amended in 1962,1969 and 1971
Adoption: 12 May 1954
Entry into force: 26 July 1958
1962 amendments adopted: April 1962
Entry into Force: 18 May/ 28 June 1967
1969 amendments adopted: 21 October 1969
Entry into Force 20 January 1978
1971 (Great Barrier Reef) amendments adopted: 12 October 1971
Entry into force:*
1971 (Tanks) amendments adopted: 15 October1971
Entry into Force:*
One of the earliest indications of marine pollution as a problem requiring international control was pollution of the sea by oil.
In 1954, the International Convention for the Prevention of Pollution of the Sea by Oil was adopted. It has now been superseded by MARPOL 73/78 (see below) but is described here because of its historical importance.
Depositary responsibilities for this Convention were passed to IMO when it was established in 1959. As one of its first tasks, the Organization carried out a worldwide enquiry into the general extent of oil pollution, the availability of shore reception facilities and the progress of research on methods of combating the increasing menace. The results of this survey led IMO to convene a conference in 1962 which extended the application of the 1954 Convention to ships of lesser gross tonnage, and enlarged the prohibited zones.
The Convention prohibits the deliberate discharge of oil or oily mixtures from all seagoing vessels, except tankers of under 150 tons gross and other ships of under 500 tons gross, in specific areas called prohibited zones. In general these extend at least 50 miles from all land areas, although zones of 100 miles and more were established in areas which included the Mediterranean and Adriatic Seas, the Gulf and Red Sea, the coasts of Australia, Madagascar and some others.
The Contracting Parties undertake to promote the provision of facilities for the reception of oil residues and oily mixtures without causing undue delay to ships. The Convention prescribes that every ship which uses oil fuel and every tanker shall be provided with a book in which all the oil transfers and ballasting operations shall be recorded.
The oil record book may be inspected by authorities of any Contracting Party.
Contracting Parties have the right to inform another Contracting Party when one of the latters ships contravenes the provisions of the Convention. The Government so informed shall investigate the matter and, if satisfied that sufficient evidence is available, cause proceedings to be taken. The reporting Government and IMO shall be given the result of such proceedings.
Any contravention of the provisions of the Convention shall be an offence punishable under the law of the flag State. Penalties for unlawful discharge outside that States territorial sea shall not be less than penalties which may be imposed for the same infringements within its territorial sea. The Contracting Governments agreed to report to the Organization the penalties actually imposed for each infringement.
Although the restrictions imposed by the 1954 Convention were very effective, the enormous growth in oil movements during the 1960's made it necessary to introduce more stringent regulations.1969 amendments
In October 1969, further extensive amendments to the Oil Pollution Convention and its Annex were approved which are generally based upon the principle of total prohibition of oil discharge and give international recognition to the "load on top" system.
The restrictions include:
(a) Limitation of the total quantity of oil which a tanker may discharge in a ballast voyage to 1/15,000 of the ships total cargo-carrying capacity;
(b) Limitation of the rate at which oil may be discharged to a maximum of 60 liters per mile travelled by the ship;
(c) Prohibition of discharge of any oil whatsoever from the cargo spaces of a tanker within 50 miles of the nearest land.
A new form of oil record book was also formulated to facilitate the task of the officials concerned with controlling the observance of the Convention.1971 amendments
In 1971, two further amendments were approved by the IMO Assembly. One recognized the need to protect the Great Barrier Reef a an area of unique scientific importance and set out the precise limits of a protective zone which is considerably in excess of that prescribed in the Convention.
The other introduced a limitation on the size of individual cargo tanks in VLCCs and was designed to limit the outflow of oil in the case of collision or grounding.
The implication of this oil outflow limitation varies according to various factors, such as the arrangement of tanks, the fitting of double bottoms, the interposing of clean water ballast tanks, etc.; but in the case of normal single hull tankers of up to 422,000 tons dwt, with two longitudinal bulkheads, the capacity of a single center tank and a wing
tank is limited to 30,000 m3 and 15,000 m3, respectively, and thereafter gradually increases to 40,000 m3 and 20,000 m3, respectively, for a tanker of one million tons dwt. Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter, 1972
Adoption: 13 November 1972
Entry into force: 30 August 1975
The Inter-Governmental Conference on the Convention on the Dumping of Wastes at Sea, which met in London in November 1972 at the invitation of the United Kingdom, adopted this instrument, generally known as the London Dumping Convention.
The Convention came into force on 30 August 1975 and IMO was made responsible for the Secretariat duties related to it.
The Convention has a global character, and represents a further step towards the international control and prevention of marine pollution. It prohibits the dumping of certain hazardous materials, requires a prior special permit for the dumping of a number of other identified materials and a prior general permit for other wastes or matter.
Dumping has been defined as the deliberate disposal at sea of wastes or other matter from vessels, aircraft, platforms or other man-made structures, as well as the deliberate disposal of these vessels or platforms themselves.
Wastes derived from the exploration and exploitation of sea-bed mineral resources are, however, excluded from the definition. The provision of the Convention shall also not apply when it is necessary to secure the safety of human life or of vessels in cases of force majeure.
Among other requirements, Contracting Parties undertake to designate an authority to deal with permits, keep records, and monitor the condition of the sea.
Other articles are designed to promote regional co-operation, particularly in the fields of monitoring and scientific research.
Annexes list wastes which cannot be dumped and others for which a special dumping permit is required. The criteria governing the issuing of these permits are laid down in a third Annex which deals with the nature of the waste material, the characteristics of the dumping site and method of disposal.
The 1978 amendments (incineration)
Adoption: 12 October 1978
Entry into force: 11 March 1979
The amendments affect Annex I of the Convention and are concerned with the incineration of wastes and other matter at sea.
The 1978 amendments (disputes)
Adoption: 12 October 1978
Entry into force: 60 days after being accepted by two thirds of Contracting Parties.
Status: The amendments have been accepted by 14 States
As these amendments affect the articles of the Convention they ar not subject to the "tacit acceptance" procedure and will enter into force one year after being positively accepted by two thirds of Contracting Parties. They introduce new procedures for the settlement of disputes.
The 1980 amendments (list of substances)
Adoption: 24 September 1980
Entry into force: 11 March 1981
These amendments are related to those concerned with incineration and list substances which require special care when being incinerated.
The 1989 amendments
Adoption: 3 November 1989
Entry into force: 19 May 1990
The amendments qualify the procedures to be followed when issuing permits under Annex III. Before this is done, consideration has to be given to whether there is sufficient scientific information available to assess the impact of dumping.The International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 relating thereto (MARPOL 73/78)
This instrument is a combination of two other treaties adopted in 1973 and 1978 respectively. Although it is now one instrument it is described under two headings to show how it evolved.International Convention for the Prevention of Pollution from Ships, 1973
Adoption: 2 November 1973
Entry into force: 2 October 1983
Despite the action already taken by IMO to deal with oil pollution, far-reaching developments in modern industrial practices soon made it clear that further action, was required.
Accordingly the IMO Assembly decided in 1969 to convene an international conference to prepare a suitable international agreement for placing restraints on the contamination of the sea, land and air by ships. That Convention was adopted in November 1973.
It covers all the technical aspects of pollution from ships, except the disposal of waste into the sea by dumping, and applies to ships of all types, although it does not apply to pollution arising out of the exploration and exploitation of sea-bed mineral resources.
The Convention has two Protocols dealing respectively with Reports on Incidents involving Harmful Substances and Arbitration; and five Annexes which contain regulations for the prevention of various forms of pollution:
(a) pollution by oil;
(b) pollution by noxious liquid substances carried in bulk;
(c) pollution by harmful substances carried in packages, portable tanks, freight containers, or road or rail tank wagons, etc.;
(d) pollution by sewage from ships; and,
(e) pollution by garbage from ships.
The main provisions of the 1973 Convention, supplemented as appropriate by the related decisions of the Conference, are summarized in the following paragraphs.
Annex I: Prevention of pollution by oil
Entry into force: 2 October 1983
The Convention maintains the oil discharge criteria prescribed in the 1969 amendments to the 1954 Oil Pollution Convention (see above), without substantial changes, except that the maximum quantity of oil which is permitted to be discharged on a ballast voyage of new oil tankers has been reduced from 1/15,000 of the cargo capacity of 1/30,000 of the amount of cargo carried. These criteria apply equally both to persistent (black) and non-persistent (white) oils.
A new and important feature of the 1973 Convention is the concept of "special areas" which are considered to be so vulnerable to pollution by oil that oil discharges within them have been completely prohibited, with minor and well-defined exceptions. The main special areas are the Mediterranean Sea, the Black Sea, the Baltic Sea, the Red Sea and the Gulfs area.
All oil-carrying ships are required to be capable of operating the method of retaining oily wastes on board through the "load on top" system or for discharge to shore reception facilities.
This involves the fitting of appropriate equipment, including an oil-discharge monitoring and control system, oily-water separating equipment and a filtering system, slop tanks, sludge tanks, piping and pumping arrangements.
New oil tankers (i.e. those for which the building contract was placed after 31 December 1975) of 70,000 tons deadweight and above, must be fitted with segregated ballast tanks large enough to provide adequate operating draught without the need to carry ballast water in cargo oil tanks.
Secondly, new oil tankers are required to meet certain subdivision and damage stability requirements so that, in any loading conditions, they can survive after damage by collision or stranding.
Annex II: Control of pollution by noxious liquid substances
Entry into force: 6 April 1967
Annex II details the discharge criteria and measures for the control of pollution by noxious liquid substances carried in bulk.
Some 250 substances were evaluated and included in the list appended to the Convention. The discharge of their residues is allowed only to reception facilities until certain concentrations and conditions (which vary with the category of substances) air complied with. In any case, no discharge of residues containing noxious substances is permitted within 12 miles of the nearest land. More stringent restrictions apply to the Baltic and Black Sea areas.
Annex III: Prevention of pollution by harmful substances carried in packaged form, or in freight containers or portable tanks or road and rail tank wagons
Entry into force: 1 July 1992
This is the first of the conventions optional annexes. States ratifying the Convention must accept Annexes I and II but can choose not to accept the other three. Consequently, the latter have all taken much longer to meet the requirements for entry into force.
Annex III contains general requirements for the issuing of detailed standards on packing, marking, labeling, documentation, stowage, quantity limitations, exceptions and notifications for preventing pollution by harmful substances.
To help implement the Annex, the International Maritime Dangerous Goods (IMDG) Code has been amended to include marine pollutants. The amendments to the Code entered into force on 1 January 1991.
Annex IV: Prevention of pollution by sewage Entry into force: 12 months after being ratified by 15 States whose combined fleets of merchant shipping constitute at least 50% of the world fleet. Status: The Annex has been accepted by 34 States whose fleets represent 37% of world tonnage
The second of the three optional Annexes, these contain requirements to control pollution of the sea by sewage.
Annex V. (garbage)
Entry into force: 31 December 1988
This deals with different types of garbage and specifies the distances from land and the manner in which they may be disposed of. The requirements are much stricter in a number of "special areas but perhaps the most important feature of the Annex is the complete ban imposed on the dumping into the sea of all forms of plastic.Enforcement
Any violation of the Convention within the jurisdiction of any Party to the Convention is punishable either under the law of that Party or under the law of the flag State. In this respect, the ten-term jurisdiction in the Convention should be cons in the light of international law in force at the time the Convention is applied or interpreted.
With the exception of very small vessels, ships engaged on international voyages must carry on board valid international certificates which may be accepted at foreign ports as prima
facie evidence that the ship complies with the requirements of the Convention.
If, however, there are clear grounds for believing that the condition of the ship or its equipment does not correspond substantially with the particulars of the certificate, or if the ship does not carry a valid certificate, the authority carrying out the inspection may detain the ship until it is satisfied that the ship can proceed to sea without presenting unreasonale threat of harm to the marine environment.
Under article 17, the Parties to the Convention accept the obligation to promote, in consultation with other international bodies and with the assistance of UNEP, support for those Parties which request technical assistance for various purposes, such as training, the supply of equipment, research, and combating pollution.The Protocol of 1978
Adoption: 17 February 1978
Entry into force: 2 October 1983
The International Conference on Tanker Safety and Pollution Prevention held from 6 to 17 February 1978, resulted in the adoption of a number of important measures, including Protocols to SOLAS 1974 and MARPOL 1973. The Conference decided that the SOLAS Protocol should be a separate instrument, and should enter into force after the parent convention.
In the case of MARPOL, however, the Conference adopted a different approach. At that time the principal problems preventing early ratification of the MARPOL Convention were those associated with Annex II. The changes envisaged by the Conference involved mainly Annex I and it was therefore decided to adopt the agreed changes - and at the same time to allow Contracting States to defer implementation of Annex II for three years after the date of entry into force of the Protocol (i.e. on 2 October 1986). By then it was expected that the technical problems would have been solved.
The Protocol makes a number of changes to Annex I of the parent convention. Segregated ballast tanks (SBT) are requited on all new tankers of 20,000 dwt and above (in the parent convention SBTs were only required on new tankers of 70,000 dwt and above). The Protocol also requires that SBTs be protectively located -that is, they must be positioned in such a way that they will help protect the cargo tanks in the event of a collision or grounding.
Another important innovation concerned crude oil washing (COW), which had recently been developed by the oil industry and offered major benefits. Under COW, tanks are washed not with water but with crude oil - the cargo itself COW is accepted as an alternative to SBTs on existing tankers and is an additional requirement on new tankers.
For existing crude oil tankers a third alternative was permissible for a period of two to four years after entry into force of MARPOL 73/78 This is called dedicated clean ballast tanks (CBI) and is a system whereby certain tanks are dedicated solely to the carriage of ballast water. This is cheaper than a full SBT system since it utilizes existing pumping and piping, but when the period of grace has expired other systems must be used.
Drainage and discharge arrangements were also altered in the Protocol, regulations for improved stripping systems were introduced.
Some oil tankers operate solely in specific trades between ports which are provided with adequate reception facilities. Some others do not use water as ballast. The TSPP Conference recognized that such ships should not be subject to all MARPOL requirements and they are consequently exempted from the SBT, COW and CBT requirements.
It is generally recognized that the effectiveness of international conventions depends upon the degree to which they are obeyed and this in turn depends largely upon the extent to which they are enforced. The 1978 Protocol to MARPOL therefore introduced stricter regulations for the survey and certification of ships.
This procedure in effect meant that the Protocol had absorbed the parent convention. States which ratify the Protocol must also give effect to the provisions of the 1973 Convention: there is no need for a separate instrument of ratification for the latter. The 1973 MARPOL Convention and the 1978 MARPOL Protocol should therefore be read as one instrument, which is usually referred to as MARPOL73/78.
The 1984 amendments
Adoption: 7 September 1984
Entry into force: 7 January 1986
The amendments are concerned with Annex I of the Convention and are designed to make implementation easier and more effective. New requirements are designed to prevent oily water being discharged in special areas, and other requirements are strengthened. But in some cases they have been eased, provided that various conditions are met: some discharges may now be permitted below the waterline, for example, which helps to cut costs by reducing the need for extra piping.
The 1985 (Annex II) amendments
Adoption: 5 December 1985
Entry into force: 6 April 1987
The amendments are concerned with Annex III, which deals with liquid noxious substances (such as chemicals). They take into account technological developments since the Annex was drafted in 1973 and are also intended to simplify its implementation. In particular they are intended to reduce the need for reception facilities for chemical wastes and to improve cargo tank stripping efficiencies.
The amendments also make the International Bulk Chemical Code mandatory. This is important because the Annex itself is concerned only with discharge procedures: the Code contains carriage requirements. The Code itself was revised to take into account anti-pollution requirements and the result will be to make the amended Annex more effective in reducing accidental pollution.
The 1985 (Protocol 1) amendments
Adoption: 5 December 1985
Entry into force: 6 April 1987
The amendments make it an explicit requirement to report incidents involving discharge into the sea of harmful substances in packaged form.
The 1987 amendments
Adoption: December 1978
Entry into force: 1 April 1989
The amendments extended Annex I Special Area status to the Gulf of Aden.
1989 (March) amendments
Adoption: March 1989
Entry into force: 13 October 1990
One group of amendments affect the International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code). This is mandatory under both MARPOL 73/78 and SOLAS and applies to ships built on or after 1 July 1986.
A second group concerns the Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (BCH). In both cases, the amendments include revised list of chemicals. The BCH Code is mandatory under MARPOL 73/78 but is voluntary under SOLAS 1974.
The third group of amendments affect Annex II of MARPOL. The lists of chemicals in appendices II and Ill are replaced by new ones.
The October 1989 amendments
Adoption: 17 October 1989
Entry into force: 18 February 1991
The amendments make the North Sea a "special area" under Annex V of the convention. This greatly increases the protection of the sea against the dumping of garbage from ships.
The 1990 (HSSC) amendments
Adoption: March 1990
Entry into force: Six months after the entry into force of the 1988 SOLAS and Load Line Protocols
The amendments are designed to introduce the harmonized system of survey and certificates (HSSC) into MARPOL 73/78 This can be done through the "tacit acceptance" procedure, which is not possible in the case of SOLAS and the Load Line Convention.
The 1990 (IBC Code) amendments
Adoption: March 1990
Entry into force: On the same date as the March 1990 HSSC amendments. The amendments introduce the HSSC into the IBC Code.
The amendments introduce the HSSC into the IBC Code.
The 1990 (BCH) amendments
Adoption: March 1990
Entry into force: On the same date as the March 1990 HSSC amendments.
The amendments introduce the HSSC into the BCH Code.
The 1990 (Annexes I and V) amendments
Adoption: November 1990
Entry into force: 17 March 1992
The amendments extend Special Area Status under Annexes I and V to the Antarctic.
The 1991 amendments
Adoption: 4th July 1991
Entry into force: 4 April 1993 (under "tacit acceptance", unless rejected).
The amendments will make the Wider Caribbean a Special Area under Annex V.International Convention Relating to Intervention on the High Seas in Cases of Oil Pollution Casualties, 1969
Adoption: 29 November 1969
Entry into force: 6 May 1975
TheTorrey Canyon disaster of 1967 revealed certain doubts with regard to the powers of States, under public international law, in respect of incidents on the high seas. In particular, questions were raised as to the extent to which a coastal State could take measures to protect its territory from pollution where a casualty threatened that State with oil pollution, especially if the measures necessary were likely to affect the interests of foreign shipowners, cargo owners and even flag States.
The general consensus was that there was need for a new regime which, while recognizing the need for some State intervention on the high seas in cases of grave emergency, clearly restricted that right to protect other legitimate interests. A conference to consider such a regime was held in Brussels in 1969.
The Convention which resulted affirms the right of a coastal State to take such measures on the high seas as may be necessary to prevent, mitigate or eliminate danger to its coastline or related interests from pollution by oil or the threat thereof, following upon a maritime casualty. The coastal State is, however, empowered to take only such action as is necessary, and after due consultations with appropriate interests including, in particular, the flag State or States of the ship or ships involved, the owners of the ships or cargoes in question and, where circumstances permit, independent experts appointed for this purpose. A coastal State which takes measures beyond those permitted under the Convention is liable to pay compensation for any damage caused by such measures. Provision is made for the settlement of disputes arising in connection with the application of the Convention.
The Convention applies to all seagoing vessels except warships or other vessels owned or operated by a State and used on Government non-commercial service.
The Protocol of 1973
Adoption: 2 November 1973
Entry into force: 30 March 1983
The 1969 Intervention Convention applied to casualties involving pollution by oil. In view of the increasing quantity of other substances, mainly chemical, carried by ships, some of which would, if released, cause serious hazard to the marine environment, the 1969 Brussels Conference recognized the need to extend the Convention to cover substances other than oil.
Following considerable work on this subject within the Legal Committee, draft articles for an instrument to extend the application of the 1969 Convention to substances other than oil were prepared and submitted to the 1973 London Conference on Marine Pollution.
The Conference adopted the Protocol relating to Intervention on the High Seas in Cases of Marine Pollution by Substances other than oil. This extends the regime of the 1969 Intervention Convention to substances which are either listed in the Annex to the Protocol or which have characteristics substantially similar to those substances.International Convention on Oil Pollution Preparedness, Response and Cooperation, 1990
Adoption: 30 November 1990
Entry into Force: 12 months after being accepted by 15 States
Status: No acceptances have been received
In June 1989, a conference of leading industrial nations in Paris called upon IMO to develop further measures to prevent pollution from ships. This call was endorsed by the IMO Assembly in November of the same year and work began on a draft convention.
The purpose of the convention is to provide a global framework for international cooperation in combating major incidents or threats of marine pollution. Parties to the convention will be required to establish measures for dealing with pollution accidents, either nationally or in co-operation with other countries. Ships are required to carry a shipboard oil pollution emergency plan, the contents of which are to be developed by IMO.
Ships are required to report incidents of pollution to coastal authorities and the convention details the actions that are then to be taken. The convention calls for the establishment of stockpiles of oil spill combating equipment, the holding of oil spill combating exercise and the development of detailed plans for dealing with pollution incidents. Parties to the convention are required to provide assistance to others in the event of a pollution emergency and provision is made for the reimbursement of any assistance provided.
The convention provides for IMO to play an important coordinating role.Liability and Compensation International Convention on Civil Liability for Oil Pollution Damage, 1969
Adoption: 29 November 1969
Entry into force: 19 June 1975
Another major legal issue raised by theTorrey Canyon incident related to the basis and extent of the ship or cargo owners liability for damage suffered by States or other persons as a result of a marine casualty involving oil pollution.
The aim of the Civil Liability Convention is to ensure that adequate compensation is available to persons who suffer oil pollution damage resulting from maritime casualties involving oil-carrying ships.
The Convention places the liability for such damage on the owner of the ship from which the polluting oil escaped or was discharged.
Subject to a number of specific exceptions, this liability is strict; it is the duty of the owner to prove in each case that any of the exceptions should in fact operate. However, except where the owner has been guilty of actual fault, he may limit his liability in respect of any one incident to slightly over $US 125 for each ton of the ships gross tonnage, with a maximum liability of $US 14 million* for each incident.
The Convention requires ships covered by it to maintain insurance or other financial security in sums equivalent to the owners total liability for one incident.
The Convention applies to all seagoing vessels actually carrying oil in bulk as cargo, but only ships carrying more than 2,000 tons of oil are required to maintain insurance in respect of oil pollution damage.
This does not apply to warships or other vessels owned or operated by a State and used for the time being for Government non-commercial service. The Convention, however, applies in respect of the liability and jurisdiction provisions, to ships owned by a State and used for commercial purposes. The only exception as regards such ships is that they are not required to carry insurance. Instead they must carry a certificate issued by the appropriate authority of the State of their registry stating that the ships liability under the Convention is covered.
The Protocol of 1976
Adoption: 9 November 1976
Entry into force: 8 April 1981
The 1969 Civil Liability Convention used the Poincare, based on the official value of gold, as the applicable unit of account. Experience has shown, however, that the conversion of this gold-franc into national currencies was becoming increasingly difficult. In view of this a Protocol to the Convention was adopted in 1976 which provides for a new unit of account, based on the Special Drawing Rights (SDRs) as used by the International Monetary Fund (IMF). However, in order to cater for those countries which are not members of the IMF and whose laws do not permit the use of the SDRs, the Protocol provides for an alternate monetary unit - based, as before, on gold.
The Protocol of 1984
Adoption: 25 May 1984
Entry into force: 12 months after being accepted by 10 States, including six with tanker fleets of at least 1 millio gross tons.
Status: 7 acceptances have been received.
While the compensation system established by the 1969 CLC and 1971 Fund Convention had proved very useful, by the mid-1980's it was generally agreed that the limits of liability were too low to provide adequate compensation in the event of a major pollution incident.
Under the CLC Protocol, a ship up to 5,000 gt will be able to limit its liability to $US 3.12 million while for ships above that figure the limit will increase in proportion to their tonnage, up to a maximum of $US 62 million for ships of 140,000 gt and above.
The 1984 Protocol provides for a new and simplified procedure for amending the liability limits in the Protocol.International Convention on the Establishment of an International Fund for Compensation for Oil Pollution Damage, 1971
Adoption: 18 December 1971
Entry into force: 16 October 1978
Although the 1969 Civil Liability Convention provided a useful mechanism for ensuring the payment of compensation for oil pollution damage, it did not deal satisfactorily with all the legal, financial and other questions raised during the Conference.
Some States objected to the regime established, since it was based on the strict liability of the shipowner for damage which he could not foresee and, therefore, represented a dramatic departure from traditional maritime law which based liability on fault. On the other hand, some States felt that the limitation figures adopted were likely to be inadequate in cases of oil pollution damage involving large tankers. They therefore wanted an unlimited level of compensation or a very high limitation figure.
In the light of these reservations, the 1969 Brussels Conference considered a compromise proposal to establish an international fund, to be subscribed to by the cargo interests, which would be available for the dual purpose of, on the one hand, relieving the shipowner of the burden imposed on him by the requirements of the new convention and, on the other hand, providing additional compensation to the victims of pollution damage in cases where compensation under the 1969 Civil Liability Convention was either inadequate or unobtainable.
The Conference recommended that IMO should prepare such a scheme. The Legal Committee accordingly prepared draft articles and the Convention was adopted at a Conference held in Brussels. It is supplementary to the 1969 Civil Liability Convention.
The purposes of the Fund Convention are:
1. To provide compensation for pollution damage to the extent that the protection afforded by the 1969 Civil Liability Convention is inadequate.
2. To give relief to shipowners in respect of the additional financial burden imposed on them by the 1969 Civil Liability Convention, such relief being subject to conditions designed to ensure compliance with safety at sea and other conventions.
3. To give effect to the related purposes set out in the Convention.
Under the first of its purposes, the Fund is under an obligation to pay compensation to States and persons who suffer pollution damage, if such persons are unable to obtain compensation from the owner of the ship from which the oil escaped or if the compensation due from such owner is not sufficient to cover the damage suffered.
Under the Fund Convention, victims of oil pollution damage may be compensated beyond the level of the shipowners liability. However, the Funds obligations are limited so that the total payable to victims by the shipowner and the Fund shall not exceed $US 30 million for any one incident. In effect, therefore, the Funds maximum liability for each incident is limited to $US 16 million.
Where, however, them is no shipowner liable or the shipowner liable is unable to meet his liability, the Fund will be required to pay the whole amount f compensation due. Under certain circumstances, the Funds maximum liability may increase to not more than $US 60 million for each incident.
With the exception of a few cases, the Fund will be obliged to pay compensation to the victims of oil pollution damage who are unable to obtain adequate or any compensation from the shipowner or his guarantor under the 1969 Convention.
The Funds obligations to pay compensation is confined to pollution damage suffered in the territories including the territorial sea of Contracting States. The Fund is also obliged to pay compensation in respect of measures taken by a Contracting State outside its territory.
The Fund can also provide assistance to Contracting States which are threatened or affected by pollution and wish to take measures against it. This may take the form of personnel, material, credit facilities or other aid.
In connection with its second main function, the Fund is obliged to indemnify the shipowner or his insurer for a portion of the shipowners liability under the Liability Convention. This portion is equivalent to $US 100 per ton or $US 8.3 million, whichever is the lesser.
The Fund is not obliged to indemnify the owner if damage is caused by his wilful misconduct or if the accident was caused even partially because the ship did not comply with certain conventions.
The Convention contains provisions on the procedure for claims, rights and obligations, and jurisdiction.
Contributions to the Fund should be made by all persons who receive oil by sea in Contracting States. The Funds Organization consists of an Assembly of States, a Secretariat headed by a director appointed by the Assembly; and an Executive Committee.
The Protocol of 1976
Adoption: 19 November 1976
Entry into force: 90 days after being accepted by 8 States which have received a total or 750 million tons of contributing oil during the previous calendar year.
Status: 19 acceptances have been received (representing about 75 percent of the total contributing oil required)
The 1971 Fund Convention applied the same unit of account as the 1969 Civil Liability Convention, i.e. the Poincare franc. For similar reasons the Protocol provides for a unit of account, based on the Special Drawing Right (SDR) as used by the International Monetary Fund (IMF).
The Protocol of 1984
Adoption: 25 May 1984
Entry into force: 12 months after being accepted by at least 8 States whose combined total of contributing oil amounted to at least 600 million tons during the previous calendar year
Status: 2 acceptances have been received
The Protocol is primarily intended to raise the limits of liability contained in the convention and thereby enable greater compensation to be paid to victims of oil pollution incidents.
The basic coverage (including that under the CLC) will be limited to a maximum of $US 140 million. But when the total quantities of contributing oil received in three Contracting States equals 600 million tons or more, the limit of compensation will be increased to a maximum of $US 208 million.
A new and simplified procedure for raising the liability limits is also included.Convention Relating to Civil Liability in the Field of Maritime Carriage of Nuclear Materials, 1971
Adoption: 17 December 1971
Entry into force: 15 July 1975
In 1971 IMO, in association with the International Atomtic Energy Agency (IAEA) and the European Nuclear Energy Agency of the Organization for Economic Cooperation and Development (OECD), convened a Conference which adopted a Convention to regulate liability in respect of damage arising from the maritime carriage of nuclear substances.
The purpose of this Convention is to resolve difficulties and conflicts which arise from the simultaneous application to nuclear damage of certain maritime conventions dealing with shipowners liability, as well as other conventions which placed liability arising from nulear incidents on the operators of the nuclear installations from which or to which the material in question was being transported.
The 1971 Convention provides that a person otherwise liable for damage caused in a nuclear incident shall be exonerated for liability if the operator of the nuclear installation is also liable for such damage by virtue of the Paris Convention of 29 July 1960 on Third Party Liability in the Field of Nuclear Energy; or the Vienna Convention of 21 May 1963 on Civil Liability for Nuclear Damage; or national law which is similar in the scope of protection given to the persons who suffer damage.Athens Convention Relating to the Carriage of Passengers and Their Luggage by Sea, 1974
Adoption: 13 December 1974
Entry into force: 28 April 1987
A Conference, convened in Athens in 1974, adopted the Athens Convention Relating to the Carriage of Passengers and Their Luggage by Sea, 1974.
The Convention is designed to consolidate and harmonize two earlier Brussels conventions dealing with passengers and luggage and adopted in 1961 and 1967 respectively.
The Convention establishes a regime of liability for damage suffered by passengers carried on a seagoing vessel. It declares a carrier liable for damage or loss suffered by a passenger if the incident causing the damage occurred in the course of the carriage and was due to the fault or neglect of the carrier.
However, unless the carrier acted with intent to cause such damage, or recklessly and with knowledge that such damage would probably result, he can limit his liability. For the death of, or personal injury to, a passenger, this limit of liability is set at $US 55,000 per carriage.
As far as loss of or damage to luggage is concerned, the carriers limit of liability varies, depending on whether the loss or damage occurred in respect of cabin luggage, of a vehicle and/or luggage carried in or on it, or in respect of other luggage.
Protocol to the Athens Convention relating to the Carriage of Passengers and their Luggage by Sea, 1974
Adoption: 19 November 1976
Entry into force: 30 April 1989
The Athens Convention also used the Poincare franc, based on the official value of gold, as the applicable unit of account.
A Protocol to the Convention, with the same provisions as in the Protocols to the 1971 Fund Convention and the 1969 Liability Convention, was accordingly adopted in November 1976.
The 1990 Protocol
Adoption: 30 March 1990
Entry into force: 90 days after being accepted by 10 States
Status: No acceptances have been received.
The main aim of the Protocol is to raise the amount of compensation available in the event of deaths or injury at around $US 225,000. Other limits are $US 2,322 for loss of or damage to cabin luggage and $US 12,900 for loss of or damage to vehicles.
The Protocol also makes provision for the "tacit acceptance" procedure to be used to amend the limitation amounts in the future.Convention on Limitation of Liability for Maritime Claims, 1976
Adoption: 19 November 1976
Entry into force: 1 December 1986
The Convention replaces the International Convention Relating to the Limitation of the Liability of Owners of Seagoing Ships, which was signed in Brussels in 1957, and came into force in 1968.
Under the 1976 Convention, the limit of liability for claims covered is raised considerably, in some cases up to 250-300 percent. Limits are specified for two types of claims - claims for loss of life or personal injury, and property claims (such as damage to other ships, property or harbour works).
With regard to personal claims, liability for ships not exceeding 500 tons is limited to 330,000 units of account (equivalent to $US 400,000). For larger vessels the following additional amounts (given here in dollar equivalents) will beused in calculating claims:
l For each ton from 501 to 3,000 tons, $US 600 (approx.)
l For each ton from 3,001 to 30,000 tons, $US 400
l For each ton from 30,001 to 70,000 tons, $US 300
l For each ton in excess of 70,000 tons, $US 200
For other claims, the limit of liability is fixed at $US 200,000 for ships not exceeding 500 tons. For larger ships the additional amounts will be:
l For each ton from 501 to 30,000 tons, $US 200
l For each ton from 30,001 to 70,000 tons, $US 150
l For each ton in excess of 70,000 tons, $US 100
In the Convention, the limitation amounts are expressed in terms of units of account. These are equivalent in value to the Special Drawing Rights (SDRs) as defined by the International Monetary Fund (IMF), although States which are not members of the IMF and whose law does not allow the use of SDRs may continue to use the old gold franc (now referred to as monetary unit in the Convention).
The Convention provides for a virtually unbreakable system of limiting liability. It declares that a person will not be able to limit liability only if it is proved that the loss resulted from his personal act or omission, committed with the intent to cause such a loss, or recklessly and with knowledge that such loss would probably result.
Other Subjects Convention on Facilitation of International Maritime Traffic, 1965
Adoption: 9 April 1965
Entry into force: 5 March 1967
Since the turn of the century the requirements of statisticians and the ever-increasing sophistication of the shipping industry itself have led to an increase in the number of national authorities taking an interest in the call of ships and personnel at ports.
In the last few decades, the lack of internationally standardized documentation procedures has imposed a heavy and increasing burden upon the industrys personnel, both shipborne and ashore and caused considerable delays. To deal with the problems, IMO began work on these problems soon after its inception and in 1965 the Convention on Facilitation of International Maritime Traffic was adopted.
The Conventions main objectives are to prevent unnecessary delays in maritime traffic, to aid cooperation between Governments, and to secure the highest practicable degree of uniformity in formalities and other procedures.
The Annex to the Convention contains provisions relating to the arrival, stay and departure of ships and persons, health and quarantine, and sanitary measures for plants and animals.
These provisions are divided into Standards and Recommended Practices, and the documents which should be required by Governments are listed.
The 1973 amendments
Adoption: November 1973
Entry into force: 2 June 1984
Amendments to the Annex were adopted in 1969 and 1977 and entered into force in 1977 and 1984 respectively. However, major improvements to the Convention were rendered virtually impossible by the cumbersome amendment procedure which required the positive acceptance of more than 50 percent of Contracting Parties. The 1973 amendments introduced the "tacit acceptance" procedure included in many other IMO conventions.
The 1986 amendments
Adoption: 7 March 1986
Entry into force: 1 October 1986
The new "tacit acceptance" procedure made it possible to update the Convention speedily and the 1986 amendents were designed primarily to reduce red tape and in particular to enable automatic data processing techniques to be used in shipping documentation.
The 1987 amendments
Adoption: September 1987
Entry into force: 1 January 1989
The amendments simplify the documentation required by ships including crew lists, and also facilitate the movement of ships engaged in disaster relief work and similar activities.
The May 1990 amendments
Adoption: May 1990
Entry into force: 1 September 1991
The amendments revise several recommended practices and add others dealing with drug trafficking and the problems of the disabled and elderly. They encourage the establishment of national facilitation Committees and also cover stowaways and traffic flow arrangements.International Convention on Tonnage Measurement of Ships, 1969
Adoption: 23 June 1969
Entry into force: 18 July 1982
The Convention, which was adopted by IMO in 1969, is the first successful attempt to introduce a universal tonnage measurement system.
Previously, various systems were used to calculate the tonnage of merchant ships. Although all went back to the method devised by George Moorsom of the British Board of Trade in 1854, there were considerable differences between them and it was recognized that there was a great need for one single international system.
The 1969 Tonnage Measurement Convention provides for gross and net tonnages, both of which are calculated independently. The gross tonnage is a function of the moulded volume of all enclosed spaces of the ship. The net tonnage is produced by a formula which is a function of the moulded volume of all cargo spaces of the ship. The net tonnage shall not be taken as less than 30 percent of the gross tonnage. The entry into force of the Convention was expected to result in the eventual elimination of the shelter-deck type vessel. There is only one net tonnage and its change is allowed only once a year. It applies to new ships in general from the date of entry into force of the Convention. New ships are defined as those whose keels have been laid or which are at a similar stage of construction on or after the date of entry into force.
Existing ships, if not converted, were enabled to retain their existing tonnage for 12 years after entry into force. This is intended to ensure that ships are given reasonable safeguards in the interests of the economic welfare of the shipping industry. On the other hand a ship may be assigned the new tonnage if the owner so wishes.
As far as possible, the Convention was drafted to ensure that gross and net tonnages calculated under the new system did not differ too greatly from those calculated under existing methods.Convention for the Suppression of Unlawful Acts Against the Safety of Maritime Navigation, 1988
Adoption: 10 March 1988
Entry into force: 1 March 1992
The main purpose of the convention is to ensure that appropriate action is taken against persons committing unlawful acts against ships. These include the seizure of ships by force; acts of violence against persons on board ships; and the placing of devices on board a ship which are likely to destroy or damage it.
The convention obliges Contracting Governments either to extradite or prosecute alleged offenders.
Protocol for the Suppression of Unlawful Acts Against the Safety of Fixed Platforms Located on the Continental Shelf, 1988
Adoption: 10 March 1988
Entry into force: 1 March 1992
The Protocol extends the requirements of the Convention to fixed platforms such as those engaged in the exploitation of offshore oil and gas.International Convention on Salvage, 1989
Adoption: 28 April 1989
Entry into force: 1 year after being accepted by 15 States
Status: 2 acceptances have been received
The convention is intended to replace an instrument adopted in Brussels in 1910. This Convention incorporates the "no cure, no pay" principle which has been in existence for many years and is the basis of most salvage operations today.
However, it does not take compensation into account. The new convention seeks to remedy this by making provisions for "special compensation" to be paid to salvers when there is a threat to the environment.
This will consist of the salvors expenses plus 30 percent if environmental damage is minimized or prevented, but this can be increased to 100 percent in certain circumstances.
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