Amendments to IMO instruments: upcoming and recent entry into force/effective dates

Listed below are amendments expected to enter into force in the current year and forthcoming periods, in accordance with the amendment procedures set out in IMO instruments and the resolutions by which they have been adopted.

Where applicable, these dates may also refer to other specified “effective dates” as provided in the relevant instruments.

Date of entry into force/Effective date

Instruments and description of amendments

Resolutions

1 Jan 2024

SOLAS - GMDSS Modernization

Following a comprehensive review of the Global Maritime Distress and Safety System (GMDSS), the MSC adopted a set of amendments to complete the work on modernization of the GMDSS and to enable the future use of modern communication systems in the GMDSS whilst removing obsolete requirements. They include amendments to SOLAS chapters II-1, III, IV and V, and the appendix (Certificates); the 1988 SOLAS Protocol; the 1994 and 2000 HSC Codes; the 1983 and 2008 SPS Codes; and the 1979, 1989 and 2009 MODU Codes. A substantial number of amendments or revisions to existing related resolutions and guidelines have also been adopted, including performance standards for relevant equipment.

Amendments to mandatory instruments

Resolution MSC.496(105)

Resolution MSC.497(105)

Resolution MSC.498(105)

Resolution MSC.499(105) 

Amendments to non-mandatory instruments

Resolution MSC.502(105) 

Resolution MSC.503(105)

Resolution MSC.504(105)

Resolution MSC.505(105)

Resolution MSC.506(105) 

Resolution MSC.509(105)

Resolution MSC.517(105)

1 Jan 2024

SOLAS records of equipment, FSS code, IGF code, LSA code 

Amendments to the appendix to the annex to the 1974 SOLAS, concerning the addition of a footnote to Forms C, E and P in the Records of Equipment. 

Resolution MSC.456(101)

Amendments to chapter 15 of the International Code for Fire Safety Systems (FSS Code), relating to inert gas systems. 

Resolution MSC.457(101)

Amendments to parts A and A-1 of the International Code of Safety for Ships using Gases or other Low-flashpoint Fuels (IGF Code), including those relating to regulations on loading limit for liquefied gas fuel tanks, regulations for fuel distribution outside of machinery space, regulations for internal combustion engines of piston type and fire protection for fuel storage hold space; and amendments relating to the protection of the fuel supply for liquefied gas fuel tanks, aimed at preventing explosions. 

ResolutionMSC.458(101)

Amendments to chapters IV and VI of the International Life-Saving Appliance Code (LSA Code), relating to general requirements for lifeboats and launching and embarkation appliances.  

Resolution MSC.459(101)

Amendments to chapter II-1 of the International Convention for the Safety of Life at Sea (SOLAS), related to towing and mooring. The amendments to SOLAS regulation II-1/3-8 (Towing and mooring equipment), require appropriate and safe-to-use designs of mooring arrangements, and introduce a maintenance and inspection regime, as well as proper documentation. Related  guidelines were also adopted, covering the design of mooring arrangements and the selection of appropriate mooring equipment and fittings for safe mooring; and inspection and maintenance of mooring equipment including lines; as well as revised guidance on shipboard towing and mooring equipment. 

Amendments to parts B-1, B-2 and B-4 of SOLAS chapter II-1 related to watertight integrity requirements. The amendments are expected to enter into force on 1 January 2024.

Resolution MSC.474(102)

Amendments to the International Code of Safety for Ships using Gases or other Low-flashpoint Fuels (IGF Code),  related to the fuel containment systems, fire safety, welding of metallic materials and non-destructive testing.

Resolution MSC.475(102)

Amendments to the International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code), related to welding procedure tests for cargo tanks and process pressure vessels.

Resolution MSC.476(102)

New SOLAS regulation II-1/25-1, requiring water level detectors on multiple hold cargo ships other than bulk carriers and tankers. 

Resolution MSC.482(103)

Amendments to SOLAS regulation III/33 and the LSA Code, aiming to remove the applicability of the requirements to launch free-fall lifeboats to test their strength with the ship making headway at speeds up to 5 knots in calm water on cargo ships of 20,000 GT and above. 

Resolution MSC.485(103)

Chapter 9 of the International Code for Fire Safety Systems (FSS Code), relating to fault isolation requirements for individually identifiable fire detector systems installed, in lieu of section identifiable fire detector systems on cargo ships and passenger ship cabin balconies; and clarifying the acceptability of less complex and costly section identifiable fault isolation for individually identifiable fire detector system on cabin balconies; and clarifying the acceptability of less complex and costly section identifiable fault isolation for individually identifiable fire detector systems.

Resolution MSC.484(103)

A minor amendment to chapter II (Conditions of assignment of freeboard), as well as amendments to chapter III (Freeboards) of annex I (Regulations for determining load lines) of Annex B to the 1988 Load Lines Protocol, concerning watertight doors on cargo ships, and 

Resolution MSC.491(104)

associated amendments concerning watertight doors on cargo ships to chapter 2 (Ship survival capability and location of cargo tanks) of the International Code of the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code). 

Resolution MSC.492(104)

Updates to the International Maritime Dangerous Goods (IMDG) Code, in line with the updates to the United Nations Recommendations on the Transport of Dangerous Goods, which set the recommendations for all transport modes. Contracting Governments to the SOLAS Convention are invited to apply the amendments from 1 January 2023 on a voluntary basis.

Resolution MSC.501(105)

1 Jan 2024

Revised  FAL Convention 

  • Amendments to the Facilitation (FAL) Convention which will make the single window for data exchange mandatory in ports around the world, marking a significant step in the acceleration of digitalization in shipping.

  • Other amendments adopted include lessons learnt from the COVID-19 pandemic and add new and amended Recommended Practices to prevent corruption and illicit activities in the maritime sector.

  • Mandatory Single Window - The amendments update the provisions of the FAL Convention on mandatory electronic data exchange in ports for ship clearance. The amendments to the annex of the Convention will make it mandatory for public authorities to establish, maintain and use single window (SW) systems for the electronic exchange of information required on arrival, stay and departure of ships in ports. In addition, public authorities will have to combine or coordinate the electronic transmission of the data to ensure that information is submitted or provided only once and re-used to the maximum extent possible. 

  • Provisions derived from lessons learned during the course of the COVID-19 pandemic - Contracting Governments and their relevant public authorities are required to allow ships and ports to remain fully operational during a public health emergency of international concern (PHEIC), in order to maintain complete functionality of global supply chains to the greatest extent possible. Public authorities are also required to designate port workers and ships' crew as key workers (or equivalent), regardless of their nationality or the flag of their ship, when in their territory. Best practice recommendations aim to prevent obstacles to crew movement for repatriation, crew change and travel, and encourage dissemination of information about public health matters and expected protection measures by ship operators. 

  • The amendments concerning arrival and departure of persons require public authorities to inform passengers about vaccination requirements sufficiently in advance of departure and vaccinators to use the International Certificate of Vaccination or Prophylaxis in order to assure uniform acceptance.

  • Tackling maritime corruption - Updates to the FAL Convention take a systemic approach to addressing the issue of corruption associated with the ship-shore interface in ports. Contracting Governments are now required to encourage public authorities to assess the risks of corruption and address them by developing and implementing preventive measures to strengthen integrity, transparency and accountability. Public authorities are required to coordinate efforts to detect, investigate and sanction corruption related to ships' calls in the port, including through national and international cooperation.

  • Updated definitions - The amendments bring in updated definitions and general provisions for various terms used in the Convention, establishing agreed terminology. This means that all stakeholders, whether at a port, onboard a ship or a third party (such as a public authority, etc.) will now have a clear consensus on the meaning of terms such as 'actual time of arrival', 'estimated time of arrival', 'authenticate', etc.

Resolution FAL.14(46)

1 Jan 2024 

MARPOL 

MARPOL Annex I in relation to watertight doors. 

Resolution MEPC.343(78)

1 May 2024  

MARPOL

Mediterranean Sea Emission Control Area for Sulphur Oxides and particular matter - designation of Mediterranean Sea, as a whole, as an Emission Control Area for Sulphur Oxides and Particular Matter, under MARPOL Annex VI. In such an Emission Control Area, the limit for sulphur in fuel oil used on board ships is 0.10% mass by mass (m/m), while outside these areas the limit is 0.50% m/m. 

Resolution MEPC.361(79)

Mandatory garbage record books for smaller ships -  amendments to MARPOL Annex V to make the Garbage Record Book mandatory also for ships of 100 gross tonnage and above and less than 400 gross tonnage. This extends the requirement for mandatory garbage record books to smaller ships, which will be required to keep records of their garbage handling operations, namely discharges to a reception facility ashore or to other ships, garbage incineration, permitted discharges of garbage into the sea, and accidental or other exceptional discharged or loss of garbage into the sea. The move supports implementation of IMO's Strategy and Action Plan to address marine plastic litter from ships.

Resolution MEPC.360(79)

Protecting seas in the Arctic - regional arrangements for port reception facilities - amendments to the MARPOL annexes to allow States with ports in the Arctic region to enter into regional arrangements for port reception facilities. The amendments relate to MARPOL Annexes I (oil), II (noxious liquid substances), IV (sewage), V (garbage) and VI (air pollution). 

Resolution MEPC.359(79)

Resolution MEPC.360(79)

EEXI, CII and rating values - amendments to appendix IX of MARPOL Annex VI on the reporting of mandatory values related to the implementation of the IMO short-term GHG reduction measure, including attained EEXI, CII and rating values to the IMO Ship Fuel Oil Consumption Database (IMO DCS).

Amendments to non-mandatory instruments

Resolution MEPC.365(79)
Resolution MEPC.364(79)

Fuel flashpoint in bunker delivery note - amendments to appendix V of MARPOL Annex VI, to include flashpoint of fuel oil or a statement that the flashpoint has been measured at or above 70ºC as mandatory information in the bunker delivery note (BDN). 

Resolution MEPC.362(79)

1 July 2024

MARPOL HFO in Arctic waters prohibition

Entry into effect of amendments to MARPOL Annex I (addition of a new regulation 43A) to introduce a prohibition on the use and carriage for use as fuel of heavy fuel oil (HFO) by ships in Arctic waters on and after 1 July 2024. The prohibition will cover the use and carriage for use as fuel of oils having a density at 15°C higher than 900 kg/m3 or a kinematic viscosity at 50°C higher than 180 mm2/s. Ships engaged in securing the safety of ships, or in search and rescue operations, and ships dedicated to oil spill preparedness and response would be exempted. Ships which meet certain construction standards with regard to oil fuel tank protection would need to comply on and after 1 July 2029. A Party to MARPOL with a coastline bordering Arctic waters may temporarily waive the requirements for ships flying its flag while operating in waters subject to that Party's sovereignty or jurisdiction, up to 1 July 2029.

Resolution MEPC.329(76)

1 January 2024

IBC Code 

Amendments to  International Code for the Construction and Equipment of Ships Carrying Dangerous Chemicals in Bulk (IBC Code) related to watertight doors.

Resolution MEPC.343(78)

1 July 2024

SOLAS and 2011 ESP Code

New SOLAS chapter XV and the new mandatory Code for Industrial Personnel - new SOLAS chapter  XV and the associated new International Code of Safety for Ships Carrying Industrial Personnel (IP Code), developed by the Sub-Committee on Ship Design and Construction (SDC 8). The aim is to provide minimum safety standards for ships that carry industrial personnel, as well as for the personnel themselves, and address specific risks of maritime operations within the offshore and energy sectors, such as personnel transfer operations. Such personnel may be engaged in the construction, maintenance, decommissioning, operation or servicing of offshore facilities, such as windfarms, as well as offshore oil and gas installations, aquaculture, ocean mining or similar activities.

Resolution MSC.521(106)

2011 ESP Code  - amendments to the International Code on the Enhanced Programme of Inspections during Surveys of Bulk Carriers and Oil Tankers, 2011 (2011 ESP Code) include those addressing inconsistencies on examination of ballast tanks at annual surveys for bulk carriers and oil tankers the following requirement contained in the condition evaluation report.

Resolution MSC.525(106)

1 May 2025 

MARPOL

MARPOL Annex VI amendment enters into effect - designation of Mediterranean Sea, as a whole, as an Emission Control Area for Sulphur Oxides and Particular Matter, under MARPOL Annex VI. In such an Emission Control Area, the limit for sulphur in fuel oil used on board ships is 0.10% mass by mass (m/m), while outside these areas the limit is 0.50% m/m.

Resolution MEPC.380(80)

6 June 2025

Hong Kong Convention 

The Hong Kong International Convention for the Safe and Environmentally Sound Recycling of Ships, 2009 (the Hong Kong Convention), was adopted at a diplomatic conference held in Hong Kong, China, from 11 to 15 May 2009, which was attended by delegates from 63 countries. (read more here)

1 Jan 2026

SOLAS  and IGC and IGF Code

SOLAS chapter II-2 in relation to flashpoint - amendments to SOLAS chapter II-2, intended to prevent the supply of oil fuel not complying SOLAS flashpoint requirements (60°C), enhancing the safety of ships using oil fuel. The amendments add new definitions and provisions to SOLAS regulation II-2/4 (Probability of ignition), including requiring that ships carrying oil fuel shall prior to bunkering be provided with a declaration signed and certified by the fuel oil supplier's representative that the oil fuel supplied is in conformity with regulation SOLAS II.2/4.2.1 and with the test method used for determining the flashpoint.

Resolution MSC.520(106)

SOLAS Protocol of 1978 -  amendments to the 1978 SOLAS Protocol concern the Form of Safety Equipment Certificate for Cargo Ships, ensuring harmonization with the forms of certificates in the appendix (Certificates) to the annex to the 1974 SOLAS Convention, amended by resolution MSC.496(105) for consistency, as a result of the GMDSS modernization. 

Resolution MSC.522(106)

IGC and IGF Code amendments: amendments to chapter 6 of the International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk (IGC Code); and to chapter 7 of the International Code of Safety for Ships Using Gases or other Low-flashpoint Fuels (IGF Code) concern the application of high manganese austenitic steel for cryogenic service in cargo and fuel tanks of LNG carriers and LNG-fuelled ships.

Resolution MSC.523(106)

Resolution MSC.524(106)