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UK MRV Regime

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UK MRV Regime 29.11.2021 14:24

IBICON provides information from the Department of Transport about preparations to be made by ship operators and verifiers in order to comply with the emissions data reporting required under the legislation underpinning the UK MRV regime.

The UK Monitoring, Reporting, and Verification (MRV) regime includes the obligation for shipoperators and verifiers to collect and report emissions data.

Although the UK is no longer part of the EU MRV regime, it has retained and amended EU legislation to establish a UK MRV regime to monitor, report and verify emissions data from ships calling at UK ports.

The UK MRV applies to ships over 5,000 gross tonnage, irrespective of their Flag State or where the ship operator is registered, transporting cargo and/or passengers for commercial purposes to and from UK ports, between UK ports or within UK ports (including while at berth).

Marine information note (MIN 669 (M+F)) ‘Reporting Emissions Data into the UK-MRV Regime’ provides advice on the legal and practical considerations for the introduction of the new system, some of which are summarised below.

  • UK-MRV requirement will be applicable to ships > 5000 GT, irrespective of their flag, calling at UK ports.
  • Similar exemptions apply to vessels under the UK-MRV regime that apply under the EU-MRV regime, ie warships, naval auxiliaries, fish-catching or fish-processing ships, ships not propelled by mechanical means, and government ships used for non-commercial purposes.
  • Emissions data for the following voyages will need to be included in the UK-MRV emissions report:

- Voyages between UK ports
- Voyages between UK and non-EEA port
- Emissions generated at a UK port for the above voyages
- Voyages between UK and UK overseas territories or Crown dependencies – such as the Falkland Islands, Gibraltar, Isle of Man, Jersey. However, voyages between two Crown dependencies or overseas territories should not be included. Likewise, a voyage from a port in an overseas territory or Crown dependency to a non-UK port should not be included.

  • Voyages between the UK and EEA (ports under EU-MRV regime) do not have to be reported under UK-MRV because they are already being reported under the EU-MRV regime.
  • The UK-MRV regime is expected to be fully in place by the end of 2021. Members will be expected to begin collecting data for voyages for the UK-MRV regime from 1 January 2022 onwards, for the 2022 reporting period. No enforcement action will be taken until 2023.
  • From 1 July 2021, ships which used a UK or EEA port in 2020, should be carrying a Document of Compliance (DoC) for emissions data collected during the 2020 reporting period, to comply with the EU-MRV regime. A DoC issued under the EU-MRV regime, and which covers voyages between the UK and EEA ports is recognised as a UK DoC equivalent for those voyages.
  • From 31 December 2021, an assessed UK-MRV monitoring plan will need to be in place. If a ship already uses a monitoring plan under the EU-MRV regime, member will need to confirm with the verifier if this is suitable for the UK-MRV regime, or if changes are needed.
  • The assessment of the monitoring plan and the verification of the annual emission report for each ship needs to be done by an accredited verifier. From 1 January 2023, all verifiers must be accredited by the United Kingdom Accreditation Service (UKAS) – members should check the status of their verifier(s).
  • From 30 June 2023, a separate DoC will be needed to cover voyages to and from UK ports, made in the previous reporting period, which fall outside the scope of the EU-MRV.
  • Templates for the monitoring plan, the emissions report and the document of compliance will be made available in due course by the UK government.



On 17June 2021 (MEPC 76), the International Maritime Organization (IMO) adopted amendments to MARPOL Annex VI, which consists of new regulations 23 and 25 – the introduction of the Energy Efficiency Existing Ship Index (EEXI) and regulation 28 - the requirement to demonstrate operational carbon intensity reduction through the Carbon Intensity Indicator (CII).


Equasis and EMSA (European Maritime Safety Agency) have published the Report of the world’s merchant fleet in 2020.



IBICON provides information from the Department of Transport about preparations to be made by ship operators and verifiers in order to comply with the emissions data reporting required under the legislation underpinning the UK MRV regime.

The new Guide for Ammonia-Fueled Vessels sets out Classification design criteria for the arrangements, construction, installation and survey of machinery, equipment and systems for vessels operating with ammonia as fuel to minimize risks to the vessel, crew and the environment.

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