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Technical Conference: Managing CII and Associated Challenges 2025

Carbon Intensity Indicator (CII) – What is it?

The Carbon Intensity Indicator (CII) is a mandatory rating measure for ships, developed by the International Maritime Organization (IMO), that came into effect on 1st January 2023.

As part of its commitment to addressing climate change, the IMO has been working on the development of a Carbon Intensity Indicator (CII) for international shipping. The CII is intended to measure the carbon efficiency of ships and assess their relative carbon emissions performance. The concept of the CII was introduced in the IMO’s Initial Strategy on Reduction of GHG Emissions from Ships, adopted in 2018. The strategy sets out a vision to reduce total annual greenhouse gas emissions from international shipping.

The CII is intended to be a key tool to assess and monitor the carbon intensity of ships, providing a standardized and transparent measure for evaluating their energy efficiency and emissions performance. It is expected to be a dynamic indicator that can be updated periodically to reflect technological advancements and best practices. However many sectors of the maritime industry have expressed concerns regarding the unintended consequences of implementation of CII.

Technical Conference on Managing CII and Associated Challenges

In January 2024, the Royal Institution of Naval Architects (RINA) hosted the first Technical Conference on Managing CII and Associated Challenges at the IMO Headquarters in London. The conference resulted in bringing together 90+ industry stakeholders who exchanged feedback and insight on CII’s first year. The 2024 conference, supported by SPNL and the Nautical Institute, allowed the delegates an opportunity to hear from two keynote speakers – Mr. Tianbing Huang, Deputy Director, Sub-Division of Protective Measures, Marine Environment Division, IMO and Julien Boulland, Global market leader for sustainable shipping within Bureau Veritas Marine & Offshore, head-office commercial team, among many other presentations including from companies such as Ardmore Shipping;  d’amico società di navigazione spa; MSC Cruise Management (UK) Ltd; DNV; Mærsk Mc-Kinney Møller Center for Zero Carbon Shipping; International Chamber of Shipping; Royal Caribbean Group; and many more. See the full Technical Conference: Managing CII and Associated Challenges 2024 Programme.

The IMO must conduct a review of the CII before 1 January 2026, and following initial feedback, changes are expected to CII, though it is not yet clear on what the final outcome will be. The Royal Institution of Naval Architects is proposing a follow up conference in January 2025, and is inviting companies to share how they manage performance as a system, and to explain how continuous improvement in energy efficiency may be achieved.

Registration Fees

Before 1 October 2024 From 1 October 2024
RINA Member £700 + VAT £800 + VAT
RINA Non-Member £800 + VAT £900 + VAT
Concession (retired/students) £350 + VAT £350 + VAT
Authors £200 + VAT £200 + VAT
Additional Authors £700 + VAT £700 + VAT

The registration will be open shortly. If you would like to register your interest and be the first to know when the registration is open, please click here.


We invite papers on all related topics but not limited to:

  • Experience with managing and complying with CII
  • Challenges with implementation of corrective actions
  • Experience with effectiveness of corrective actions
  • Lessons learnt
  • Intersection with commercial and contractual issues
  • Best practice energy efficiency management approaches


Please submit your abstract here by 1st August 2024.


Cancellations received in writing up to two weeks before the event takes place will be subject to administration charge of £200. Cancellations received after this time cannot be accepted and are subject to the full event fee. Delegates may be substituted; however, this must be sent in writing and confirmed with the RINA Events Team. It may be necessary for reasons beyond our control to alter the content and timing of the programme. In the unlikely event that RINA cancels the event for any reason, our liability is limited to the return of the registration fee.

Personal Data

Please note that personal data, such as name and company, will be collected and provided in the delegate list format to the event attendees. No contact details will be included in the delegate list. If you would like to not be included in the list for any reason, please inform the RINA Events Team at


Please note that filming/photography will be taking place at this event for promotional and archival purposes. The photographs and recordings made are likely to appear on our website and social media. If you would prefer not to be photographed please let the Marketing team know at

Sponsorship Opportunities

RINA events provide the perfect opportunity for effective and highly targeted marketing. Sponsorship and exhibition opportunities exist for all of our conferences. For more information please click here.

If you have any questions regarding the conference, please get in touch with the RINA Events team at

Continual Professional Development

Attendance at the RINA conferences and courses qualifies as Continuing Professional Development. On completion of the course a CPD certificate will be issued.

Technical Conference: Managing CII and Associated Challenges 2025


21st January, 2025 - 22nd January, 2025    
All Day


IMO HQ, London
4 Albert Embankment, London, SE1 7SR