The 11th session of the IMO Sub-Committee on Carriage of Cargoes and Containers (CCC 11) was held from 8 to 12 September 2025 finalizing interim guidelines for the use of hydrogen as fuel, among other developments.
As informed by DNV, CCC 11 has finalized interim guidelines for the safety of ships using hydrogen as fuel, further developing and describing the established design principles and functional requirements.
Interim guidelines for hydrogen as fuel completed
The guidelines include functional requirements and detailed provisions for all 20 chapters. The guidelines are limited to liquefied hydrogen concepts, as well as portable compressed and fixed compressed hydrogen concepts, all of which should be fitted on open deck.
Due to time constraints, no discussion took place on other guidelines such as the guidelines for the use of oil fuels with a flashpoint between 52°C and 60°C as fuel, the revision of the guidelines for methyl/ethyl alcohol as fuel, and the revision of the fuel cell guidelines.
Work on these guidelines will continue in a Correspondence Group and an intersessional Working Group, both reporting to CCC 12 in 2026.
CCC 11 has also updated its existing working plan for the development of new alternative fuels under the IGF Code, with the following items assigned as high priority:
- Revision of the interim guidelines for the safety of ships using methyl/ethyl alcohol as fuel (approval expected 2027)
- Revision of the interim guidelines for the safety of ships using fuel cell power installations (approval expected 2028)
- Development of the interim guidelines for the safety of ships using onboard carbon capture and storage systems (approval expected 2029)
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Source: DNV
