The rapid decarbonisation of shipping is a key challenge that requires the industry to come together for the deployment of commercially viable deep sea zero emission vessels by 2030. Achieving this ambition demands the exploration of zero and low carbon fuels for development, testing, and scaling up to meet demand.

The zero and low carbon fuels currently under consideration for the decarbonisation of shipping are mostly being evaluated on price, availability and technical feasibility. However, we must also ensure that the fuels we are investing in, purchasing, and using to transport cargo are sustainable and avoid negative impacts.

The Sustainable Shipping Initiative (SSI) has identified a set of sustainability principles for the zero and low carbon fuels under consideration as substitutes for the conventional fossil-based marine fuels. While recognising the importance sustainable fuels and technologies have in the decarbonisation of shipping, this paper specifically focuses marine fuels.

Through this white paper, the SSI hopes to spark debate and dialogue around sustainable marine fuels as part of the industry’s decarbonisation journey and invites all interested stakeholders to engage by sharing their feedback below, or via email to