Carbon-free renewable fuels will need to be ready to trial by 2030 if shipping hopes to meet the IMO’s 2050 target of halving CO2 emissions, according to engine maker Winterthur Gas & Diesel (WinGD).

Speaking at an event organised by the Swiss manufacturer — Roadmap to 2050 — company senior emissions and sustainability expert German Weisser said that even from the most optimistic perspective, new efficiencies and logistics in shipping will bring carbon savings of only 10% to 20%, so new fuels will be needed.