A wide range of alternative fuels for ships are currently under discussion. The main aspects to compare a fuel to the existing benchmark of crude-oil-based ship fuels are the environmental impact, the fuel price, the available/needed infrastructure and availability, the regulatory framework, the required technology, the CAPEX and the part of the OPEX related to the use of the fuel, for instance exhaust gas cleaning.
The fuels presented here are in our view the most promising alternatives to conventional ship fuel.