![]() The other challenge is a relative lack of infrastructure for distributing pure hydrogen (of any colour), which makes it rather difficult to fill up during a cruise. This gives rise to different ‘colours’ of fuel, ranging from green to grey, brown and black – a loose measure of how environmentally friendly they are. Would you make the switch? We ask two sailors who have looked at how the real-world numbers stack up on… ![]() The drawback here is that methanol reactions generate CO2 and ammonia produces polluting nitrous oxides.Īll these fuels can be produced industrially from fossil fuels, with the associated emissions, or from water and air using renewable energy. They naturally contain less usable energy than pure hydrogen, so are less efficient, but being stored in standard fuel tanks makes them easier to integrate with current designs of boat. It makes perfect sense from an environmental perspective.’ Hydrogen powered boats: Liquid fuelĪnother approach is to use a liquid fuel that is rich in hydrogen – like methanol or ammonia. ‘We’re not looking at replacing the diesel engine – although that is the ultimate goal. Using gaseous hydrogen as a fuel leads French marine fuel cell developer EODev to be cautious about marine applications. Using a 350-bar system, the weight of the fuel cell and the hydrogen storage system still comes in below that of a traditional diesel set-up, but it requires more volume and it costs more. ‘In the near future, there’ll be hundreds of 32 foot hydrogen powered boats,’ promises Daedalus founder, Michael Reardon
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