Driving change

Harry Besley with support team at a stopover, Port Ellen, Islay

The move to net zero requires a rethink for the way marine vessels are powered but, as Sandy Neil reports, there are a number of alternatives to consider.

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Natural defences

Young salmon

Researchers have charted how low levels of hydrogen sulphide in RAS systems trigger a defensive reaction in salmon – and their findings could be used to help manage the risks associated with this toxic gas.

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