According to the two Brussels-based environmental NGOs, the large positive effect that reduced speeds can have on greenhouse gas (GHG) emissions is well known. What has received less attention is the positive effect such a change in speeds would have on nature and human health.
The report describes how a modest 20% reduction in ship speed would reduce underwater noise pollution by 66%, and the chance of a fatal collision between a ship and a whale by a massive 78%. Both noise and whale strikes are having a serious impact on the health of the marine environment.