Image courtesy of iStockphoto Underwater acoustics for energy NPL is a world-leading measurement laboratory for underwater acoustics and has been working with the energy sector to measure underwater noise originating from offshore wind and tidal power installations. The measurements are important for monitoring any environmental effects that these man-made structures may have on the natural environment. One recent example of NPL's work involved measuring underwater noise during the construction of Sherringham Shoal offshore wind farm, located just off the coast of Norfolk, in a collaborative project with Loughborough University and Gardline. To characterise the noise, measurements were made at increasing distances from the site where support piles were being driven into the seabed. The mea

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