A passive acoustic drifter for radiated noise measurements of NOAA Fisheries survey vessels

The National Oceanic and Atmospheric Administration’s (NOAA) Fisheries Survey Vessel (FSV) fleet, beginning with the NOAA ship Oscar Dyson, was constructed to meet radiated noise recommendations for research vessels described by the International Council for the Exploration of the Sea (hereafter ICES recommendation, Mitson 1995). These recommendations apply over a broad frequency range to limit fish avoidance of vessels and reduce interference with active acoustic instrumentation commonly used in fisheries surveys.