A) The acoustic instruments on NOAA Ship Oscar Dyson. These provide acoustic data at 18, 38, 70, 120, and 200 kHz. B) Acoustic instruments on Saildrone uncrewed surface vehicles. To save space and power, these only provide measurements at 38 kHz & 200 kHz

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A) The acoustic instruments on NOAA Ship Oscar Dyson. These provide acoustic data at 18, 38, 70, 120, and 200 kHz. B) Acoustic instruments on Saildrone uncrewed surface vehicles. To save space and power, these only provide measurements at 38 kHz & 200 kHz

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A) The acoustic instruments on NOAA Ship Oscar Dyson. These provide acoustic data at 18, 38, 70, 120, and 200 kHz. B) Acoustic instruments on Saildrone uncrewed surface vehicles. To save space and power, these only provide measurements at 38 kHz & 200 kHz photo copyright NOAA Fisheries taken at and featuring the Environment class

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