Question reference: S5W-36099
- Asked by: Mark Ruskell, MSP for Mid Scotland and Fife, Scottish Green Party
- Date lodged: 11 March 2021
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Current status: Answered by Ben Macpherson on 23 March 2021
Question
To ask Scottish Government what sound pressure level in decibels Marine Scotland has determined as the threshold for disturbance for small cetaceans and what the sound pressure level output is of each model of (a) acoustic deterrent device and (b) acoustic startle device manufactured by (i) Terecos, (ii) Genuswave, (iii) Lofitec, (iv) Ace Aquatec, (v) Airmar and (vi) OTAQ.
Answer
The Government applies the threshold of 120 dB re 1 µPa (rms) for the onset of potential disturbance for non-impulsive sounds.
The sound pressure levels of the different Acoustic Deterrent Devices and Acoustic Startle Devices are available from the device manufacturers.