# Commission Implementing Regulation (EU) 2020/967 of 3 July 2020 laying down the detailed rules on the signal and implementation characteristics of acoustic deterrent devices as referred to in Part A of Annex XIII of Regulation (EU) 2019/1241 of the European Parliament and of the Council on the conservation of fisheries resources and the protection of marine ecosystems through technical measures, Annex: TECHNICAL SPECIFICATIONS AND CONDITIONS OF USE OF ACOUSTIC DETERRENT DEVICES

Extent: E+W+S+N.I.

Any acoustic deterrent devices used in application of Article 2(2) shall meet one of the following sets of signal and implementation characteristics:
Set 1
Set 2
Signal characteristics
Signal synthesis
Digital
Analogue
Tonal/wide band
Wide band/Tonal
Tonal
Source levels (max-min)
Re 1 μPa@1 m
145 dB
130-150dB
Fundamental frequency
(a) 20-160 KHz
Wide band sweeps
(b) 10KHz tonal
10 KHz
High frequency harmonics
Yes
Yes
Pulse duration (nominal)
300 ms
300 ms
Interpulse interval
(a) 4-30 seconds randomised
(b) 4 seconds
4 seconds
Implementation characteristics
Maximum spacing between two acoustic deterrent devices along nets
200 m with one acoustic device fixed at each end of the net (or combination of nets attached together)
100 m with one acoustic device fixed at each end of the net (or combination of nets attached together)

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Source: https://www.legislation.gov.uk/eur/2020/967/annex (the official version)
Page: https://openlegislation.uk/eu-regulation-2020-967/annex
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.