Temporary establishment of acoustic monitors for ecological survey

07 Dec 2021 / Hong Kong

For approximately 14 months, acoustic monitors will be temporarily established on the seabed [in the Central Waters of Hong Kong] in the following locations (WGS 84 Datum):
(A) 22° 20.250’N 114° 01.784’E
(B) 22° 19.161’N 114° 03.328’E
(C) 22° 17.368’N 114° 03.623’E
(D) 22° 17.074’N 114° 04.818’E
(E) 22° 16.660’N 114° 02.672’E
(F) 22° 15.500’N 114° 03.250’E
(G) 22° 13.052’N 114° 02.180’E
(H) 22° 11.525’N 113° 59.746’E
(I) 22° 10.881’N 114° 06.894’E

The acoustic monitor is an instrument for collecting marine mammal data. It will be fixed to an instrument of pyramid shape with a height of about 0.8 metre and a base of 1.0 metre by 1.0 metre on the seabed. Laying of the acoustic monitors will be carried out by a work boat and a working area of approximately 20 metres around the work boat will be established.

The hours of work will be from 0700 to 1900 hours from Monday to Sunday. The vessel employed for the operations will not stay in the works locations outside the hours of work.

Diving operations for retrieving data from the acoustic monitors will be carried out by the work boat in the above locations from time to time.

Vessel engaged in the operations will display signals as prescribed in international and local regulations.

Vessels navigating in the vicinity should proceed with caution, bearing in mind there are divers working in the locations.

(For information about operations in Hong Kong, contact GAC Hong Kong at [email protected])

Source: Government of the Hong Kong Marine Department Notice No. 207/2021

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