Marine Works Off Pak Mong, Lantau Island

16 Mar 2021 / Hong Kong

For approximately 12 months, marine works involving construction of cofferdam, ground investigation, laying of geotextile and sand blankets, deep cement mixing, hydrographic survey, seawall construction and removal of rock armour will be carried out within the area bounded by straight lines joining the following co-ordinates (WGS 84 Datum) from (A) to (D) and the adjacent shoreline:
(A) 22° 17.995’N 113° 58.147’E
(B) 22° 18.101’N 113° 58.149’E
(C) 22° 18.220’N 113° 58.351’E
(D) 22° 18.170’N 113° 58.536’E

The works will be carried out by a flotilla of vessels including jack[1]up barges, cement supply barges, anchor boats, spilt hopper barges, sand discharge barge, backhoe barges, flat top barges, crane barge, dredger, tugboat and work boat. The number of vessels engaged in the works will change from time to time to suit operational requirements.

A working area of approximately 50 metres will be established around each working vessel. Yellow marker buoys fitted with yellow flashing lights will be laid to mark the positions of the anchors extending from the working vessels.

Yellow flashing lights will be installed at the four corners of the jack-up barges to indicate the positions of the jack-up barges.

Silt curtains, extending from the sea surface to the seabed, will be established around the boundary of the works area. The silt curtain is a large piece of netting used to contain mud and sediments. Yellow marker buoys fitted with yellow flashing lights will be laid to mark the extent of the silt curtains.

The hours of work will be from 0700 to 2300 hours including Sundays and public holidays. Vessels employed for the works will stay in the works area outside the hours of work.

Diving operations will be carried out from time to time during the hours of work.

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

Vessels navigating in the vicinity should proceed with caution and keep clear of the works area at slow speed, bearing in mind there are divers working in the area.

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

Source: Government of the Hong Kong SAR Marine Department Notice No.50/2021

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