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Trimming of underwater high spots south of Shek Kwu Chau

  • calendar

    12 July 2018

  • location

    Hong Kong

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For approximately 3 months, trimming operations for underwater high spots will be carried out in the area bounded by straight lines joining the following co-ordinates (WGS 84 Datum) from (A) to (F):
(A) 22 deg. 09.489’N / 113 deg. 59.172’E 
(B) 22 deg. 09.489’N / 113 deg. 59.521’E
(C) 22 deg. 09.272’N / 113 deg. 59.521’E
(D) 22 deg. 09.272’N / 113 deg. 59.056’E
(E) 22 deg. 09.380’N / 113 deg. 59.056’E
(F) 22 deg. 09.380’N / 113 deg. 59.172’E

The works will be carried out by one crane barge.  One hopper barge, one work boat and two tugboats will provide assistance.  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 the crane barge and hopper barge.  Yellow marker buoys fitted with yellow flashing lights will be laid to mark the positions of the anchors extending from the crane barge and hopper barge.

The hours of work will be from 0700 to 1900 hours.  No works will be carried out on Sundays and public holidays.  Vessels employed for the works will stay in the works area outside the hours of work.

Silt curtains will be established within the works area.  A silt curtain is a large piece of netting used to contain mud and sediments.

Vessels 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 the changing depths in the works area.

(For information about operations in Hong Kong, contact GAC Hong Kong at shipping.hongkong@gac.com)

Source: Government of the Hong Kong SAR Marine Department Notice No.113 of 2018

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