MDN 189/2026

Sediment sampling works (jack-up barge) at Discovery Bay for about one month

No longer in forceReceived 14 Oct 2026, 00:00 UTCArchived 14 Nov 2026, 12:50 UTC

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MARINE DEPARTMENT NOTICE NO. 189/2026 (Marine Works) Sediment Sampling Works at Discovery Bay With immediate effect and for a period of approximately one month, sediment sampling works will be carried out at the following locations (WGS 84 Datum): (A) 22-17.77N 114-01.08E (B) 22-17.77N 114-01.10E (C) 22-17.77N 114-01.08E 2. The works will be carried out by one jack-up barge. One tugboat and one work boat will provide assistance. Vessels engaged in the works will display signals as prescribed in international and local regulations. 3. A working area of approximately 10 metres around the jack-up barge will be established. Yellow flashing lights will be installed at the four corners of the jack-up barge to indicate its position. 4. The hours of work will be from 0800 to 1800 hours. No works will be carried out on Sundays and public holidays. Vessels employed for the works will stay at the works locations outside the hours of work. 5. Vessels navigating in the vicinity should proceed with caution. 6. A drawing showing the works locations is attached to this Notice. Mr. S.F. WONG Director of Marine Marine Department Government of the HKSAR Date: 14 October 2026 Action File Ref.: L/M. No. 15/26 in MD-PD&PS-F01-075-01A-003-P076

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Analysis

No longer in force

Sediment sampling works will be carried out at Discovery Bay by a jack-up barge assisted by one tug and one work boat. Work is in effect from 14 October 2026 for approximately one month at three nearby positions. Working hours are 0800-1800 daily, with no works on Sundays and public holidays; vessels engaged will remain on site outside working hours. A 10 metre working area around the jack-up barge will be established and yellow flashing lights will mark its corners.

Type: Survey operations · severity moderate
Feed: Survey operationsAll warnings of this kind on the map, or as an API feed.
Location: Discovery Bay
Validity: From 14 Oct 2026, 00:00 UTC
Until 14 Nov 2026, 00:00 UTCWith immediate effect and for a period of approximately one month
Activity periods: ? - 14 Nov 2026, 00:00 UTC (Daily 0800-1800 hours; no works on Sundays and public holidays (working hours as stated))
Hazards: jack-up barge on site, sediment sampling works, working area (10 metres), tug and work boat operations, yellow flashing lights marking barge

Worked out automatically from the warning text on 14 Oct 2026, 11:38 UTC. It can be wrong: the official warning text is the authority.

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This warning's analysis also has:

Action for mariners
Keep-clear distance
Ships named
Lights and buoys affected
Translations
Nearby lights and rescue centres

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