MDN 140/2025

SÉCURITÉ

Marine works (dredging, pipeline removal, tunnel/outfall) at Ma Tau Kok

No longer in forceReceived 16 Jul 2025, 00:00 UTCArchived 30 Sept 2026, 12:45 UTC

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MARINE DEPARTMENT NOTICE NO. 140/2025 (Marine Works) Marine Works at Ma Tau Kok With immediate effect and for a period of approximately five months, marine works involving reinstatement and dredging of seabed, removal of pipeline and construction of tunnel and outfall 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 shorelines: (A) 22-19.12N 114-11.90E (B) 22-19.06N 114-11.83E (C) 22-19.03N 114-11.73E (D) 22-19.05N 114-11.63E 2. The works will be carried out by two dumb lighters. Two tugboats will provide assistance. Vessels engaged in the works will display signals as prescribed in international and local regulations. 3. A working area of approximately 50 metres around each lighter will be established. Yellow marker buoys fitted with yellow flashing lights will be laid to mark the positions of the anchors extending from the lighters. 4. A silt curtain which is a large piece of netting to contain mud and sediments extending from the sea surface to the seabed will be established within the works area. Yellow marker buoys fitted with yellow flashing lights will be laid to mark the extent of the silt curtain. 5. 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. 6. Diving operations will be carried out from time to time during the hours of work. Vessel 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. 7. A drawing showing the works area is attached to this Notice. This Notice is an extension of Marine Department Notice No. 2/2025. Ms. Lydia LAM Director of Marine (Acting) Marine Department Government of the HKSAR Date: 16 July 2025 Action File Ref.: L/M No. 9/22 in MD-PD&PS-F01-075-01A-001A-P021

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Analysis

No longer in force

Marine works including seabed reinstatement and dredging, pipeline removal and construction of a tunnel and outfall at Ma Tau Kok. Works commenced with immediate effect from 16 July 2025 and are expected to continue for approximately five months. Operations use two dumb lighters and two tugboats, with a 50 metre working area around each lighter, marker buoys with yellow flashing lights and a silt curtain; diving will be conducted during working hours. Hours of work 0700-1900 (no work on Sundays and public holidays).

Type: Dredging / works · severity moderate
Feed: Offshore works, rigs and towingAll warnings of this kind on the map, or as an API feed.
Location: Ma Tau Kok, Hong Kong
Validity: From 16 Jul 2025, 00:00 UTC
Until 16 Dec 2025, 00:00 UTCWith immediate effect and for a period of approximately five months. The hours of work will be from 0700 to 1900 hours. No works will be carried out on Sundays and public holidays.
Activity periods: ? - ? (Daily 0700-1900 (hours of work). No works on Sundays and public holidays.)
Hazards: dredging, seabed reinstatement works, pipeline removal, construction of tunnel and outfall, anchors and marker buoys, silt curtain, diving operations, working vessels (dumb lighters and tugboats)

Worked out automatically from the warning text on 30 Sept 2026, 11:49 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

The action for mariners, the keep-clear distance, contacts, ships named, translations and the nearby lights and rescue centres come with Lagom and every higher plan, and with the API plans. The official warning text above is always free.

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Keywordsdiving operations divers working keep clear of

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