MDN 257/2025

SÉCURITÉ

Submarine pipeline repair works north of Sunshine Island, approx four months

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

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MARINE DEPARTMENT NOTICE NO. 257/2025 (Marine Works) Submarine Pipeline Repair Works to the North of Sunshine Island With immediate effect and for a period of approximately four months, submarine pipeline repair works will be carried out within the area bounded by straight lines joining the following co-ordinates (WGS 84 Datum) from (A) to (D): (A) 22-16.32N 114-02.88E (B) 22-16.26N 114-02.91E (C) 22-16.24N 114-02.85E (D) 22-16.30N 114-02.83E 2. The works will be carried out by one dumb lighter. Two tugboats and one dry cargo vessel 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 the 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 lighter. 4. Silt curtains which are large pieces 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 curtains. 5. The hours of work will be from 0700 to 1900 hours daily. 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. Vessels navigating in the vicinity should proceed with caution and keep clear of the works area at slow speed, bearing in mind that there are divers working in the area. 7. A drawing showing the works area is attached to this Notice. This Notice supersedes Marine Department Notice No. 93/2025. Mr. S.F. WONG Director of Marine Marine Department Government of the HKSAR Date: 16 December 2025 Action File Ref.: L/M. No. 23/24 in MD-PD&PS-F01-075-01A-003-P058

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Analysis

No longer in force

Submarine pipeline repair works commenced north of Sunshine Island on 16 December 2025 and will continue for approximately four months. A dumb lighter, two tugboats and one dry cargo vessel will be engaged; a 50 metre working area around the lighter will be marked by yellow buoys with flashing yellow lights. Silt curtains will be deployed and diving operations will take place from time to time during working hours. Vessels should proceed with caution and keep clear at slow speed during the hours of work.

Type: Cable / pipeline work · severity moderate
Feed: Cable and pipeline operationsAll warnings of this kind on the map, or as an API feed.
Location: North of Sunshine Island
Validity: From 16 Dec 2025, 00:00 UTC
Until 16 Apr 2026, 00:00 UTCWith immediate effect and for a period of approximately four months.
Activity periods: 16 Dec 2025, 07:00 UTC - 16 Apr 2026, 19:00 UTC (daily 0700-1900 hours (hours of work as stated in notice))
Hazards: submarine pipeline repair works, diving operations, anchor marker buoys, silt curtains, vessels and tugs operating
Cancels: Marine Department Notice No. 93/2025

Worked out automatically from the warning text on 30 Sept 2026, 11:37 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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