MDN 115/2025

Marine site investigation east of Penny's Bay, Lantau Island - approx nine months

No longer in forceReceived 10 Jun 2025, 00:00 UTCArchived 30 Sept 2026, 12:45 UTC

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MARINE DEPARTMENT NOTICE NO. 115/2025 (Marine Works) Marine Site Investigation to the East of Penny’s Bay, Lantau Island With immediate effect and for a period of approximately nine months, marine site investigation works involving drilling of boreholes will be carried out within the area bounded by straight lines joining the following co-ordinates (WGS 84 Datum) from (A) to (F): (A) 22-19.69N 114-03.77E (B) 22-19.21N 114-04.53E (C) 22-18.43N 114-04.59E (D) 22-18.28N 114-04.13E (E) 22-18.89N 114-03.37E (F) 22-19.51N 114-03.54E 2. The works will be carried out by three flat-top barges, two jack-up barges and one dumb lighter. 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 barge and lighter will be established. Yellow marker buoys fitted with yellow flashing lights will be laid to mark the positions of the anchors extending from each flat- top barge and lighter. Yellow flashing lights will be installed at the four corners of each jack-up barge to indicate its position. 4. 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. 5. Vessels navigating in the vicinity should proceed with caution. 6. A drawing showing the works area is attached to this Notice. Ms. Lydia LAM Director of Marine (Ag.) Marine Department Government of the HKSAR Date: 10 June 2025 Action File Ref.: L/M. No. 16/25 in MD-PD&PS-F01-075-01A-003-P066

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Analysis

No longer in force

Cancelled by MDN 34/2026 (archived)

Marine site investigation with borehole drilling is taking place east of Penny's Bay, Lantau Island, within a polygon defined by six coordinates. Works are carried out by three flat-top barges, two jack-up barges, one dumb lighter and two tugs. A 50 metre working area around each barge/lighter will be marked by yellow buoys with yellow flashing lights; jack-up barges will display yellow flashing lights at their four corners. Hours of work 0700-1900 (no works on Sundays and public holidays).

Type: Survey operations · severity moderate
Feed: Survey operationsAll warnings of this kind on the map, or as an API feed.
Location: East of Penny's Bay, Lantau Island
Validity: From 10 Jun 2025, 00:00 UTC
Until 10 Mar 2026, 00:00 UTCWith immediate effect and for a period of approximately nine 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 given as 0700-1900 in notice; Sundays and public holidays no works))
Hazards: drilling of boreholes, anchored barges and lighter, marker buoys and flashing lights, tugs operating

Worked out automatically from the warning text on 30 Sept 2026, 12:18 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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