MDN 148/2026

Marine site investigation off Tap Shek Kok with working area and marker buoys

Activeuntil 20 Nov 2026, 00:00 UTC (in 5 days)Received 20 Aug 2026, 00:00 UTC

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MARINE DEPARTMENT NOTICE NO. 148/2026 (Marine Works) Marine Site Investigation off Tap Shek Kok With immediate effect and for a period of approximately three months, marine site investigation works involving drilling of vibrocores will be carried out within the area bounded by straight lines joining the following co-ordinates (WGS 84 Datum) from (A) to (E): (A) 22-23.24N 113-54.54E (B) 22-23.16N 113-54.68E (C) 22-22.55N 113-54.86E (D) 22-22.44N 113-54.56E (E) 22-23.21N 113-54.31E 2. The works will be carried out by one flat-top barge. 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 the flat-top barge will be established. Yellow marker buoys fitted with yellow flashing lights will be laid to mark the positions of the anchors extending from the flat-top barge. 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. Mr. S.F. WONG Director of Marine Marine Department Government of the HKSAR Date: 20 August 2026 Action File Ref.: L/M. No. 12/26 in MD-PD&PS-F01-075-01A-003-P075

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Analysis

Activeuntil 20 Nov 2026, 00:00 UTC (in 5 days)

A marine site investigation involving drilling of vibrocores is underway off Tap Shek Kok. Works by a flat-top barge with two tugboats will continue for approximately three months from 20 August 2026. A 50 metre working area around the barge will be marked; yellow marker buoys with yellow flashing lights will mark anchor positions. Working hours are 0700-1900 (no work on Sundays and public holidays); vessels should proceed with caution.

Type: Survey operations · severity moderate
Feed: Survey operationsAll warnings of this kind on the map, or as an API feed.
Location: off Tap Shek Kok
Validity: From 20 Aug 2026, 00:00 UTC
Until 20 Nov 2026, 00:00 UTCWith immediate effect and for a period of approximately three months. Date: 20 August 2026. Hours of work 0700 to 1900 hours. No works on Sundays and public holidays.
Activity periods: ? - ? (Daily 0700-1900 hours (as stated).)
Hazards: marine site investigation (vibrocore drilling), anchored flat-top barge, tug assistance, marker buoys with flashing lights, 50 metre working area around barge

Worked out automatically from the warning text on 30 Sept 2026, 10:40 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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