MDN 102/2026

SÉCURITÉ

Submarine cable laying operations from Tseung Kwan O to eastern HK SAR boundary

No longer in forceReceived 09 Jun 2026, 00:00 UTCArchived 30 Sept 2026, 12:45 UTC

Warning text

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MARINE DEPARTMENT NOTICE NO. 102/2026 (Marine Works) Submarine Cable Laying Operations from Tseung Kwan O to Eastern Boundary of the Hong Kong Special Administrative Region With immediate effect and for a period of approximately seven months, submarine cable laying operations will be carried out along the following co- ordinates (WGS 84 Datum) from (A) to (AG): (A) 22-17.12N 114-16.09E (B) 22-17.17N 114-15.97E (C) 22-17.12N 114-15.78E (D) 22-17.00N 114-15.66E (E) 22-16.93N 114-15.53E (F) 22-16.66N 114-15.26E (G) 22-16.46N 114-15.11E (H) 22-16.32N 114-15.05E (I) 22-16.15N 114-15.14E (J) 22-15.85N 114-15.40E (K) 22-15.65N 114-15.50E (L) 22-14.90N 114-15.50E (M) 22-14.62N 114-15.45E (N) 22-14.28N 114-15.45E (O) 22-13.82N 114-15.68E (P) 22-13.56N 114-16.00E (Q) 22-13.06N 114-15.88E (R) 22-12.61N 114-16.13E (S) 22-12.35N 114-16.25E (T) 22-12.16N 114-16.59E (U) 22-12.07N 114-16.80E (V) 22-11.66N 114-17.00E (W) 22-11.75N 114-17.75E (X) 22-11.64N 114-18.79E (Y) (Z) 22° 11.669’N 22-11.32N 114-19.00E 114° 23.743’E (AA) (AB) (AC) (AD) (AE) (AF) (AG) 22° 11.431’N 22° 11.404’N 22° 11.328’N 22° 11.418’N 22° 11.389’N 22° 11.301’N 22-11.19N 114-25.77E 114° 27.230’E 114° 27.482’E 114° 29.586’E 114° 29.763’E 114° 29.977’E 114° 30.147’E 2. The works will be carried out by one special purpose vessel, one flat- top work barge and one dumb lighter. Two tugboats and one transportation boat will provide assistance. The number of vessels engaged in the works will change from time to time to suit operational requirements. Vessels engaged in the works will display signals as prescribed in international and local regulations. 3. The hours of work will be round-the-clock. A working area of approximately 100 metres around the working vessels will be established. Yellow marker buoys fitted with yellow flashing lights will be laid to mark the positions of the anchors extending from the working vessels. 4. A silt curtain, extending from the sea surface to the seabed, will be established beside the flat-top work barge. The silt curtain is a large piece of netting used to contain mud and sediments. Yellow flashing lights will be laid to mark the extent of the silt curtain. 5. 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 diving operations in the area. 6. A drawing showing the cable alignment is attached to this Notice. Mr. S.F. WONG Director of Marine Marine Department Government of the HKSAR Date: 9 June 2025 Action File Ref.: L/M No. 15/26 in MD-PD&PS-F01-075-01A-001A-P095

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Analysis

No longer in force

Submarine cable laying operations commenced from Tseung Kwan O to the eastern boundary of the Hong Kong SAR. Works commenced with immediate effect from 9 June 2025 and are expected to continue for approximately seven months, carried out round-the-clock. A 100 metre working area around the vessels will be established, with yellow marker buoys and yellow flashing lights marking anchors and the extent of a silt curtain; diving will take place from time to time.

Type: Cable / pipeline work · severity moderate
Feed: Cable and pipeline operationsAll warnings of this kind on the map, or as an API feed.
Location: From Tseung Kwan O to the eastern boundary of the Hong Kong Special Administrative Region
Validity: From 09 Jun 2025, 00:00 UTC
Until 09 Jan 2026, 00:00 UTCWith immediate effect and for a period of approximately seven months. Date: 9 June 2025
Activity periods: 09 Jun 2025, 00:00 UTC - 09 Jan 2026, 00:00 UTC (round-the-clock)
Hazards: submarine cable laying, anchors and marker buoys, silt curtain, diving operations, work vessels and tows

Position check: the text also mentions 22° 11.669’N 114° 23.743’E, 22° 11.404’N 114° 27.230’E, 22° 11.328’N 114° 27.482’E, 22° 11.418’N 114° 29.586’E, 22° 11.389’N 114° 29.763’E, 22° 11.301’N 114° 29.977’E, 22-11.19N 114° 30.147’E, which may not be drawn on the map. Check the original text.

Worked out automatically from the warning text on 30 Sept 2026, 10:59 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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Keywordscable laying cable laying operation diving operations keep clear of

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