MDN 213/2025

SÉCURITÉ

Submarine cable laying from Tseung Kwan O to eastern HKSAR boundary for ~4 months

No longer in forceReceived 24 Oct 2025, 00:00 UTCArchived 30 Sept 2026, 12:45 UTC

Warning text

Positions open on the map

MARINE DEPARTMENT NOTICE NO. 213/2025 (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 four months, submarine cable laying operations will be carried out along the following co- ordinates (WGS 84 Datum) from (A) to (AN): (A) 22-17.11N 114-16.10E (B) 22-17.16N 114-15.96E (C) 22-17.11N 114-15.79E (D) 22-16.92N 114-15.54E (E) 22-16.66N 114-15.28E (F) 22-16.34N 114-15.08E (G) 22-16.18N 114-15.22E (H) 22-16.08N 114-15.46E (I) 22-15.54N 114-15.67E (J) 22-15.17N 114-15.72E (K) 22-14.83N 114-15.70E (L) 22-14.31N 114-15.69E (M) 22-14.05N 114-15.76E (N) 22-13.83N 114-15.98E (O) 22-13.21N 114-16.47E (P) 22-12.99N 114-16.73E (Q) 22-12.59N 114-16.91E (R) 22-12.25N 114-17.15E (S) 22-12.11N 114-17.16E (T) 22-11.72N 114-17.32E (U) 22-11.57N 114-17.54E (V) 22-11.50N 114-18.61E (W) 22-11.45N 114-18.90E (X) 22-11.49N 114-19.20E (Y) (Z) 22° 11.449’N 22-11.36N 114-19.60E 114° 19.855’E (AA) (AB) (AC) (AD) (AE) (AF) (AG) (AH) (AI) (AJ) (AK) (AL) (AM) (AN) 22° 11.163’N 22° 11.194’N 22° 11.061’N 22° 11.006’N 22° 11.167’N 22° 11.185’N 22° 11.300’N 22° 11.260’N 22° 11.164’N 22° 11.190’N 22° 11.249’N 22° 11.042’N 22° 10.786’N 22-10.70N 114-21.34E 114° 22.009’E 114° 22.764’E 114° 23.808’E 114° 24.474’E 114° 24.942’E 114° 25.661’E 114° 27.009’E 114° 27.391’E 114° 27.749’E 114° 29.492’E 114° 29.779’E 114° 29.987’E 114° 30.147’E 2. The works will be carried out by one special purpose vessel and one dumb lighter. Three tugboats 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. A working area of approximately 50 metres around the dumb 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 dumb lighter. 4. The hours of work will be round-the-clock. 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 divers working in the area. 6. A drawing showing the alignment of the cable is attached to this Notice. Mr. S.F. WONG Director of Marine Marine Department Government of the HKSAR Date: 24 October 2025 Action File Ref.: L/M No. 43/25 in MD-PD&PS-F01-075-01A-001A-P087

Location map

Open on the full map

Analysis

No longer in force

Cancelled by MDN 42/2026 (archived)

Submarine cable laying operations are in progress from Tseung Kwan O to the eastern boundary of the Hong Kong SAR. Works commenced with immediate effect on 24 October 2025 and will continue for approximately four months, carried out 24 hours daily. A special purpose vessel, a dumb lighter, tugs and marker buoys will be on site; diving operations will occur 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 SAR
Validity: From 24 Oct 2025, 00:00 UTC
Until 24 Feb 2026, 00:00 UTCWith immediate effect and for a period of approximately four months
Activity periods: 24 Oct 2025, 00:00 UTC - 24 Feb 2026, 00:00 UTC (round-the-clock)
Hazards: submarine cable laying, anchors and marker buoys, diving operations, working vessels (special purpose vessel, dumb lighter, tugs)

Position check: the text also mentions 22° 11.061’N 114° 22.764’E, 22° 11.006’N 114° 23.808’E, 22° 11.167’N 114° 24.474’E, 22° 11.185’N 114° 24.942’E, 22° 11.300’N 114° 25.661’E, 22° 11.260’N 114° 27.009’E, 22° 11.164’N 114° 27.391’E, 22° 11.190’N 114° 27.749’E, 22° 11.249’N 114° 29.492’E, 22° 11.042’N 114° 29.779’E, 22° 10.786’N 114° 29.987’E, 22-10.70N 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, 11:39 UTC. It can be wrong: the official warning text is the authority.

The whole analysis comes with Lagom

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.

See the plans

Keywordscable laying cable laying operation diving operations divers working keep clear of

Back to Hong Kong