MDN 160/2025

Relocation of scientific buoy EPD-4 to Tung O Wan (Southeast Lamma waters)

ExpiredReceived 20 Aug 2025, 00:00 UTC

Warning text

Positions open on the map

MARINE DEPARTMENT NOTICE NO. 160/2025 (Establishment, Withdrawal and Changes of Aids to Navigation, Fairways, Anchorages & Other Port Facilities) Relocation of Scientific Buoy “EPD-4” in Southeast Lamma Waters NOTICE IS HEREBY GIVEN that the relocation works of the scientific buoy “EPD-4” will take place in Southeast Lamma waters with effect from 22 August 2025. 2. The scientific buoy “EPD-4” will be relocated from the existing location (WGS 84 Datum) (22-11.50N 114-09.62E) northwestward to the newly deployed location (WGS 84 Datum) (22-11.93N 114-09.36E) at Tung O Wan. 3. The particulars of the scientific buoy “EPD-4” are as follows: Name : EPD-4 Position (WGS 84 Datum) : 22-11.93N 114-09.36E Shape : Pillar Colour : Yellow Light Characteristics : Fl(5) Y.20s Top Mark : Yellow “X” Radar Reflector : Fitted Automatic Identification System : Fitted 4. Vessels navigating in the vicinity should proceed with caution and give a wide berth to the scientific buoy. 5. A drawing showing the position of the scientific buoy is attached to this Notice. This Notice supersedes Marine Department Notice No.47/2024. Ms. Lydia LAM Director of Marine (Acting) Marine Department Government of the HKSAR Date: 20 August 2025 Action File Ref.: L/M. No. 35/25 in MD-PD&PS-F01-075-01A-001A-P084

Location map

Open on the full map

Analysis

Expired

The scientific buoy EPD-4 was relocated northwestward in Southeast Lamma waters, with effect from 22 August 2025. New position given as 22-11.93N 114-09.36E (WGS 84) at Tung O Wan; previous position was 22-11.50N 114-09.62E. The buoy is a yellow pillar with Fl(5) Y.20s, yellow topmark X, radar reflector and fitted AIS. Vessels are advised to proceed with caution and give a wide berth.

Type: Aids to navigation · severity low
Feed: Aids to navigationAll warnings of this kind on the map, or as an API feed.
Location: Southeast Lamma waters, Tung O Wan
Validity: From 22 Aug 2025, 00:00 UTC
relocation works ... with effect from 22 August 2025
Hazards: new scientific buoy (navigation obstruction if close)
Cancels: Marine Department Notice No.47/2024

Worked out automatically from the warning text on 30 Sept 2026, 11:41 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
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

Back to Hong Kong