MDN 72/2026
Archivedanalysis
No longer in forceSeabed reinstatement works near Butterfly Bay, Tuen Mun
Seabed reinstatement works are underway near Butterfly Bay, Tuen Mun, carried out by a hopper barge with a tug and guard boat. A working area of about 50 metres around the hopper barge will be established with yellow marker buoys fitted with yellow flashing lights marking anchor positions. Works are round-the-clock and will last for approximately five months from immediate effect. This notice supersedes MDN 57/2026.
- Type
- Dredging / works · severity moderate
- Feed
- Offshore works, rigs and towingAll warnings of this kind on the map (contributors), or as an API feed: /api/v2/feeds/offshore/
- Location
- Butterfly Bay, Tuen Mun
- Validity
- From 17 Apr 2026, 00:00 UTC
Until 17 Sept 2026, 00:00 UTCWith immediate effect and for a period of approximately five months - Activity periods
- 17 Apr 2026, 00:00 UTC - 17 Sept 2026, 00:00 UTC (round-the-clock (24 hours daily))
- Hazards
- seabed reinstatement works, hopper barge and attendant vessels, anchors and anchor lines, marker buoys with flashing lights
- Cancels
- MDN 57/2026
Generated automatically from the warning text on 30 Sept 2026, 11:10 UTC. It can be wrong: the original warning below is the authoritative text.
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.
Keywords
- Geometry refsbounded, polygon
- Geometry phrasesarea bounded, bounded by