Notices To Mariners (NM)

The bi-weekly issue of NOTICES TO MARINERS (NMs) promulgated by the Hong Kong Hydrographic Office enables mariners to update their HK charts.

NMs can be downloaded directly from this website. If you want to download the CURRENT ISSUE, or one of the PREVIOUS ISSUES, you can click against the NMs' issue number.

Current Issue

Issue No.	Date	Notices No.	Description
9	2026-04-24	26	Harbour – Central Part – To Kwa Wan Typhoon Shelter – NM Block.
		27	Harbour – Western Part – NE of Kau Yi Chau – Lighted Buoy.
		28	Urmston Road – Off Hong Kong International Airport – Obstructions.
		29(T)	South Eastern Approaches – Submarine Cable Laying Operations.
		30(T)	Ma Wan And Approaches – Castle Peak Fairway – Dredging Operations.
		31(T)	Urmston Road – N of Castle Peak Fairway – Seabed Reinstatement Works.

***Attention: If you want to print up-to-scale "Blocks for Chart" , you have to uncheck the "Shrink oversized pages to paper size" option in the Printer dialogue box of your PC.

Previous Issues

Chart Correction Record shows the account of the corrections affecting the HK charts and other publications.

Temporary Notices(T) concern marine works and activities that are going on currently within Hong Kong waters.

Corrections To Charts For Local Vessels 2025

Any sighting of new or suspect hazards to navigation, or damage or defects of Aids to Navigation, you can report directly to the Hong Kong Vessel Traffic Centre (Call-sign "MARDEP") on one of the HKVTS VHF channels, or call the Centre (24 Hours) at 2233 7801. You can also use the Hydrographic Note appended herewith to make the report.