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	2025-04-25	23	Harbour – Central Part – Stonecutters Island – Depths.
		24(T)	Harbour – Western Part – N of West Lamma Fairway – Marine Site Investigation Works.
		25(T)	Harbour – Western Part – S of Kau Yi Chau – Marine Site Investigation Works.
		26(T)	Urmston Road – NE of Lung Kwu Chau – Submarine Outfall Maintenance 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.

Navigational Warning (Via Navtex) contains warning(s) valid for the northern part of the South China Sea.

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.