UKHO has update the guide for Harbour Master for hydrographic and maritime information. This is the fourth edition of the guide and supports harbour masters and port professionals in submitting accurate, timely hydrographic data for inclusion in ADMIRALTY products as Notices to Mariners (NMs), New Editions or other updates.
It outlines how to report changes to bathymetry, port limits, Aids to Navigation (AtoN), and dredged areas — helping ensure ADMIRALTY charts and publications remain up to date and reliable for mariners.
Developed by the UK Hydrographic Office (UKHO), in collaboration with the UK Harbour Masters’ Association (UKHMA), this updated edition reflects technological advances in surveying and data exchange, and directly supports Section 10.4 (Conservancy) of the Port and Marine Facilities Safety Code. It has also been specifically referenced and linked in Section 10.8.1 of the Guide to Good Practice as a recommended tool for ensuring effective hydrographic reporting.
With ports playing a vital role in the safety and efficiency of maritime trade, this guide reinforces the importance of local data in maintaining a global standard of navigational safety.