What is Hydrographic Notes?

Mariners are advised to notify and send hydrographic note  if  discover or suspect:
  • New dangers to navigation
  • Changes in aids to navigation
  • Errors in any navigational publication.

 The Mariner’s Handbook (NP 100) Chapter 8 contains details of the information you’ll need to send.

If practicable you should also contact the originating hydrographic office when navigating on IMO-approved non-UKHO nautical charts. Please also comply with national and international law when forwarding such reports.

To see sample of Hydrographic note, Please click here.