Notices to Mariners
Notices to Mariners
Notices to Mariners contain important navigational information. This includes chart updates, changes in buoyage warning of activities such as dredging.
Notices to Mariners are issued by several organisations, including the UK Hydrographic Office (UKHO), Trinity House and local harbour authorities. You can often find Local Notices to Mariners online, and many harbour authorities provide email updates you can subscribe to.
Chart updates and corrections
ADMIRALTY Small Craft Chart Service, a division of the UK Hydrographic Office, provides regular Notices to Mariners for keeping Small Craft Charts up to date. You can find information on the .
Imray has a similar on its website.
The UK Hydrographic Office (UKHO) publishes radio navigation warnings for NAVAREA 1 and the UK coast on the ADMIRALTY website. Many of these warnings are temporary, but others can remain in force for several weeks. These might then be superseded by Notices to Mariners.
Find Notices to Mariners
Chart publisher and local authority websites for Notices to Mariners: