Incoming hydrographic data is immediately assessed for vital information. Urgent updates are issued as Navigational Warnings (RNW's) or chart-updating Notices to Mariners (NMs)
Keep informed about safety critical information. Search and download Notices to Mariners from here.
Hydrographic Notes are available to download here, for informing us of any navigationally significant information.
We act as the NAVAREA I (NE Atlantic) Co-ordinator for the IMO) and IHO Worldwide Navigational Warning Service and also as the United Kingdom National Co-ordinator for issuing coastal warnings.
The Admiralty Information Overlay is a digital data set that is designed to be displayed over ENCs in ECDIS and other chart display systems to provide additional information to the navigator.
The Admiralty Updating Service is an on-line service for subscribers to Admiralty digital chart services that offers immediate access to the latest digital chart updates over the Internet.
Admiralty's digital publications for Lights and Radio Signals can be updated online using this dedicated website.
Find an Admiralty distributor
Admiralty products and services are available through our truly global network of distributors. To discuss your requirements further or make a purchase, please follow the link to find your nearest Admiralty distributor.
© Crown Copyright 2014 United Kingdom Hydrographic Office