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Admiralty Notices to Mariners (NMs)

Admiralty Charts and Publications can be maintained so that they are fully up-to-date for the latest available safety-critical navigational information through the world-renowned Admiralty Notices to Mariners (NMs) service.

Admiralty NMs contain all the corrections, alterations and amendments for the UKHO's worldwide series of Admiralty Charts and Publications and are published weekly as booklets, which are despatched directly from the UKHO.

Admiralty Notices to Mariners Online
The Admiralty Notices to Mariners Online service enables mariners to download NMs directly from this website.

To access NMs Online, click here.

Searchable NMs Database
The UKHO's searchable NMs database, known as NM Websearch, allows users to to search by Chart number for NM Text, Full Colour Blocks and Notes.

To use NM Websearch, click here, or go to: www.nmwebsearch.com.

Additional Notices to Mariners Services
For the latest information regarding update status of UK ENC cells in relation to UKHO NMs please click here.

In addition to Weekly Notices to Mariners, the UKHO produces the following supplementary NM Publications:

Annual Summary of Notices to Mariners
Notices to Mariners Block Corrections
Notices to Mariners Tracings

Guidance on how to apply the corrections contained within NMs to Admiralty Charts can be found in NP294 - 'How To Keep Your Admiralty Charts Up-To-Date'.

To enable mariners to keep a neat and formal record of all the NMs applied to a vessel's portfolio of charts, the UKHO recommends use of NP133A - Chart Correction Log.

Pricing of Notices to Mariners (NMs)

Weekly Notices to Mariners £2.17 per copy

Cumulative List of Admiralty Notices to Mariners (NP 234A and NP 234B) £2.17 per copy

Annual Summary of Admiralty Notices to Mariners (NP 247) (paper version) £6.20

Notices to Mariners Web Services FREE

Searchable Notices to Mariners Web Service FREE

Official Status of Admiralty Notices to Mariners
The Admiralty Notices to Mariners Bulletin (ANMB) is published by the UKHO. The UK Maritime & Coastguard Agency (MCA) accepts that both the paper and digital forms of the ANMB comply with carriage requirement for Notices to Mariners within Regulation 19.2.1.4 of the revised Chapter V of the Safety of Life at Sea (SOLAS) Convention, and the Merchant Shipping (Safety of Navigation) Regulations, both of which came into force 01 July 2002.