INFORMATION

Notice to Mariners
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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.

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  • 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

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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.

  • 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.

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