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Admiralty Notice to Mariners
Admiralty Notices to Mariners are issued as a weekly booklet by the UKHO and give details of all corrections to the Admiralty worldwide series of charts and publications as well as reprints of navigational warnings. These weekly Notices to Mariners are readily available from our office.
The UKHO's searchable NMs database, known as NM Websearch, allows users to search by Chart number for NM Text, Full Colour Blocks and Notes.
To use NM Websearch, go to: www.ukho.gov.uk
Chart Correction Tracings
This is an aid to the navigator or chart corrector for the correction of British Admiralty charts. They are issued weekly with corresponding Notices to Mariners and may be despatched either direct, or to your office for onward routeing to the vessel. Alternatively for customers of the new edition service the goods can be held in our office for inclusion in consignments containing charts and publications.
Although tracings have been in use by the Royal Navy and Admiralty Chart Agents for many years, it was the Chart Committee of the Chart and Nautical Instrument Trade Association (CNITA) that successfully negotiated with the Hydrographer of the Navy for them to become available to the merchant marine navigator and private user.
The CNITA tracing overlay correction service is available from all Admiralty Chart Agents who are members of the Association, and is now supplied to more than 5,000 vessels worldwide, each week. Navigating Officers welcome the tracings system for its accuracy and speed. Onboard chart correction time can be cut by 80% and Masters can now rest assured that their charts are kept continually up to date. |
