A regular publication, usually weekly, listing corrections to charts and nautical publications: new wrecks, changed depths, moved buoys, new lights and dangers found by surveys. Mariners and chart agents apply them by hand to paper charts or by loading ENC updates. Offices also issue temporary and preliminary notices for short-lived changes and planned works, and local notices cover smaller waterways.
Our DtoN went in Monday, so the shoal should be in this week's Notice to Mariners.
Also heard as
- NtM
- NM
Related terms
DtoN
Danger to navigation: a newly found hazard reported urgently so charts and warnings change before the survey ends.
Nautical chart
A map of waters and coasts made for mariners, showing depths, hazards, aids to navigation and landmarks.
ENC
Electronic navigational chart: an official vector chart database used in ECDIS, built from objects with attributes.
Aids to navigation
Buoys, beacons, lights and electronic marks placed to guide vessels and warn of hazards.