NTM has various meanings in the Admiralty category. Discover the full forms, definitions, and usage contexts of NTM in Admiralty.
A periodical notice issued by maritime administrations, or other competent authorities, regarding changes in aids to navigation, dangers to navigation, important new soundings, and, in general, all such information as affects nautical charts, sailing directions, light lists and other nautical publications.
AdmiraltyUpdates to charts and sailing directions regularly published by the Australian Hydrographic Office.
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