HOW TO CORRECT THE AHP20 – PRINT VERSION
Significant information critical to the mariner is amended by Notices to Mariners (NtM). The number in the
titling and the paragraph numbers marking each paragraph helps with identification of which text needs
correcting.
If there are corrections to the AHP20, they will be published online in the NtM which are published fortnightly
on the following website.
Website: www.hydro.gov.au/n2m/notices.htm
It is recommended that the corrections be attached to the pages in question where possible, but the note
pages at the end of each chapter can be utilised as an area to store corrections. If the corrections are too
large, a blank page can be glued along the spine of the publication, adjacent to the page that is being
corrected.
It is recommended that text deletions be crossed out and any new text be indicated by an arrow at the
row or paragraph for the correction. All corrections are to be recorded in the Record of Amendments table
below.
More information can be found in the Australian Hydrographic Publication (AHP) 24, Chart and Publication
Maintenance Handbook, available at www.hydro.gov.au.
NtM example:
Australia – Products – Amendment to Mariner’s Handbook for Australian Waters (AHP20)
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