About Notices to Mariners

LINZ publishes Annual New Zealand Notices to Mariners and fortnightly New Zealand Notices to Mariners (NTMs).

Annual New Zealand Notices to Mariners are standing notices published in the New Zealand Nautical Almanac.

Fortnightly notices (New Zealand Notices to Mariners) advise mariners of important matters affecting navigational safety and are the authority for correcting New Zealand nautical charts.

The fortnightly edition contains:

  • corrections to be made to authoritative nautical publications such as the LINZ Hydrographic Charts and the NZ Nautical Almanac
  • details of the publication, withdrawal or cancellation of New Zealand nautical charts and nautical publications
  • changes to NZMariner, the LINZ Raster Navigation Chart folio
  • details of amendments to, release or withdrawl of British Admiralty nautical publications covering the New Zealand area of charting responsibility, such as the New Zealand Pilot (NP51).

The New Zealand Hydrographic Authority is authorised to produce the NZ Notices to Mariners under Maritime Rules Part 25. Notices to Mariners updates to NZMariner (LINZ Raster Navigation Chart folio) are available monthly.

The New Zealand Notices to Mariners are the authority for correcting New Zealand and British Admiralty charts of the New Zealand area of charting responsibility. The NZ Notices to Mariners on this site do not include Australian or British Admiralty Notices, and as a result do not meet the requirements as specified in Maritime Rules Part 25 Nautical Charts and Publications (pursuant to Section 36 of the Maritime Transport Act 1994).

Mariners are reminded to routinely monitor broadcast warnings, particularly the International SafetyNET or NAVTEX Service (part of the International Maritime Organization's Global Maritime Distress and Safety System Broadcasts). These can provide more timely access to important navigation safety information.

Mariners are requested to immediately inform LINZ Hydrographic Services of the discovery of new or suspected dangers to navigation, or shortcomings in charts and publications. This can be done on the Hydrographic Note web page.

Availability and frequency of NZ Notices to Mariners

NZ Notices to Mariners are available on this website in pdf format. You can also receive NZ Notices to Mariners via email - this link will take you to the sign-up page to receive Notices to Mariners via email.

About email distribution

LINZ delivers fortnightly email updates for NZ NtMs (Notices to Mariners) via independent mail management company Mailchimp.

If you have received a LINZ branded Notices to Mariners email from Mailchimp, you can trust that the email was sent on our behalf.