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• Marine geospatial information

  Data about the marine environment which helps us understand how to protect our biodiversity and ecosystems.
  Guidance

  • Marine information

• Updating our charts

  The work we’re doing to update New Zealand’s nautical charts
  Page

  • Marine information

• Marine Geospatial Information stocktake guidance

  In New Zealand, Marine Geospatial Information (MGI) is collected by various public and private organisations. Knowing what data exists is the first step enabling data accessibility and reusability and increasing the value of marine geospatial investments.
  Resource

  • Marine information

• Sunrise & sunset tables - New Zealand Nautical Almanac 2022/23

  Resource

  • Marine information

• Tory Channel/Kura Te Au Entrance tide diagrams - New Zealand Nautical Almanac 2022/23

  Resource

  • Marine information

• Hydrographic survey

  Learn about our hydrographic survey programme to map the sea floor.
  Page

  • Marine information

• New Zealand Nautical Almanac (NZ 204) - Full version

  You can download a digital version of the entire New Zealand Nautical Almanac (NZ 204) from this page.
  Page

  • Marine information

• New Zealand Nautical Almanac 2023/24 Edition | NZ 204

  By law, ships need to carry official charts and navigation publications needed for their voyage - this includes the Almanac, an annual publication that is updated fortnightly through our Notices to Mariners.
  Resource

  • Marine information

• Astronomical phenomena - New Zealand Nautical Almanac 2023/24

  Including details of the Earth’s orbit, solar and lunar eclipses, times when the Moon is closest and furthest from Earth (lunar perigee and apogee), phases of the Moon and planet visibility.
  Resource

  • Marine information

• Te Aumiti / French Pass tide diagrams - New Zealand Nautical Almanac 2023/24

  Resource

  • Marine information

• Methods to find times or heights between high & low waters at any port - New Zealand Nautical Almanac 2023/24

  Times and heights between high and low waters at Standard and Secondary Ports can be calculated by using the method described in the printable documents attached.
  Resource

  • Marine information

• General information sheet about NZ lights - New Zealand Nautical Almanac 2022/23

  Toitū Te Whenua maintains this list of lights to aid maritime navigation.
  Resource

  • Marine information

• NZ Annual Notices to Mariners - New Zealand Nautical Almanac 2023/24

  Annual Notices to Mariners are standing notices that are issued each year in the New Zealand Nautical Almanac. Changes to Annual Notices are notified through the fortnightly edition of Notices to Mariners.
  Resource

  • Marine information

• Maritime contacts - New Zealand Nautical Almanac 2023/24

  Resource

  • Marine information

• New editions of navigational charts for Auckland harbour released

  New editions of two navigational charts for Auckland harbour have recently been released, providing enhanced safety as Auckland mariners take to the water in significant numbers over the summer sailing season.
  News

  • Marine information

• Hydrographic Risk Assessment - Vanuatu

  This hydrographic risk assessment allows the Vanuatu Government, with the support of regional charting authorities, to come to a conclusion about the nature and scope of chart improvement surveys in Vanuatu. It provides recommendations and conclusions to…
  Resource

  • Marine information

• Hydrographic Risk Assessment - Tokelau

  This report details the hydrographic risk assessment of the waters around Tokelau, based on the Land Information New Zealand (LINZ) Hydrographic Risk Assessment Methodology as published in Report Number 15NZ322 Issue 031. The inability to conduct an in-…
  Resource

  • Marine information

• Tide prediction formats

  Find out about tide prediction formats and how to interpret the values.
  Guidance

  • Marine information

• Standard port datum descriptions

  Find New Zealand's standard port chart datums. These are the datums used for stating the depths of the sea on nautical charts, including the level of the water at ports.
  Guidance

  • Marine information

• Te Aumiti / French Pass

  Find tidal stream predictions and diagrams for Te Aumiti / French Pass.
  Page

  • Marine information

• Tides around New Zealand

  New Zealand's tidal regime is semi-diurnal, so on most days two high and two low tides occur at any location.
  Guidance

  • Marine information

• Tides

  Learn about tidal theory and the different types of tides around New Zealand.
  Guidance

  • Marine information

• Safety at sea

  Toitū Te Whenua charts New Zealand's waters and coast to help commercial and recreational mariners safely navigate our waters.
  Page

  • Marine information

• Other sea level data

  Other sea level data is available from LINZ (on behalf of other organisations) and from other sources.
  Page

  • Marine information

• List of lights

  Toitū Te Whenua maintains this list of lights to aid maritime navigation.
  Page

  • Marine information

• Applying corrections to the Nautical Almanac

  Page 2 of the New Zealand Nautical Almanac (NZ 204) provides a table for recording that amendments, communicated through fortnightly Notices to Mariners (NtMs) have been made to the Almanac.
  Page

  • Marine information

• Search chart retailers

  Official nautical charts are available for purchase from approved chart retailers.
  Page

  • Marine information

• HYPLAN - New Zealand Long-Term Prioritised Hydrographic Survey Plan

  Land Information New Zealand (LINZ), the New Zealand Hydrographic Authority (NZHA) presents the second edition of New Zealand’s long-term national hydrographic survey plan – HYPLAN.
  Resource

  • Marine information

• HYSPEC Contract Specifications for Hydrographic Surveys Version 2.0

  As a contracting government to the International Convention for the Safety of Life at Sea (SOLAS), New Zealand has an obligation to arrange to collect and compile hydrographic data, and to publish, disseminate and update all nautical information necessary…
  Resource

  • Marine information

• Charts

  Learn about keeping your nautical charts up-to-date with our Notices to Mariners.
  Guidance

  • Marine information

• Methods to find times or heights between high & low waters at any port - New Zealand Nautical Almanac 2022/23

  Times and heights between high and low waters at Standard and Secondary Ports can be calculated by using the method described in the printable documents attached.
  Resource

  • Marine information

• NZ Annual Notices to Mariners - New Zealand Nautical Almanac 2022/23

  Annual Notices to Mariners are standing notices that are issued each year in the New Zealand Nautical Almanac. Changes to Annual Notices are notified through the fortnightly edition of Notices to Mariners
  Resource

  • Marine information