Story: Charting the sea floor

Bay of Islands

This modern chart of the Bay of Islands is published by Land Information New Zealand, the body responsible for producing official navigational charts. Point depths are given as well as contours (isobaths), which show underwater topography. Charts are vital aids for mariners, preventing them from grounding their vessels on sandbars, or damaging them on underwater rocks. The chart includes other aids to orientation such as navigation lights, lighthouses and buoys.

Using this item

Land Information New Zealand
Reference: NZ5125

This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.

Source: LINZ (not to be used for navigation)

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How to cite this page:

Lionel Carter, 'Charting the sea floor - Making and using charts', Te Ara - the Encyclopedia of New Zealand, (accessed 21 July 2024)

Story by Lionel Carter, published 12 Jun 2006