Toitū Te Whenua Land Information New Zealand, 155 The Terrace
Electronic Mail Address
Metadata Standard Name
ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata
Metadata Standard Version
Reference System Info
Reference System Identifier
NZ Scanned Sounding Sheet Index - Third Party
This index enables you to identify the third party georeferenced TIFF images of sounding sheets held by LINZ for the New Zealand coastal area. Some of these sounding sheets date back to the 1960s. The polygons comprising the index show the extent of each original hard copy sheet - not just the soundings shown on the sheet. The attributes attached to each polygon will enable you to view, amongst other attributes, the data and scale of the bathymetric data shown on the sounding sheet.
Please refer to the LINZ Bathymetric Index Data Dictionary for further information about the attributes of the dataset.
The georeferenced TIFF images are not downloadable from the LINZ Data Service.
Requests for sounding sheets should be sent to firstname.lastname@example.org with "Hydro Bathy Data" in the subject line. Requests must, as a minimum, specify the id, chart_no and serial_no as shown in the attribute attached to each polygon representing the sounding sheets of interest.
The provision of third party funded bathymetric data may be subject to some delay as LINZ confirms with the data owner that they are happy for their data to be released. The owner may attach conditions to the release of their data.
LINZ also holds images of publically funded New Zealand sounding sheets, which can be readily released under a Creative Commons licence for reuse. View our "NZ Scanned Sounding Sheet Index" dataset to request these sounding sheets.
The purpose of this dataset is to provide an index to the georeferenced TIFF images of third party sounding sheets held by LINZ for the New Zealand coastal area. The index enables customers to identify sounding sheets that they may be interested in requesting from LINZ for their own use.
The Royal New Zealand Navy and, more recently, LINZ have received bathymetric data from third parties which has been incorporated into nautical charts to enable New Zealand to meet its obligations under the International Convention for the Safety of Life at Sea.
Traditionally the bathymetric data collected during hydrographic surveys was rendered only as sounding sheets in hard copy form, often as A1 (or larger) sheets. More recently the bathymetric datasets have often been rendered as both sounding sheets and as digital data files, with the provision of sounding sheets diminishing over time. The sounding sheets have been scanned and georeferenced to make them available as TIFF images.
This index has been derived from the extents of the georeferenced images of third party sounding sheets and information held in LINZ’s hydrographic information database.
LINZ’s bathymetric data is usually based on minimum seabed depth (shoal-biased) values. This means if two soundings are close together we choose the lesser (shallower) one as safety is our primary concern.
Crown Copyright Reserved
Released under Creative Commons Attribution 4.0 International