This set is a compilation of raster imagery at various scales. All data contained is available for download from the LINZ Data Service. THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION. Note: This set contains charts at a variety of scales. Use of LDS web map tile services for this set is not recommended as the scaled charts overlap. The hydrographic raster data made available through the LINZ Data Service is based on the Paper Navigational Charts published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). The online New Zealand Chart Catalogue provides more detailed and the most up to date information about New Zealand charts: [New Zealand Chart Catalogue] (http://www.linz.govt.nz/sea/charts/paper-charts/nz202-chart-catalogue). Information on symbols and abbreviations used on nautical charts: [Symbols and Abbreviations] (http://www.linz.govt.nz/sea/charts/paper-charts/symbols-terms-abbreviations-used-charts). Hydrographic standards and specifications for nautical charts and publications: [Standards and Specifications] (http://www.linz.govt.nz/sea/charts/hydrographic-standards-technical-specifications).

This layer contains depth information in gridded format captured by multibeam sonar in 2013 as part of HS38 - Bay of Islands. The data was collected for Toitū Te Whenua Land Information New Zealand (LINZ) and for which the survey took place from 9 April to 2 June 2013. Data management and distribution is by LINZ. Data comprises a gridded depth model as tif or ascii tiles in UTM projection. Vertical accuracy is +/- 0.2m (95%) Horizontal accuracy is +/- 1.4m (95%) Vertical datum is Approximate Lowest Astronomical Tide. The source data used to create the depth model may be of a higher resolution/density than the model. This data can be supplied on request and available resolutions be discovered through the [NZ Bathymetric Surface model Index](https://data.linz.govt.nz/layer/95574-nz-bathymetric-surface-model-index/).

This layer contains depth information in gridded format captured by multibeam sonar in 2021. The data was collected for Toitū Te Whenua Land Information New Zealand (LINZ) and for which the survey took place from 18 November to 14 December 2021. Data management and distribution is by LINZ. Data comprises a gridded depth model as tif or ascii tiles in UTM projection. Vertical accuracy is +/- 0.5m (95%) Horizontal accuracy is +/- 1m (95%) Vertical datum is Approximate Lowest Astronomical Tide. The source data used to create the depth model may be of a higher resolution/density than the model. This data can be supplied on request.

This set is a compilation of raster imagery at various scales. All data contained is available for download from the LINZ Data Service. THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION. Note: This set contains charts at a variety of scales. Use of LDS web map tile services for this set is not recommended as the scaled charts overlap. The hydrographic raster data made available through the LINZ Data Service is based on the Paper Navigational Charts published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). The online New Zealand Chart Catalogue provides more detailed and the most up to date information about New Zealand charts: [New Zealand Chart Catalogue] (http://www.linz.govt.nz/sea/charts/paper-charts/nz202-chart-catalogue). Information on symbols and abbreviations used on nautical charts: [Symbols and Abbreviations] (http://www.linz.govt.nz/sea/charts/paper-charts/symbols-terms-abbreviations-used-charts). Hydrographic standards and specifications for nautical charts and publications: [Standards and Specifications] (http://www.linz.govt.nz/sea/charts/hydrographic-standards-technical-specifications).

In collaboration between Korea Polar Research Institute and NIWA, an oceanographic mooring was deployed close to the bottom depth near the Drygalski Ice Tongue (lat:-75.275700, lon:164.067300) on 9 March 2018 as a part of the ANA08C research cruise, and it was recovered on 3 January 2019. To monitor physical properties (Temperature, Salinity, Current) of deep water near the Drygalski Ice Tongue. GET DATA: https://kpdc.kopri.re.kr/search/9826749c-376a-4751-8812-702cec76c4c0

This layer contains depth information in gridded format captured by multibeam sonar in 2016/17 as part of HS52 - Approaches to Auckland. The data was collected for Toitū Te Whenua Land Information New Zealand (LINZ) and for which the survey took place from 26 October 2016 to 17 February 2017. Data management and distribution is by LINZ. Data comprises a gridded depth model as tif or ascii tiles in UTM projection. Vertical accuracy is +/- 0.2m (95%) Horizontal accuracy is +/- 0.5m (95%) Vertical datum is Approximate Lowest Astronomical Tide. The source data used to create the depth model may be of a higher resolution/density than the model. This data can be supplied on request and resolutions be discovered through the [NZ Bathymetric Surface model Index](https://data.linz.govt.nz/layer/95574-nz-bathymetric-surface-model-index/).

The mooring was deployed from February 2017 through February 2018 at 74.97° S, 163.96° E, approximately 7km east of the Nansen Ice Shelf in a region of TNB. The purpose of this study was to utilize data from a uniquely positioned and densely instrumented mooring to calculate HSSW production rates in TNB from continuous, in-situ observations. Moored instrumentation consisted of 7 SeaBird Electronics conductivity and temperature (SBE37-SM/SMP MicroCAT) sensors at depths of 47, 95, 119, 144, 168, 219, and 360 m and an upward-facing 600 kHz Nortek Acoustic Wave and Current (AWAC) profiler at 37 m depth, collecting both current velocity profiles in the upper ~35 m of the water column as well as Acoustic Surface Tracking (AST) measurements. Temperature and salinity measurements were validated against a shipboard conductivity-temperature-depth (CTD) cast performed upon deployment of the mooring. Temperature and salinity at 47 m and 95 m were additionally validated against a CTD cast performed upon recovery of the mooring. Full details of methods can be found in https://doi.org/10.1038/s41467-023-43880-1 GET DATA: ukm2103@columbia.edu

In collaboration between the Korea Polar Research Institute and NIWA, an oceanographic mooring was deployed close to the bottom depth near the Drygalski Ice Tongue (lat:-75.275700, lon:164.067300) on 5 February 2017 as a part of the ANA07C research cruise, and it was recovered on 5 March 2018. To monitor physical properties (Temperature, Salinity, Current) of deep water near the Drygalski Ice Tongue. GET DATA: https://kpdc.kopri.re.kr/search/023da26f-ba92-43ee-ab54-8ec5fbcf133b

This layer contains depth information in gridded format captured by multibeam sonar in 2021 as part of HS75 - Approaches to Napier. The data was collected for Toitū Te Whenua Land Information New Zealand (LINZ) and for which the survey took place from 10 October to 14 November 2021. Data management and distribution is by LINZ. Data comprises a gridded depth model as tif or ascii tiles in UTM projection. Vertical accuracy is +/- 0.3m (95%) Horizontal accuracy is +/- 1m (95%) Vertical datum is Approximate Lowest Astronomical Tide. The source data used to create the depth model may be of a higher resolution/density than the model. This data can be supplied on request.

In collaboration between Korea Polar Research Institute and NIWA, an oceanographic mooring was deployed to the North of the Drygalski Ice Tongue (lat:-75.360767, lon:164.746467) on 9 February 2017 as a part of the ANA07C research cruise, and it was recovered on 5 March 2018. To monitor physical properties (Temperature, Salinity, Current) of ocean water in the north of the Drygalski Ice Tongue. GET DATA: https://kpdc.kopri.re.kr/search/c266365d-4846-4242-952b-75102a53110b