<div>The Abbot Point to Hydrographers Passage bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the RV Escape during the period 6 Oct 2020 – 16 Mar 2021. This was a contracted survey conducted for the Australian Hydrographic Office by iXblue Pty Ltd as part of the Hydroscheme Industry Partnership Program. The survey area encompases a section of Two-Way Route from Abbot Point through Hydrographers Passage QLD. Bathymetry data was acquired using a Kongsberg EM 2040, and processed using QPS QINSy. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The Torres Strait Under Keel Clearance Management Area bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Sea Ranger and SMB White Shark during the period 1 Dec 2021 – 24 Jan 2022. This was a contracted survey conducted for the Australian Hydrographic Office by EGS Survey Pty. Ltd. as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in Torres Strait, Queensland. Bathymetry data was acquired using a Kongsberg EM2040D and a Kongsberg EM 2040C, and processed using QPS Qimera processing software. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The Furneaux Group, Bass Strait&nbsp;bathymetry survey was acquired for the Australian Hydrographic Office (AHO) using Cessna 441 during the period 11 Apr 2022 – 20 Nov 2022. This was a contracted survey conducted for the Australian Hydrographic Office by Fugro Australia as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in Furneaux Group, Bass Strait. Bathymetry data was acquired using a LADS HD+ / LADS HD / RIEGL VQ-820-G, and processed using RIEGL RiProcess and CARIS HIPS and SIPS processing software. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The Hobart Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) on 10 Oct to 8 Nov 2021. This surface was created from a contracted national reference survey in Hobart TAS, collected for the purpose of calibrating multibeam echosounders.&nbsp;It was conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program, acquired using Kongsberg EM2040D, and processed using QPS Qimera. Separate grids in 0.5m and 1m resolutions are provided for the two surveyed sites within this survey area in MSL, LAT and Ellipsoid vertical datum. The dataset was then exported as 0.5m and 1m resolutions, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The Zeehan and Franklin Marine Parks, West Coast Tasmania&nbsp;Bathymetry Acquisition was acquired by CSIRO onboard the TV Bluefin between 22 Feb 2022 and 21 Mar 2022, using a Kongsberg EM2040C. This was a contracted survey conducted for the Institute for Marine and Antarctic Studies (IMAS), University of Tasmania, to conduct a multibeam survey encompasing the Zeehan and Franklin Marine Parks for Parks Australia. Bathymetry data was processed using QPS Qimera and Caris Hips & Sips processing software. The dataset was then exported as a 2m resolution, 32 bit floating point GeoTIFF grid of the survey area. A detailed report on the survey is provided in: Hydrographic Survey of Zeehan and Franklin Marine Parks, West Coast Tasmania (https://figshare.utas.edu.au/articles/report/Hydrographic_Survey_of_Zeehan_and_Franklin_Marine_Parks_West_Coast_Tasmania/23171318).</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The Great North East Channel (South-West), Torres Strait bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Sea Ranger and the SMB Independence during the period 26 Jan 2022 – 13 Apr 2022. This was a contracted survey conducted for the Australian Hydrographic Office by EGS Survey Pty. Ltd. as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in Torres Strait, Queensland. Bathymetry data was acquired using a Kongsberg EM2040C and a Kongsberg EM2040P, and processed using QPS Qimera processing software. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The North-East Beagle Gulf and Clarence Strait bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Offshore Guardian during the period 1 May 2021 – 13 Jul 2021. This was a contracted survey conducted for the Australian Hydrographic Office by Guardian Geomatics as part of the Hydroscheme Industry Partnership Program. The survey area encompases an area in North-East Beagle Gulf and Clarence Strait, Northern Territory. Bathymetry data was acquired using a Kongsberg EM2040 07 MK II, and processed using Caris Hips & Sips processing software. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The Lombadina Point Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) on 28 Nov 2022. This surface was created from a contracted national reference survey at Lombadia Point WA, collected for the purpose of calibrating multibeam echosounders.&nbsp;It was conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program, acquired using Kongsberg EM2040P MKII, and processed using QPS Qimera and Caris HIPS & SIPS. A grid in 0.5m resolution is provided for the surveyed site within this survey area in MSL, LAT and Ellipsoid vertical datum. The dataset was then exported as a 0.5m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div> Temporarily removed from External publication 9/01/2024 on request of N. Lennard.

<div>The Hay Point to Hydrographers Passage Bathymetry survey was acquired for the Australian Hydrographic Office (AHO) onboard the MV Sea Ranger and MV Brynda during the period 13 August- 09 November 2022. This is a contracted survey conducted for the Australian Hydrographic Office by EGS as part of the Hydroscheme Industry Partnership Program (HIPP). </div><div>The survey area encompases Hay Point to Hydrographers Passage in Queensland. Bathymetry data was acquired using a Kongsberg EM2040D and Kongsberg EM 2040C systems and processed using QPS Qimera processing software. The dataset was then exported as a 30m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>

<div>The Banks Strait Reference Surfaces bathymetry survey was acquired for the Australian Hydrographic Office (AHO) on 17 Dec 2021. This surface was created from a contracted national reference survey within Banks Strait to Cape Barren, TAS, collected for the purpose of calibrating multibeam echosounders.&nbsp;It was conducted for the Australian Hydrographic Office as part of the Hydroscheme Industry Partnership Program, acquired using Kongsberg EM 2040 MkII and Kongsberg EM 2040P, and processed using QPS Qimera. A grid in 0.5m resolution is provided for the surveyed site within this survey area in MSL, LAT and Ellipsoid vertical datum. The dataset was then exported as a 0.5m resolution, 32 bit floating point GeoTIFF grid of the survey area.</div><div>This dataset is not to be used for navigational purposes.</div>