This record describes SVP data collected on RV Investigator voyage IN2019_E01, 'Post-Dry Dock Calibration Trials' which departed Singapore on the 19th July 2019 and returned to Cairns on the 2nd August 2019. A total of 1 SVP casts were conducted over the duration of this voyage. Data are stored in ASCII format files with extention *.txt at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes SVP data collected on IN2020_E01 (Trials and Calibration) which departed Hobart on the 29th July 2020 and returned to Hobart on the 6th August 2020. The purpose of this voyage was to undertake post port-period equipment calibrations and commissioning, sea trials and personnel training. A total of 7 SVP casts were conducted over the duration of this voyage using the Valeport rapidSV profiler. Data are stored in ASCII format files with extension *.txt at CSIRO. A total of 5 SVP casts were conducted over the duration of this voyage using the Valeport Midas SVX2 profiler. Data are stored in ASCII format files with extension *.000 at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes SVP data collected on IN2021_E01 (Trials and Calibration) which departed Hobart on the 10th November 2021 and returned to Hobart on the 14th November 2021. The purpose of this voyage was to undertake post port-period equipment calibrations and commissioning, sea trials and personnel training. A total of 3 SVP casts were conducted over the duration of this voyage using the Valeport rapidCTD profiler. Data are stored in ASCII format files with extension *.txt at CSIRO. A total of 3 SVP casts were conducted over the duration of this voyage using the Valeport Midas SVX2 profiler. Data are stored in ASCII format files with extension *.000 at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes SVP data collected on RV Investigator voyage IN2021_E02, to calibrate and commission new, upgraded and existing critical equipment (with sea trials and personnel training) onboard RV Investigator for upcoming voyages in the 2021 schedule and beyond. The primary objectives for this voyage were testing the Deep Corer winch stream and respool, Trawling winch calibration, CTD winch 1 & 2 calibrations, HOTS commissioning and Heave Compensation testing, and Deep Towed Camera trial and calibration. The voyage took place between November 20 and November 28, 2021, departing from Hobart (TAS) and returning to Hobart. A total of 44 SVP casts were conducted over the duration of this voyage. Data are stored in ASCII format files with extention *.000 at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes sound velocity profile data collected on the RV Investigator voyage IN2021_E04, to calibrate and commission new, upgraded and existing critical equipment (with sea trials and personnel training) onboard RV Investigator for upcoming voyages in the 2021 schedule and beyond. The primary objective for this voyage were testing Seismic Systems. The voyage departed Hobart PW04 on the 15/12/2021 and returned to Hobart PW04 on the 20/12/2021. A total of 12 SVP casts were conducted over the duration of this voyage. Data are stored in ASCII format files with extention *.000 at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes SVP data collected on RV Investigator voyage IN2022_V03, "SOTS: Southern Ocean Time Series automated moorings for climate and carbon cycle studies southwest of Tasmania", which departed Hobart on the 4th May 2022 and returned to Hobart on the 15th May 2022 (AEST). A total of 5 SVP casts were conducted over the duration of this voyage using the Valeport MIDAS SVX2 sound velocity profiler. This instrument was attached to the CTD frame and deployed with the selected CTD casts. Data are stored in ASCII format files with extention *.000 at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes sound velocity profile data collected on RV Investigator voyage IN2021_E03, to calibrate and commission new, upgraded and existing critical equipment (with sea trials and personnel training) onboard RV Investigator for upcoming voyages in the 2021 schedule and beyond. The primary objectives were testing the Giant Piston and Kasten Corer as well as the Deep Towed Camera. The voyage departed Hobart PW04 on the 30/11/2021 and returned to Hobart PW04 on the 08/12/2021. A total of 35 SVP casts were conducted over the duration of this voyage. Data are stored in ASCII format files with extention *.000 at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes SVP data collected on RV Investigator voyage IN2022_V05 "The Tsunamigenic Submarine Landslides and Deep-Marine Canyons of Australia’s Tasman Sea Margin: Causes and Consequences", which departed Hobart on 28th Mar 2022, and arrived in Brisbane on 3rd Jul 2022. A total of 174 SVP casts were conducted over the duration of this voyage. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes SVP data collected on RV Investigator voyage IN2022_V08, titled "Biodiversity Assessment of Australia’s Indian Ocean Territories", which departed Darwin on September 30 and returned to Fremantle on November 3, 2022. This was a continuation of voyage IN2021_v04. A total of 44 SVP casts were conducted over the duration of this voyage using the Valeport MIDAS SVX2 sound velocity profiler, with 5 casts considered as failed due to low battery issues (i.e. SVX2_009, 010, 023, 027 & 037). This instrument was attached to the CTD frame and deployed with the CTD casts, therefore SVP & CTD share common deployment cast numbers. Data are stored in ASCII format files with extention *.000 at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

This record describes SVP data collected on RV Investigator voyage IN2023_V02, titled "Gigantic submarine landslide offshore western Tasmania: risk mitigation for shelf derived tsunami in Australia", which departed Hobart on March 24 and returned to Hobart on April 30, 2023. A total of 17 SVP casts were conducted over the duration of this voyage using a combination of the Valeport MIDAS SVX2 sound velocity profiler (13 casts) and rapidCast SVP (4 casts). The Valeport MIDAS SVX2 was attached to the CTD frame and deployed with the CTD casts, therefore SVP & CTD share common deployment cast numbers. In addition to the SVP cast data, 164 SV profiles were derived from SST (sea surface temperature) data with climatology. Data are stored in ASCII format files at CSIRO. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.