This record describes multibeam echosounder data collected on RV Investigator voyage IN2025_V07, 'SOFS recovery voyage' which departed Hobart on the 1/7/2025 and returned to Hobart on the 6/7/2025, This voyage was staffed by only one GSM team member, thus 24 hours acquisition was not possible and there may be gaps in the data record. The EM124 provides a 1 degree by 1 degree angular resolution. The echosounder's nominal frequency is 12 kHz. Data are stored in *.kmall raw format for bathymetry and backscatter and *.kmwcd format for watercolumn backscatter at CSIRO. There are 53 files totalling 3.89 GB of raw data and 53 files totalling 9.61 GB of watercolumn data in this dataset. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.kmall format are corrected for motion and position. GPS tide was computed using the EGM2008 model and applied to the processed data. Processed data has had outliers removed. Additional information regarding this dataset, including further information on processing streams, is contained in the GSM data acquisition and processing report.

This record describes sub bottom profiler data collected on RV Investigator voyage IN2025_V07, 'SOFS recovery voyage' which departed Hobart on the 1/7/2025 and returned to Hobart on the 6/7/2025. This voyage was staffed by only one GSM team member, thus 24 hours acquisition was not possible and there may be gaps in the data record. The Kongsberg SBP29 (sub bottom profiler) was used to acquire data containing the specular reflections at different sediment interfaces below the seafloor. The SBP120 provides a 3° by 3° angular resolution. The echosounder's frequency sweep range is from 2.5 to 7 kHz. The SBP29 was logged sporadically for the extent of the voyage. Data are stored in *.raw (39 files 0.8 GB) raw and *.seg (39 files 0.7 GB) segy formats at CSIRO. The segy format data had a real time processing stream applied, which applies gain, a gain correction, matched filter with replica shaping, an attribute calculation for instantaneous amplitude and time variable gain. 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 multibeam echosounder data collected on RV Investigator voyage IN2025_V07, 'SOFS recovery voyage' which departed Hobart on the 1/7/2025 and returned to Hobart on the 6/7/2025. This voyage was staffed by only one GSM team member, thus 24 hours acquisition was not possible and there may be gaps in the data record. The Kongsberg EM712 multibeam echosounder was used to acquire seafloor bathymetry and backscatter information and watercolumn backscatter transiting between the Southern Ocean Time Series (SOTS) mooring site and South Tasman Rise. The EM712 provides a 0.5° by 1° transmit and receive angular resolution respectively. The echosounder's nominal frequency range is from 40 to 100 kHz. Data are stored in *.kmall raw format for bathymetry and backscatter and *.kmwcd format for watercolumn backscatter at CSIRO. There are 25 files totalling 4.16 GB of raw data and 25 files totalling 24.5 GB of watercolumn data in this dataset. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.kmall format are corrected for motion and position. GPS tide was computed using the EGM2008 model and applied to the processed data. Processed data has had outliers removed. Additional information regarding this dataset, including further information on processing streams, is contained in the GSM data acquisition and processing report.

This record describes multibeam echosounder data collected on IN2025_V07, 'SOFS recovery voyage' which departed Hobart on the 1/7/2025 and returned to Hobart on the 6/7/2025. This voyage was staffed by only one GSM team member, thus 24 hours acquisition was not possible and there may be gaps in the data record. The EM2040MK2 provides a 0.4 degree by 0.7 degree angular resolution. The echosounder's nominal frequency is 400 kHz (with a range of 200-700 kHz) and it operated in dual swath mode. Data are stored in *.kmall raw format for bathymetry and backscatter and *.kmwcd format for watercolumn backscatter at CSIRO. There are 22 files totalling 5.91 GB of raw data and 22 files totalling 66.0 GB of watercolumn data in this dataset. Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in *.kmall format are corrected for motion and position. GPS tide was computed using the EGM2008 model and applied to the processed data. Processed data has had outliers removed. Additional information regarding this dataset, including further information on processing streams, is contained in the GSM data acquisition and processing report.

This record describes SVP data collected on RV Investigator voyage IN2025_V07, which departed Hobart on 1/7/2025, and arrived Hobart 6/7/2025. A total of 1 SVP cast was 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 scientific split-beam echosounder data collected on the RV Investigator voyage IN2025_V07, 'SOFS recovery voyage' which departed Hobart on the 1/7/2025 and returned to Hobart on the 6/7/2025. This voyage was staffed by only one GSM team member, thus 24 hours acquisition was not possible and there may be gaps in the data record. The Simrad EK80 split beam echosounders for 18, 38, 70 120, 200 and (333) kHz were used to acquire acoustic backscatter data to a range of 1500 m, between the Southern Ocean Time Series (SOTS) mooring site and South Tasman Rise. All frequencies were logged sporadically for the extent of the voyage. The 333khz frequency was set to passive for the whole of the voyage. Data are stored in *.raw, *.bot and *.idx format at CSIRO. There are 70 files totalling 6.66 GB of raw data in this dataset. No processing has been conducted on this data. 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 XBT data collected on RV Investigator voyage on IN2025_V07, 'SOFS recovery voyage' which departed Hobart on the 1/7/2025 and returned to Hobart on the 6/7/2025. A total of 1 XBT cast was conducted over the duration of this voyage. Data are stored in netCDF 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.

This record describes the End of Voyage (EOV) data archive from the Marine National Facility (MNF) RV Investigator voyage IN2025_V07, titled "SOFS Recovery." The voyage took place between July 01, 2025 and July 06, 2025 (AEST), departing from Hobart and returning to Hobart. For further information please refer to the voyage documentation links. Instruments used and data collected include: Regular measurements: Acoustic Doppler Current Profiler (ADCP; 75, 150 KHz), Black Carbon sensor (Aethalometer), Cloud Condensation Nuclei counter (CCN), Disdrometer, Mobility particle size spectrometer (MPSS), Greenhouse Gas Analysers (Picarro), Radon sensor CTD, pCO2, Fisheries Echosounder (EK60, EK80), Multibeam Echosounder (EM712, EM124, EM2040), Sub-bottom Profiler (SBP29), Weather Radar, Expendable Bathythermographs (XBTs), Condensation Particle Counters (CPC), GPS Positioning System, Atmospheric Temperature, Humidity, Pressure, Wind and Rain sensors, Photosynthetically Active Radiation (PAR) sensor, Precision Infrared Radiometer (PIR), Precision Spectral Pyranometer (PSP), Ozone Sensor, Thermosalinographs (TSG), Fluorometer, Oxygen Optode, Doppler Velocity Log, Ultra Short BaseLine Underwater Positioning System (USBL), Starboard and Portside Radiometers. The archive for the IN2025_V07 EOV raw data is curated by the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC) in Hobart, with a permanent archive at the CSIRO Data Access Portal (https://data.csiro.au/), providing access to voyage participants and processors of the data collected on the voyage. All voyage documentation is available electronically to MNF support via the local network. Applications to access voyage documentation by non-CSIRO participants can be made via data-requests-hf@csiro.au All processed data from this voyage are made publicly available through the MNF Data Trawler (in the related links)